CN106101408A - A kind of mobile terminal and method for regulation of sound volume thereof - Google Patents

Abstract

The present invention provides a mobile terminal and a volume adjustment method thereof. The mobile terminal includes an audio playback device, and the audio playback device is a receiver, an earphone or a loudspeaker. The volume adjustment method includes: collecting the audio from the input end and the output end of the audio playback device Audio signal; determine the impedance value of the audio playback device according to the voltage values corresponding to the audio signals at the input and output ends of the audio playback device; adjust the volume of the mobile terminal according to the impedance value of the audio playback device. In the present invention, by measuring the impedance value of the audio playback device, the environment in which the mobile terminal is located can be identified, thereby automatically adjusting the volume of the mobile terminal as required without manual adjustment by the user, thereby improving user experience.

Description

A mobile terminal and its volume adjustment method

technical field

The present invention relates to the technical field of terminals, in particular to a mobile terminal and a volume adjustment method thereof.

Background technique

When the mobile phone is talking, the audio can be played through three audio playback devices: receiver, earphone or loudspeaker (speaker). Wherein, the mobile phone is in the handheld mode when the receiver is used to play the audio, and the mobile phone is in the earphone mode when the earphone is used to play the audio. The phone is in external mode.

When talking in handheld mode, the volume is appropriate in a relatively quiet environment, but once you enter a noisy environment, such as public transportation places, crowded places, etc., it is difficult to hear the audio signal, and the user must manually increase the volume. When the user enters a quiet environment from a noisy environment, the volume is too loud, and the volume needs to be manually lowered. When using the headset mode to talk, when the headset is worn well, the volume is appropriate. When the headset is not worn well and the volume leaks, the audio signal may not be heard clearly. When using the speaker to talk, when the speaker is working normally, the volume is appropriate. When the speaker is blocked, the audio signal cannot be heard clearly.

When the above situation occurs, the user needs to manually adjust the volume of the mobile phone. In the current design of the mobile phone, the volume keys are all on the side, which is not very convenient to operate. The manual adjustment operation will inevitably affect the normal call, and the user experience is not good.

Contents of the invention

In view of this, the present invention provides a mobile terminal and a volume adjustment method thereof, which are used to solve the problem that it is difficult for existing mobile terminals to automatically adjust the volume according to changes in use conditions.

In order to solve the above technical problem, on the one hand, the present invention provides a volume adjustment method of a mobile terminal, the mobile terminal includes an audio playback device, and the audio playback device is a receiver, earphone or speaker, and the method includes:

collecting audio signals at the input and output ends of the audio playback device;

Determine the impedance value of the audio playback device according to the voltage values corresponding to the audio signals at the input end and the output end of the audio playback device;

Adjusting the volume of the mobile terminal according to the impedance value of the audio playback device.

On the other hand, the present invention also provides a mobile terminal, including an audio playback device, the audio playback device is a receiver, earphone or speaker, and also includes:

A collection module, configured to collect audio signals at the input and output ends of the audio playback device;

Impedance value measurement module, used to determine the impedance value of the audio playback device according to the voltage value corresponding to the audio signal at the input end and the output end of the audio playback device;

An adjustment module, configured to adjust the volume of the mobile terminal according to the impedance value of the audio playback device.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

By measuring the impedance value of the audio playback device, the environment in which the mobile terminal is located can be identified, thereby automatically adjusting the volume of the mobile terminal according to needs, without manual adjustment by the user, and improving user experience.

Description of drawings

1-3 are schematic diagrams of the handheld mode of the mobile terminal according to the embodiment of the present invention;

4-6 are schematic diagrams of the cavity between the receiver and the ear when the mobile terminal is in different handheld modes according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of a cavity test result of a receiver of a mobile terminal in a test experiment of the present invention;

Accompanying drawing 8 is a schematic diagram of the comparative relationship between the handheld mode and the volume of the mobile terminal in an embodiment of the present invention;

FIG. 9 is a schematic flowchart of a volume adjustment method of a mobile terminal according to Embodiment 1 of the present invention;

10 is a schematic diagram of a circuit structure for measuring the impedance value of an audio playback device according to an embodiment of the present invention;

11 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 2 of the present invention;

12 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 3 of the present invention;

13 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 4 of the present invention;

14 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 5 of the present invention;

FIG. 15 is a schematic structural diagram of a mobile terminal according to Embodiment 6 of the present invention;

FIG. 16 is a schematic structural diagram of a mobile terminal according to Embodiment 6 of the present invention.

detailed description

Before describing the mobile terminal and the method for adjusting the volume thereof according to the embodiments of the present invention, the principles adopted in the embodiments of the present invention will be briefly introduced first.

First of all, it should be noted that the impedance value of the audio playback device of the mobile terminal such as receiver, earphone and speaker is variable, and the impedance value will change according to the frequency and temperature of the input electrical signal.

Taking audio playing through a receiver as an example, the principle adopted in the embodiment of the present invention is briefly introduced.

When the receiver is used to play audio (for example, during a call), the mobile terminal is usually in the handheld mode, that is, the mobile terminal is used close to the user's earphone. Please refer to Figure 1-3. The hand-held modes can be divided into the following types: hand-held large-angle mode (Figure 1), hand-held small-angle mode (Figure 2) and clinging mode (Figure 3). Generally, during normal calls, the hand-held large-angle mode and the hand-held small-angle mode are mainly used. When the sound is particularly low, the user will use the close mode to make a call.

Of course, the handheld mode of the mobile terminal can also be divided into other methods, such as only including two modes, or more finely divided, including more than three modes. In the following embodiments, the above-mentioned three hand-held modes have been divided into examples for illustration.

Please refer to FIG. 4 , when the hand-held mode of the mobile terminal is the close-fitting mode, the mobile terminal and the ear are well sealed, and the front cavity of the receiver has a small space and is relatively sealed.

Please refer to FIG. 5 , when the hand-held mode of the mobile terminal is the hand-held small-angle mode, there is a slight leak between the mobile terminal and the ear, and the space in the front cavity of the receiver is small.

Please refer to FIG. 6 , when the hand-held mode of the mobile terminal is the hand-held small-angle mode, there is a large leakage between the mobile terminal and the ear, and the space in the front cavity of the receiver communicates with the outside world.

In order to compare the differences between the above three modes, the cavity test system was used to test the relationship between the resonant frequency point of the front cavity of the receiver and the impedance value of the receiver under the above three modes. According to the test results, it is known that under different modes, in In the same resonant frequency range, the impedance value of the receiver is different.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of the cavity test results of the receiver of the mobile terminal in a test experiment of the present invention. This experiment tested the resonance frequency point of the front cavity of the receiver and the receiver when the mobile terminal was in the hand-held large-angle mode and the close-fitting mode. In Fig. 7, the abscissa is the resonant frequency point of the receiver cavity, and the unit is HZ (Hertz), and the ordinate is the impedance value of the receiver, and the unit is Ohm (ohm). It can be seen from Figure 7 that within the same resonant frequency range, the impedance values of the receiver are different in different modes.

From the above experimental results, it can be seen that the impedance value of the receiver is related to the handheld mode of the mobile terminal. Therefore, the handheld mode of the mobile terminal can be determined by measuring the current impedance value of the receiver, so as to determine whether it needs to be adjusted. The volume of the mobile terminal, for example, when the user uses the handheld high-angle mode, it means that the user can hear the audio clearly. At this time, the normal volume (for example, 50% of the maximum volume) can be used; when the user uses the handheld small-angle mode, it means that the audio It is not very clear. At this time, you can increase the volume of the mobile terminal (for example, adjust the volume to 75% of the maximum volume). Volume (e.g. set the volume to maximum volume). Please refer to FIG. 8 . FIG. 8 shows a contrastive relationship between the handheld mode of the mobile terminal and the volume according to an embodiment of the present invention.

In specific use, the user can switch the handheld mode according to the actual situation, and the mobile terminal only needs to measure the impedance value of the receiver to identify the corresponding handheld mode of the mobile terminal, and then switch the volume.

The above principle of adjusting the volume is also applicable to the earphone mode. When the earphone is worn well, the earphone and the ear chamber are relatively sealed. When the earphone is worn and the volume leaks, the seal between the earphone and the ear chamber is no longer. The impedance value of the earphone will change. By measuring the impedance value of the earphone, it can be identified whether the earphone is worn well, so as to switch the volume.

The above principle of adjusting the volume is also applicable to the loudspeaker mode. When the speaker is working normally, the speaker chamber is connected to the outside world. When the speaker chamber is blocked, the impedance value of the speaker will change at this time. By measuring the impedance of the speaker Value, to identify whether the speaker is blocked, so as to switch the volume.

The following specific embodiments of the present invention are obtained based on the above principles.

The specific implementation manner of the present invention will be further described in detail below with reference to the drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

Please refer to FIG. 9. FIG. 9 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 1 of the present invention. The mobile terminal includes an audio playback device, and the audio playback device is a receiver, earphone or speaker. The volume adjustment method includes:

Step S101: collecting audio signals at the input and output ends of the audio playback device;

Step S102: Determine the impedance value of the audio playback device according to the voltage values corresponding to the audio signals at the input end and the output end of the audio playback device;

Step S103: Adjust the volume of the mobile terminal according to the impedance value of the audio playback device.

In the embodiment of the present invention, by measuring the impedance value of the audio playback device, the environment in which the mobile terminal is located can be identified, so that the volume of the mobile terminal can be automatically adjusted as required without manual adjustment by the user, which improves user experience.

In a preferred embodiment of the present invention, the step of determining the impedance value of the audio playback device may include:

Step S1021: Filter out audio signals within a preset frequency range from the collected audio signals at the input and output ends of the audio playback device; for example, filter out 400HZ audio signals;

Step S1022: Obtain the voltage value corresponding to the audio signal within the preset frequency range;

Step S1023: Calculate the impedance value of the audio playback device according to the voltage value.

That is to say, when collecting the audio signals at the input and output ends of the audio playback device, instead of processing the audio signals at all frequencies, only the voltage values of the audio signals within a predetermined frequency range are obtained, so as to facilitate comparison.

Please refer to FIG. 10. FIG. 10 is a schematic diagram of a circuit structure for measuring the impedance value of an audio playback device according to an embodiment of the present invention. The circuit structure includes an impedance value measurement module, a bandpass filter, a resistor, and an audio playback device, wherein, The impedance measurement module includes two pins GPIO1 and GPIO2, which are respectively connected to the input end and the output end of the audio playback device, and the audio playback device is connected in series with the resistor. Filter the audio signal at the input and output ends of the audio playback device through a band-pass filter to obtain an audio signal within a preset frequency range (for example, 350-450HZ), and the impedance value measurement module obtains the band-pass filter through GPIO1 and GPIO2 after filtering The audio signal at the input end and the output end of the audio playback device is converted into a voltage value by digital-to-analog conversion, and the impedance value of the audio playback device is calculated according to the obtained voltage value.

The impedance value measurement module can calculate the impedance value of the audio playback device according to the following formula:

$\mathrm{<span\; class="notranslate">\; R</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; V</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; /</span>\sqrt{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; /</span><span\; class="notranslate">\; \&lsqb;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; V</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; V</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; r</span>}<span\; class="notranslate">\; \&rsqb;</span><span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; r</span>}$

Wherein, R is the impedance value of the audio playback device, V1 is the voltage value of one end of the audio playback device (the voltage value obtained by GPIO1), and V2 is the voltage value of the other end of the audio playback device (the voltage value obtained by GPIO2 ), r is the resistance value of the resistor connected in series with the audio playback device.

The following describes in detail the corresponding volume adjustment methods when the audio playback devices are receivers, earphones, and speakers.

Please refer to FIG. 11. FIG. 11 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 2 of the present invention. In this embodiment, the audio playback device is a receiver. The volume adjustment method includes:

Step S201: collecting audio signals at the input and output ends of the receiver;

Step S202: Determine the impedance value of the receiver according to the voltage values corresponding to the audio signals at the input terminal and the output terminal of the receiver;

Step S203: Determine the handheld mode of the mobile terminal according to the impedance value of the receiver, and the handheld mode of the mobile terminal is used to represent the distance between the mobile terminal and the user;

Step S204: Adjust the volume of the mobile terminal according to the handheld mode of the mobile terminal. Wherein, the handheld mode of the mobile terminal indicates that the greater the distance between the mobile terminal and the user, the lower the volume that the mobile terminal needs to adjust to, and the handheld mode of the mobile terminal indicates that the The smaller the distance between the mobile terminal and the user, the greater the volume to which the mobile terminal needs to adjust.

In the embodiment of the present invention, when the receiver is used to play audio, the handheld mode of the mobile terminal can be obtained by measuring the impedance value of the receiver, and the volume of the mobile terminal can be automatically adjusted according to the handheld mode of the mobile terminal. The actual situation switches the handheld mode, and the mobile terminal only needs to measure the impedance value of the receiver, identify the corresponding mode, and then switch the volume. The implementation method is simple, and the volume can be switched according to different environments, which improves the user experience. .

Please refer to FIG. 12. FIG. 12 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 3 of the present invention. In this embodiment, the audio playback device is a receiver. The volume adjustment method includes:

Step S301: collecting audio signals at the input and output ends of the receiver;

Step S302: Determine the impedance value of the receiver according to the voltage values corresponding to the audio signals at the input end and the output end of the receiver;

Step S303: When the impedance value of the receiver is greater than the first resistance value, it is determined that the mobile terminal is in the handheld large-angle mode, and the current volume remains unchanged;

Step S304: When the impedance value of the receiver is between the first resistance value and the second resistance value, it is determined that the mobile terminal is in the hand-held small angle mode, and the current volume is increased to the first volume;

Step S305: When the impedance value of the receiver is less than the second resistance value, it is determined that the mobile terminal is in the sticking mode, and the current volume is increased to a second volume, the second volume is greater than the first volume, and the second volume is greater than the first volume. The first resistance value is greater than the second resistance value.

In the embodiment of the present invention, the handheld mode of the mobile terminal is divided into three modes, and the handheld mode of the mobile terminal is determined according to different impedance value ranges of the measured receiver, thereby adjusting the volume of the mobile terminal. For example, when the user adopts the handheld large-angle mode, it means that the current volume is sufficient to meet the requirements of hearing clearly, so there is no need to adjust the volume; when the user enters a noisy environment from a quiet environment, the current volume may not meet the requirements of hearing clearly, so the user can Switch the mobile terminal to the hand-held small-angle mode or close-fitting mode. At this time, by measuring the change of the impedance value of the receiver, the volume of the mobile terminal can be increased so that the volume can meet the user's requirements.

In the above embodiments, receivers with different structures may have different corresponding impedance values at the same handheld mode and cavity resonance frequency point. Therefore, it is necessary to test the handheld large-angle mode, handheld small-angle mode and close-fitting mode in advance. For the corresponding impedance value, the corresponding relationship is pre-stored in the mobile terminal, and then the subsequent mode judgment is performed. Alternatively, software presets can be used to allow users to use the three modes and the system will automatically measure the corresponding relationship and store it.

Please refer to FIG. 13. FIG. 13 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 4 of the present invention. In this embodiment, the audio playback device is an earphone. The volume adjustment method includes:

Step S401: collecting the audio signals of the earphone input terminal and output terminal;

Step S402: Determine the impedance value of the earphone according to the voltage values corresponding to the audio signals at the input end and the output end of the earphone;

Step S403: According to the impedance value of the earphone, determine whether the volume of the earphone leaks;

Specifically, the impedance value of the earphone can be compared with a predetermined value. When the impedance value of the earphone is less than the predetermined value, it is determined that the earphone has no leakage. When the impedance value of the earphone is not less than the predetermined value, it is determined that the earphone has leaked.

Step S404: When the volume of the earphone leaks, increase the volume of the mobile terminal.

Step S405: When the volume of the earphone does not leak, keep the volume of the mobile terminal unchanged.

In the embodiment of the present invention, when the earphone is used to play audio, by measuring the impedance value of the earphone, it can be obtained whether the volume of the earphone leaks, that is, whether the earphone is worn well, and when the volume of the earphone leaks, the volume of the mobile terminal is automatically increased , to meet the needs of users.

In another embodiment of the present invention, when it is determined that the volume of the earphones is leaking and the volume of the mobile terminal is increased, the audio signals at the input and output ends of the earphones may continue to be collected. The voltage value corresponding to the audio signal at the output end determines the impedance value of the earphone, and determines whether the volume of the earphone leaks according to the impedance value of the earphone; when the volume of the earphone still leaks, keep increasing The volume of the mobile terminal remains unchanged. When the volume of the earphone no longer leaks, the volume of the mobile terminal is decreased.

In the embodiment of the present invention, by measuring the impedance value of the earphone, it can be obtained whether the volume of the earphone leaks, that is, whether the earphone is worn well. When the volume of the earphone leaks, the volume of the mobile terminal is automatically increased. When the volume no longer leaks, it means that the user has put on the earphone well again, and the volume of the mobile terminal can be automatically reduced to improve user experience.

Please refer to FIG. 14. FIG. 14 is a schematic flowchart of a volume adjustment method for a mobile terminal according to Embodiment 5 of the present invention. In this embodiment, the audio playback device is a speaker. The volume adjustment method includes:

Step S501: collecting audio signals at the input end and the output end of the loudspeaker;

Step S502: Determine the impedance value of the speaker according to the voltage values corresponding to the audio signals at the input end and the output end of the speaker;

Step S503: According to the impedance value of the speaker, determine whether the speaker is blocked;

Specifically, the impedance value of the speaker can be compared with a predetermined value. When the impedance value of the speaker is less than the predetermined value, it is determined that the speaker is blocked. When the impedance value of the speaker is not less than the predetermined value, it is determined that the earphone is not blocked.

Step S504: When the speaker is blocked, increase the volume of the mobile terminal.

Step S506: When the speaker is not blocked, keep the volume of the mobile terminal unchanged.

In the embodiment of the present invention, when the speaker is used to play audio, by measuring the impedance value of the speaker, it can be obtained whether the speaker is blocked, and when the speaker is blocked, the volume of the mobile terminal is automatically increased to meet the user's needs.

In another embodiment of the present invention, when it is judged that the speaker is blocked and the volume of the mobile terminal is increased, the audio signals at the input and output ends of the speaker may be continuously collected. The voltage value corresponding to the audio signal at the output end determines the impedance value of the speaker, and judges whether the speaker is blocked according to the impedance value of the speaker. When the speaker is still blocked, keep the increased The volume of the mobile terminal remains unchanged, and when the speaker is no longer blocked, the volume of the mobile terminal is decreased.

In the embodiment of the present invention, by measuring the impedance value of the speaker, it can be obtained whether the speaker is blocked. When the speaker is blocked, the volume of the mobile terminal will be automatically increased. When it is detected that the speaker is no longer blocked, it will be automatically Reduce the volume of the mobile terminal to improve user experience.

In another embodiment of the present invention, when it is determined that the speaker is blocked, a prompt may also be given to the user, so that the user can perform corresponding processing, which further improves user experience.

Preferably, the user may be prompted by turning on the flash light of the camera of the mobile terminal.

In the above-mentioned embodiments, the mobile terminal can be a mobile phone, or other electronic equipment capable of playing audio signals. When the mobile terminal is a mobile phone, the above-mentioned volume adjustment method can be applied to a mobile phone call, or to instant messaging software. When communicating, for example, when chatting via WeChat.

When the above volume adjustment method is applied to a mobile phone call, after the call is established, a default volume can be automatically set first, and then the volume can be adjusted according to the measured impedance value of the audio playback device. Of course, the default volume can also not be used. Instead, the last adjusted volume of the mobile terminal is used as the initial volume.

Please refer to FIG. 15. FIG. 15 is a schematic structural diagram of a mobile terminal according to Embodiment 6 of the present invention. The mobile terminal includes an audio playback device, and the audio playback device is a receiver, earphone or speaker, and further includes:

A collection module, configured to collect audio signals at the input and output ends of the audio playback device;

Impedance value measurement module, used to determine the impedance value of the audio playback device according to the voltage value corresponding to the audio signal at the input end and the output end of the audio playback device;

An adjustment module, configured to adjust the volume of the mobile terminal according to the impedance value of the audio playback device.

In the embodiment of the present invention, by measuring the impedance value of the audio playback device used to play the audio signal, the state of the mobile terminal can be obtained, so that the volume of the mobile terminal can be automatically adjusted according to the state of the mobile terminal, without the need for the user to Manual volume adjustment improves user experience.

In a preferred embodiment of the present invention, the impedance measurement module includes:

A band-pass filter, configured to filter out audio signals within a preset frequency range from the collected audio signals at the input and output ends of the audio playback device;

a voltage value acquisition unit, configured to acquire a voltage value corresponding to an audio signal within the preset frequency range;

The calculation unit is used to calculate the impedance value of the audio playback device according to the voltage value.

Specifically, the calculation unit calculates the impedance value of the audio playback device according to the following formula:

$\mathrm{<span\; class="notranslate">\; R</span>}<span\; class="notranslate">\; =</span>\mathrm{<span\; class="notranslate">\; V</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; /</span>\sqrt{\mathrm{<span\; class="notranslate">\; 2</span>}}<span\; class="notranslate">\; /</span><span\; class="notranslate">\; \&lsqb;</span><span\; class="notranslate">\; (</span>\mathrm{<span\; class="notranslate">\; V</span>}\mathrm{<span\; class="notranslate">\; 1</span>}<span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; V</span>}\mathrm{<span\; class="notranslate">\; 2</span>}<span\; class="notranslate">\; )</span><span\; class="notranslate">\; /</span>\mathrm{<span\; class="notranslate">\; r</span>}<span\; class="notranslate">\; \&rsqb;</span><span\; class="notranslate">\; -</span>\mathrm{<span\; class="notranslate">\; r</span>}$

Wherein, R is the impedance value of described audio playback device, V1 is the voltage value of one end of described audio playback device, V2 is the voltage value of the other end of described audio playback device, r is the resistance of the resistance connected in series with described audio playback device resistance.

When the audio playback device is a receiver, the adjustment module includes:

The first adjustment unit is configured to determine the handheld mode of the mobile terminal according to the impedance value of the receiver, adjust the volume of the mobile terminal according to the handheld mode of the mobile terminal, and the mobile terminal is in the handheld mode. The handheld mode at is used to represent the distance between the mobile terminal and the user.

In a preferred embodiment of the present invention, the hand-held modes include: hand-held large-angle mode, hand-held small-angle mode and clinging mode,

The first adjustment unit is specifically used to determine that the mobile terminal is in the handheld large-angle mode when the impedance value of the receiver is greater than the first resistance value, and keep the current volume unchanged; when the impedance value of the receiver is at the first resistance value When the resistance value is between the first resistance value and the second resistance value, it is determined that the mobile terminal is in the hand-held small angle mode, and the current volume is increased to the first volume; when the impedance value of the receiver is less than the second resistance value, it is determined that the The mobile terminal is in the sticking mode, and the current volume is increased to a second volume, the second volume is greater than the first volume, and the first resistance value is greater than the second resistance value.

When the audio playback device is an earphone, the adjustment module includes:

a volume leakage determining unit, configured to determine whether the volume of the earphone leaks according to the impedance value of the earphone;

The second adjusting unit is configured to increase the volume of the mobile terminal when the volume of the earphone leaks.

Preferably, the adjustment module also includes:

The first control unit is used to control the collection module to continue to collect the audio signals of the earphone input end and output end, and control the impedance value measurement module to determine according to the voltage value corresponding to the audio signal of the earphone input end and output end the impedance value of the earphone; and controlling the volume leakage determination unit to determine whether the volume of the earphone leaks according to the impedance value of the earphone;

The third adjustment unit is configured to reduce the volume of the mobile terminal when the volume of the earphone no longer leaks.

When the audio playback device that plays the audio signal is a loudspeaker, the adjustment module includes:

a judging unit, configured to judge whether the speaker is blocked according to the impedance value of the speaker;

The fourth adjustment unit is configured to increase the volume of the mobile terminal when the speaker is blocked.

Preferably, the adjustment module also includes:

The second control unit is used to control the collection module to continue to collect the audio signals at the input end and the output end of the speaker, and control the impedance measurement module to determine according to the voltage values corresponding to the audio signals at the input end and the output end of the speaker the impedance value of the speaker; and controlling the judging unit to determine whether the volume of the speaker leaks according to the impedance value of the speaker;

The fifth adjustment unit is configured to reduce the volume of the mobile terminal when the speaker is no longer blocked.

Preferably, the mobile terminal further includes:

The prompting module is used for prompting the user when the speaker is blocked.

Preferably, the prompting module is used to prompt the user by turning on the flash light of the camera of the mobile terminal when the speaker is blocked.

Please refer to FIG. 16. FIG. 16 is a schematic structural diagram of a mobile terminal according to Embodiment 7 of the present invention. The mobile terminal includes: a CPU (central processing unit), a CODEC (codec) platform, and an ADC (digital-to-analog converter) sampling module and a receiver, wherein the CPU controls the platform CODEC platform to output audio signals to the receiver, and the receiver plays the audio normally. And, ADC sampling module is used for collecting the audio signal of described receiver input end and output end, and sends to CPU after carrying out digital-to-analog conversion, by CPU according to the voltage value corresponding to the audio signal of described audio playback device input end and output end, determine The impedance value of the audio playback device is used to adjust the volume of the mobile terminal according to the impedance value of the audio playback device. Specifically, the CPU controls the output volume gain of the platform CODEC platform.

In the embodiment of the present invention, the ADC sampling module performs the functions performed by the CPU in the above embodiments, and the CPU performs the functions performed by the impedance measurement module and the adjustment module in the above embodiments.

Wherein, when the CODEC platform comes with an ADC module, the above-mentioned ADC sampling module can be realized by using the ADC module that comes with the CODEC platform, so as not to increase the hardware cost. Of course, it can also be implemented by adding an independent ADC module.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (22)

1. a method for regulation of sound volume for mobile terminal, described mobile terminal includes audio player part, described audio player Part is receiver, earphone or speaker, it is characterised in that described method includes:

Gather described audio player part input and the audio signal of outfan；

According to the magnitude of voltage that described audio player part input is corresponding with the audio signal of outfan, determine that described audio frequency is play The resistance value of device；

According to the resistance value of described audio player part, adjust the volume of described mobile terminal.

The method for regulation of sound volume of mobile terminal the most according to claim 1, it is characterised in that described broadcast according to described audio frequency Put the magnitude of voltage that device input is corresponding with the audio signal of outfan, determine the step of the resistance value of described audio player part Including:

From the audio signal of described collection, filter out the audio signal in the range of predeterminated frequency；

Obtain the magnitude of voltage that the audio signal in the range of described predeterminated frequency is corresponding；

According to described magnitude of voltage, calculate the resistance value of described audio player part.

The method for regulation of sound volume of mobile terminal the most according to claim 2, it is characterised in that calculate institute according to equation below State the resistance value of audio player part:

$R=V1/\sqrt{2}/\&lsqb;(V1-V2)/r\&rsqb;-r$

Wherein, R is the resistance value of described audio player part, and V1 is the magnitude of voltage of described audio player part one end, and V2 is institute Stating the magnitude of voltage of the audio player part other end, r is the resistance value of the resistance connected with described audio player part.

The method for regulation of sound volume of mobile terminal the most according to claim 1, it is characterised in that when described audio player part During for receiver, the described resistance value according to described audio player part, the step of the volume adjusting described mobile terminal includes:

According to the resistance value of described receiver, determine the hand-held mode residing for described mobile terminal, residing for described mobile terminal Hand-held mode is for characterizing the distance between described mobile terminal and user；

According to the hand-held mode residing for described mobile terminal, adjust the volume of described mobile terminal.

The method for regulation of sound volume of mobile terminal the most according to claim 4, it is characterised in that described hand-held mode includes: Hand-held wide-angle pattern, hand-held low-angle pattern and be close to pattern；The described resistance value according to described audio player part, adjusts The step of the volume of described mobile terminal includes:

When the resistance value of described receiver is more than the first resistance value, it is determined that described mobile terminal is in hand-held wide-angle pattern, The volume keeping current is constant；

When the resistance value of described receiver is between the first resistance value and the second resistance value, it is determined that described mobile terminal is in Hand-held low-angle pattern, increases to the first volume by current volume；

When the resistance value of described receiver is less than the second resistance value, it is determined that described mobile terminal is in is close to pattern, will be current Volume increase to the second volume, described second volume be more than the first volume, described first resistance value be more than the second resistance value.

The method for regulation of sound volume of mobile terminal the most according to claim 1, it is characterised in that when described audio player part During for earphone, the described resistance value according to described audio player part, the step of the volume adjusting described mobile terminal includes:

According to the resistance value of described earphone, determine whether the volume of described earphone produces leakage；

When the volume of described earphone produces and reveals, increase the volume of described mobile terminal.

The method for regulation of sound volume of mobile terminal the most according to claim 6, it is characterised in that described increase is described mobile whole After the step of the volume of end, also include:

Continue to gather described earphone input and the audio signal of outfan；

According to the magnitude of voltage that described earphone input is corresponding with the audio signal of outfan, determine the resistance value of described earphone；

According to the resistance value of described earphone, determine whether the volume of described earphone produces leakage；

When the volume of described earphone is no longer revealed, reduce the volume of described mobile terminal.

The method for regulation of sound volume of mobile terminal the most according to claim 1, it is characterised in that when the sound of playing audio signal When frequency broadcasting device is speaker, the described resistance value according to described audio player part, adjust the volume of described mobile terminal Step include:

Resistance value according to described speaker, it is judged that whether described speaker is plugged；

When described speaker is plugged, increase the volume of described mobile terminal.

The method for regulation of sound volume of mobile terminal the most according to claim 8, it is characterised in that described increase is described mobile whole After the step of the volume of end, also include:

Continue to gather described loudspeaker input terminal and the audio signal of outfan；

According to the magnitude of voltage that described loudspeaker input terminal is corresponding with the audio signal of outfan, determine the impedance of described speaker Value；

Resistance value according to described speaker, it is judged that whether described speaker is plugged；

When described speaker is no longer plugged, reduce the volume of described mobile terminal.

The method for regulation of sound volume of mobile terminal the most according to claim 8, it is characterised in that also include:

When described speaker is plugged, user is pointed out.

The method for regulation of sound volume of 11. mobile terminals according to claim 10, it is characterised in that when described speaker is blocked When living, user is pointed out by the flash lamp opening described mobile terminal camera.

12. 1 kinds of mobile terminals, including audio player part, described audio player part is receiver, earphone or speaker, its It is characterised by, also includes:

Acquisition module, for gathering described audio player part input and the audio signal of outfan；

Impedance value measurement module, for the voltage corresponding with the audio signal of outfan according to described audio player part input Value, determines the resistance value of described audio player part；

Adjusting module, for the resistance value according to described audio player part, adjusts the volume of described mobile terminal.

13. mobile terminals according to claim 12, it is characterised in that described impedance value measurement module includes:

Band filter, for the audio signal from the described audio player part input gathered and outfan, filters out Audio signal in the range of predeterminated frequency；

Magnitude of voltage acquiring unit, for obtaining the magnitude of voltage that the audio signal in the range of described predeterminated frequency is corresponding；

Computing unit, for according to described magnitude of voltage, calculates the resistance value of described audio player part.

14. mobile terminals according to claim 13, it is characterised in that described computing unit calculates institute according to equation below State the resistance value of audio player part:

$R=V1/\sqrt{2}/\&lsqb;(V1-V2)/r\&rsqb;-r$

Wherein, R is the resistance value of described audio player part, and V1 is the magnitude of voltage of described audio player part one end, and V2 is institute Stating the magnitude of voltage of the audio player part other end, r is the resistance value of the resistance connected with described audio player part.

15. mobile terminals according to claim 12, it is characterised in that when described audio player part is receiver, Described adjusting module includes:

First adjustment unit, for the resistance value according to described receiver, determines the hand-held mode residing for described mobile terminal, root According to the hand-held mode residing for described mobile terminal, adjust the volume of described mobile terminal, the hand-held mould residing for described mobile terminal Formula is for characterizing the distance between described mobile terminal and user.

16. mobile terminals according to claim 15, it is characterised in that described hand-held mode includes: hand-held wide-angle mould Formula, hand-held low-angle pattern and be close to pattern,

Described first adjustment unit is specifically for when the resistance value of described receiver is more than the first resistance value, it is determined that described movement Terminal is in hand-held wide-angle pattern, and the volume keeping current is constant；When the resistance value of described receiver is positioned at the first resistance value And second between resistance value time, it is determined that described mobile terminal is in hand-held low-angle pattern, and current volume is increased to first Volume；When the resistance value of described receiver is less than the second resistance value, it is determined that described mobile terminal is in is close to pattern, will be current Volume increase to the second volume, described second volume be more than the first volume, described first resistance value be more than the second resistance value.

17. mobile terminals according to claim 12, it is characterised in that when described audio player part is earphone, institute State adjusting module to include:

Volume is revealed and is determined unit, for the resistance value according to described earphone, determines whether the volume of described earphone produces leakage；

Second adjustment unit, for when the volume of described earphone produces and reveals, increasing the volume of described mobile terminal.

18. mobile terminals according to claim 17, it is characterised in that described adjusting module also includes:

First control unit, continues to gather the audio frequency letter of described earphone input and outfan for controlling described acquisition module Number, and control described impedance value measurement module according to the described earphone input voltage corresponding with the audio signal of outfan Value, determines the resistance value of described earphone；And control described volume reveal determine the unit resistance value according to described earphone, determine Whether the volume of described earphone produces leakage；

3rd adjustment unit, when the volume of described earphone is no longer revealed, reduces the volume of described mobile terminal.

19. mobile terminals according to claim 12, it is characterised in that when the audio player part of playing audio signal is During speaker, described adjusting module includes:

Judging unit, for the resistance value according to described speaker, it is judged that whether described speaker is plugged；

4th adjustment unit, for when described speaker is plugged, increases the volume of described mobile terminal.

20. mobile terminals according to claim 19, it is characterised in that described adjusting module also includes:

Second control unit, continues to gather the audio frequency letter of described loudspeaker input terminal and outfan for controlling described acquisition module Number, and control described impedance value measurement module according to the described loudspeaker input terminal voltage corresponding with the audio signal of outfan Value, determines the resistance value of described speaker；And control the described judging unit resistance value according to described speaker, determine described Whether the volume of speaker produces leakage；

5th adjustment unit, for when described speaker is no longer plugged, reduces the volume of described mobile terminal.

21. mobile terminals according to claim 19, it is characterised in that also include:

Reminding module, for when described speaker is plugged, points out user.

The method for regulation of sound volume of 22. mobile terminals according to claim 21, it is characterised in that described reminding module is used for When described speaker is plugged, user is pointed out by the flash lamp opening described mobile terminal camera.