CN108810745A - It utters long and high-pitched sounds test method, utter long and high-pitched sounds test system and relevant apparatus - Google Patents

Abstract

It utters long and high-pitched sounds test method, utter long and high-pitched sounds test system and device the present invention relates to one kind, this method includes：Specific sound is played to the pickup channel of test product, the same same frequency of the first voice signal of the specific sound and the audio output of the test product；The second sound signal of the audio output of test product is obtained, which is the sound exported after first voice signal is superimposed by the test product with the specific sound；If the amplitude of the second sound signal obtained is more than predetermined threshold, judges that test product produces and utter long and high-pitched sounds.The present invention can more delicately detect the problem of uttering long and high-pitched sounds of bluetooth headset.

Description

Howling test method, howling test system and related devices

【Technical field】

The invention relates to the field of communication technology, in particular to a howling test method, a howling test system and related devices.

【Background technique】

With the popularization of smart handheld devices, especially since the mobile phone has Bluetooth as a standard configuration, Bluetooth headsets are becoming more and more popular, especially Bluetooth headsets for sports scenes are becoming more and more popular among consumers.

Because in the outdoor sports scene, when wearing a Bluetooth headset to listen to music, the voices of the people around you are blocked from the headset, which affects the normal communication between people. Some extreme situations, such as traffic accidents or dangerous situations, may even cause harm to the Bluetooth headset user. Therefore, a channel through which ambient sound is transmitted to the ear is required, that is, an ambient awareness function is required. The ambient awareness function is currently commonly used technology. After the microphone channel of the Bluetooth headset picks up the sound of the outside world, the sound is processed by the built-in digital signal processor (DSP, Digital Signal Processing) of the Bluetooth headset, and finally amplified from the Bluetooth headset. The horn plays.

However, due to structural design or production process control issues, the microphone channel of the Bluetooth headset will pick up the music played from the speaker of the Bluetooth headset. It is picked up and amplified and played back, forming positive feedback, causing the sound picked up by the microphone channel from the speaker to become louder and louder, resulting in a "howling sound", which seriously affects the user experience.

【Content of invention】

The technical problem to be solved by the present invention is to provide a howling test method, a howling test system and related devices, which can more sensitively detect the howling problem of the Bluetooth headset.

In order to solve the above technical problems, the present invention provides the following technical solutions:

On the one hand, the present invention provides a howling test method, comprising: playing a specific sound to the sound pickup channel of the product under test, the specific sound having the same frequency as the first sound signal of the audio output of the product under test; The second sound signal of the audio output of the product under test, the second sound signal is the sound output by the product under test after superimposing the first sound signal and the specific sound; if the amplitude of the acquired second sound signal exceeds a predetermined threshold, Then it is determined that the product under test produces howling.

In some embodiments, before playing the specific sound to the pickup channel of the product under test, it includes: obtaining the first sound signal of the audio output of the product under test; playing the specific sound to the pickup channel of the product under test specifically includes: The acquired first sound signal is converted into sound and played to the sound pickup channel of the product under test.

In some embodiments, before converting the acquired first sound signal into sound and playing it to the sound pickup channel of the product under test, it further includes: amplifying the acquired first sound signal by a preset multiple.

In some embodiments, amplifying the acquired first sound signal by a preset multiple specifically includes: amplifying the acquired first sound signal by a preset multiple, so that the amplified sound signal is consistent with the audio output of the product under test The amplitude of the first sound signal is the same.

In some embodiments, the specific sound is pink noise.

On the other hand, the present invention also provides a howling test system, including: a playback device, used to play a specific sound to the sound pickup channel of the product under test, the specific sound is the same as the first sound of the audio output of the product under test The signal is of the same frequency; the pick-up mouth is used to obtain the second sound signal of the audio output of the product under test after the playback device plays; the howling detector is used to detect the amplitude of the second sound signal acquired by the pick-up mouth, If the amplitude exceeds the predetermined threshold, it is determined that the product under test produces howling.

In some embodiments, the pickup mouth is also used to obtain the first sound signal of the audio output of the product under test before the playback device plays the specific sound to the sound pickup channel of the product under test; the playback device includes a loudspeaker for The first sound signal acquired by the pickup mouth is converted into sound and played to the sound pickup channel of the product under test.

In some embodiments, the system also includes: an amplifier, used for converting the first sound signal obtained by the speaker into sound and playing it to the sound pickup channel of the product under test, and multiplying the first sound signal by a preset multiple. enlarge.

In some embodiments, the amplifier is used to amplify the first sound signal by a preset multiple, so that the amplitude of the amplified sound signal is the same as that of the audio output of the product under test.

In some embodiments, the system further includes a first airtight box, the playback device is arranged in the box, and the sound pickup channel side of the product under test is embedded in the box.

In some embodiments, the system further includes a second airtight box, the pick-up nozzle is arranged in the box, and the speaker side of the product under test is embedded in the box.

On the other hand, the present invention also provides a howling test device, including: a playback device, used to play a specific sound to the sound pickup channel of the product under test, the specific sound is the same as the first sound of the audio output of the product under test The signals are of the same frequency; the pick-up nozzle is used to obtain the second sound signal of the audio output of the product under test after the playback device plays it, and output the second sound signal to the howling detector.

Compared with prior art, the beneficial effect of the embodiment of the present invention is:

In this embodiment, by playing a specific sound to the sound pickup channel of the product under test, since the specific sound is at the same frequency as the first sound signal output by the audio output of the product under test, the sound pickup channel of the product under test will pick up this sound signal. After the two are superimposed, the sound signal with a larger amplitude is obtained, thereby amplifying the leakage problem of the product under test. By detecting whether the amplitude of the second sound signal of the audio output of the product under test exceeds a predetermined threshold, and the second sound signal of the audio output of the product under test includes the sound signal picked up by the sound pickup channel, due to the amplitude of the picked up sound signal It has become larger, so it can detect the howling problem caused by the leakage of the Bluetooth headset more sensitively and accurately.

【Description of drawings】

Fig. 1 is a structural schematic diagram of an embodiment of a howling test system in an embodiment of the present invention;

Fig. 2 is a structural schematic diagram of another embodiment of the howling test system in the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of another embodiment of the howling test system in the embodiment of the present invention;

Fig. 4 is a schematic flow chart of an embodiment of a howling test method in an embodiment of the present invention;

Fig. 5 is a schematic flow chart of another embodiment of the howling test method in the embodiment of the present invention;

Fig. 6 is a schematic flowchart of another embodiment of the howling test method in the embodiment of the present invention.

【Detailed ways】

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items; the term "connection" as used herein, if it is a connection between a circuit or an electronic component, includes a circuit Or direct electrical connection or communication connection between electronic components, also includes indirect electrical connection between circuits or electronic components through other circuits or electronic components.

Embodiment one

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an embodiment of a howling test system in an embodiment of the present invention. As shown in FIG. 1 , the howling test system includes a playback device 110 , a pick-up nozzle 120 and a howling detector 130 .

The tested product 30 can be a Bluetooth mobile phone with a microphone channel, or other devices with a sound pickup channel. For ease of understanding, in this embodiment, the product under test 30 is a Bluetooth headset as an example for illustration. During the howling test, a player 20 is provided to connect with the bluetooth earphone 30 and play an audio signal. At this time, the bluetooth earphone 30 audio outputs a first sound signal. For example, if the Bluetooth player 20 is connected to the Bluetooth headset 30 for Bluetooth audio, and the played audio signal is pink noise, then the first sound signal output by the Bluetooth headset 30 is also pink noise.

The playback device 110 is used to play specific sound to the sound pickup channel 31 of the product under test 30, the specific sound is the same as the first sound signal (such as the pink noise received by the bluetooth earphone from the bluetooth player) of the product under test 30 audio output. The same frequency, that is, have the same phase and frequency. The playback device 110 may be a device with audio playback function such as a mobile phone and an iPad. The sound pickup channel of the Bluetooth headset 30 may be a microphone channel.

The pick-up nozzle 120 is arranged at the audio output of the product under test 30, and is used to obtain the second sound signal of the audio output of the product under test 30. 30 is the sound output after receiving the specific sound played by the playback device 110 . The second sound signal output by the audio of the Bluetooth headset 30 includes the pink noise signal received from the player 20 and the sound signal picked up by the microphone channel 31 .

Due to structural design or production process control issues, the microphone channel 31 of the Bluetooth headset 30 will pick up the first sound signal (such as pink noise) played from the speaker 32 of the Bluetooth headset 30 . However, in this embodiment, the specific sound with the same frequency as the first sound signal is played to the microphone channel 31 through the playback device 110. After the first sound signal is superimposed on the specific sound, a second sound signal with a larger amplitude is obtained. , forming a positive feedback, and testing under this positive feedback condition can amplify the problem of poor structural sealing inside the earphone, which is convenient for subsequent howling detection.

The howling detector 130 is configured to detect the amplitude of the second sound signal acquired by the pick-up nozzle 120, and if the amplitude exceeds a predetermined threshold, it is determined that the product under test 30 produces howling. The predetermined threshold can be obtained through multiple experiments. For example, 10 groups of good products of the tested product are measured by this howling test system, and 10 groups of 100Hz, 1KHz, and 1KHz components are taken to obtain the maximum value of each component, which is each The predetermined threshold for the component. Correspondingly, the howling detector 130 can separate the components of 100Hz, 1KHz, and 1KHz from the sound signal, and compare them with predetermined thresholds of 100Hz, 1KHz, and 1KHz respectively, and if any component is greater than the predetermined threshold, it is determined that howling has occurred Howling is judged to be generated only when the three components are greater than their respective predetermined thresholds.

The second sound signal acquired by the pickup mouth 120 includes the pink noise received by the Bluetooth headset 30 from the player 20 and the sound picked up by the microphone channel 31, and the sound signal picked up by the microphone channel 31 is the basis of the pink noise leaked from the Bluetooth headset The sound signal of a specific sound is superimposed on it, thus amplifying the problem of the leakage of the Bluetooth headset, so that the howling detector 130 can detect the howling problem of the Bluetooth headset more sensitively and accurately.

In this embodiment, the specific sound is played to the sound pickup channel of the product under test through the playback device. Since the specific sound is of the same frequency as the first sound signal output by the product under test, the sound pickup channel of the product under test will pick up After the two are superimposed, the sound signal with a larger amplitude is obtained, thereby amplifying the leakage problem of the product under test, so that the howling detector can detect the howling problem of the Bluetooth headset more sensitively and accurately.

Preferably, the howling test system includes a first airtight box 140, the playback device 110 is arranged in the box, and the sound pickup channel 31 side of the product under test 30 is embedded in the box to prevent the sound of the external environment from entering the sound pickup channel, Thereby shielding the influence of the external environment sound on the howling test. It can be understood that other ways can also be used to prevent the sound of the external environment from entering the sound pickup channel 31 , for example, inputting the sound from the playback device to the sound pickup channel through a closed pipe.

Preferably, the howling test system can also include a second airtight box 150, the pickup mouth 120 is arranged in the box, and the speaker 32 side of the product under test 30 is embedded in the box, so as to prevent the sound of the external environment from entering the pickup mouth 120, so as to shield the influence of the external environment sound on the howling test. It can be understood that other ways can also be used to prevent the sound from the external environment from entering the pickup mouth 120 , for example, inputting the sound from the horn of the product under test 30 into the pickup mouth 120 through a closed pipe.

Embodiment two

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of another embodiment of the howling test system in the embodiment of the present invention. As shown in FIG. 2 , the howling test system includes a playback device 210 , a pickup nozzle 220 , a howling detector 230 , a first airtight box 240 and a second airtight box 250 .

The differences between this embodiment and Embodiment 1 include:

In this embodiment, the pick-up nozzle 220 is also used to obtain the first sound signal of the audio output of the product under test 30 before the playback device 210 plays the specific sound to the sound pickup channel 31 of the product under test 30; and, the playback device 210 is specifically a speaker connected to the pickup mouth 220, which is used to convert the first sound signal acquired by the pickup nozzle 220 into sound and play it to the sound pickup channel of the product under test. For example, during howling test, provide bluetooth player 20 and bluetooth earphone 30 to carry out bluetooth audio connection and play pink noise, make bluetooth earphone 30 audio output pink noise; And the pink noise signal is sent to the speaker 210, and the speaker 210 converts the pink noise signal into sound and plays it to the sound pickup channel 31 of the Bluetooth headset 30.

In this embodiment, since the specific sound played by the playback device comes from the first sound signal obtained by the pick-up nozzle from the audio output of the product under test, the specific sound will naturally be the same as the first sound signal of the audio output of the product under test. frequency, so the playback device only needs one speaker, thus saving costs.

Embodiment three

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of another embodiment of the howling test system in the embodiment of the present invention. As shown in FIG. 3 , the howling test system includes a playback device 310 , a pickup nozzle 320 , a howling detector 330 , a first airtight box 340 and a second airtight box 350 .

The differences between this embodiment and Embodiment 2 include:

In this embodiment, the howling test system also includes an amplifier 360, which is used to perform a preset multiplier on the sound signal before the speaker 320 converts the acquired first sound into sound and plays it to the sound pickup channel 31 of the product under test 30. Amplification to counteract the attenuation of the sound signal during transmission. More preferably, by setting the preset multiple, the amplified sound signal can be made to have the same amplitude as the first sound signal of the audio output of the product under test, so that the first sound signal of the audio output of the product under test is played to the pickup as it is. Channel 31.

For example, during howling test, provide bluetooth player 20 and bluetooth earphone 30 to carry out bluetooth audio connection and play pink noise, make bluetooth earphone 30 output pink noise; The pink noise signal is sent to the amplifier 360, and the amplifier 360 amplifies the pink noise signal by a preset multiple and sends it to the speaker 310, and the speaker 310 plays the amplified pink noise signal to the sound pickup channel 31 of the product under test 30.

Correspondingly, the embodiment of the present invention also provides a howling test device, including: a playback device, used to play a specific sound to the sound pickup channel of the product under test, the specific sound is consistent with the first sound signal output by the product under test The same as the same frequency; the pick-up nozzle is used to obtain the second sound signal of the audio output of the product under test after the playback device plays it, and output the sound signal to the howling detector.

Embodiment Four

Correspondingly, the embodiment of the present invention also provides a howling test method. Please refer to FIG. 4 . FIG. 4 is a schematic flowchart of an embodiment of a howling test method in an embodiment of the present invention. As shown in Figure 4, this embodiment includes:

Step 401, playing a specific sound to the sound pickup channel of the product under test, the specific sound having the same frequency as the first sound signal of the audio output of the product under test;

Referring to the above-mentioned embodiment, the execution subject of step 401 may be a device with audio playback function such as a mobile phone or an iPad, or may be a speaker. The product under test can be a Bluetooth mobile phone with a pickup channel (microphone channel), or other devices with a pickup channel. For ease of understanding, in this embodiment, a bluetooth headset is taken as an example for description.

During the howling test, a player is provided to connect to the Bluetooth headset and play sound, for example, a Bluetooth player is provided to perform a Bluetooth audio connection to the Bluetooth headset and play pink noise, so that the Bluetooth headset outputs the first sound signal, that is, the pink noise. Due to structural design or production process control issues, the microphone channel of the Bluetooth headset will pick up the pink noise leaked from the speaker of the Bluetooth headset. However, in this embodiment, the specific sound is played to the microphone channel through the playback device, and the specific sound has the same frequency as the leaked pink noise. After the two are superimposed, a sound signal with a larger amplitude is obtained, so the microphone channel will pick up this A sound signal that increases in amplitude.

Step 402, acquiring the second sound signal of the audio output of the product under test;

The subject of execution of step 402 may be a pickup installed at the audio output of the product under test, such as a microphone device. The second sound signal of the audio output of the Bluetooth headset obtained by the pickup mouth includes: the pink noise received by the Bluetooth headset from the player and the sound picked up by the microphone channel of the Bluetooth headset, and the sound signal picked up by the microphone channel of the Bluetooth headset is a specific sound The sound signal superimposed with the leaked pink noise above.

Step 403, if the amplitude of the acquired second sound signal exceeds a predetermined threshold, it is determined that the product under test produces howling.

The execution subject of step 403 may be a howling detector. The predetermined threshold can be obtained through multiple experiments. For example, 10 groups of good products of the tested product are measured by this howling test system, and 10 groups of 100Hz, 1KHz, and 1KHz components are taken to obtain the maximum value of each component, which is each The predetermined threshold for the component. Correspondingly, the howling detector can separate the components of 100Hz, 1KHz, and 1KHz from the sound signal, and compare them with the predetermined thresholds of 100Hz, 1KHz, and 1KHz respectively. Any one of the components is greater than the predetermined threshold, and it is judged that howling has occurred , or the three components are greater than their respective predetermined thresholds before it is determined that howling has occurred.

In this embodiment, by playing a specific sound to the sound pickup channel of the product under test, since the specific sound is at the same frequency as the first sound signal output by the audio output of the product under test, the sound pickup channel of the product under test will pick up this sound signal. After the two are superimposed, the sound signal with a larger amplitude is obtained, thereby amplifying the leakage problem of the product under test. By detecting whether the amplitude of the second sound signal of the audio output of the product under test exceeds a predetermined threshold, and the second sound signal of the audio output of the product under test includes the sound signal picked up by the sound pickup channel, due to the amplitude of the picked up sound signal It has become larger, so it can detect the howling problem caused by the leakage of the Bluetooth headset more sensitively and accurately.

Embodiment five

Please refer to FIG. 5 . FIG. 5 is a schematic flowchart of another embodiment of the howling test method in the embodiment of the present invention. As shown in Figure 5, this embodiment includes:

Step 501, acquiring the first sound signal of the audio output of the product under test;

The subject of execution of step 501 and step 503 may be the same mouthpiece.

Step 502, converting the acquired first sound signal into sound and playing it to the sound pickup channel of the product under test;

The execution subject of step 502 may be a speaker connected to the pickup mouth 220 .

For example, during howling test, provide bluetooth player and tested product (bluetooth earphone) to carry out bluetooth audio connection and play pink noise, make bluetooth earphone output pink noise; The pink noise is picked up at the place, and the pink noise signal is sent to the speaker; step 502 is specifically that the speaker converts the pink noise signal into sound and plays it to the sound pickup channel of the Bluetooth headset.

Step 503, acquiring the second sound signal of the audio output of the product under test;

For step 503, refer to the description of step 402.

Step 504, if the amplitude of the acquired second sound signal exceeds a predetermined threshold, it is determined that the product under test produces howling.

For step 504, refer to the description of step 403.

In this embodiment, since the specific sound played comes from the first sound signal obtained from the audio output of the product under test, the specific sound will naturally have the same frequency as the first sound signal of the audio output of the product under test, so the playback device only Only one speaker is needed, which saves the cost.

Embodiment six

Please refer to FIG. 6 . FIG. 6 is a schematic flowchart of another embodiment of the howling test method in the embodiment of the present invention. As shown in Figure 6, this embodiment includes:

Step 601, acquiring the first sound signal of the audio output of the product under test;

For step 601, refer to the description of step 501.

Step 602, amplifying the acquired first sound signal by a preset multiple;

The execution subject of step 602 may be an amplifier, which is used to amplify the first sound signal obtained in step 601 by a preset multiple before step 603, so as to offset the attenuation of the sound signal during transmission. More preferably, the setting of the preset multiple can make the amplified sound signal have the same amplitude as the first sound signal of the audio output of the product under test, so that the first sound signal of the audio output of the product under test is played to the product under test as it is pickup channel.

Step 603, converting the amplified first sound signal into sound and playing it to the sound pickup channel of the product under test;

For step 603, refer to the description of step 502.

Step 604, acquiring the second sound signal of the audio output of the product under test;

For step 604, refer to the description of step 402.

Step 605, if the amplitude of the acquired second sound signal exceeds the predetermined threshold, it is determined that the product under test produces howling.

For step 605, refer to the description of step 403.

Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the embodiments can be completed by instructing related hardware through a program. The program can be stored in a computer-readable storage medium, and the storage medium can include: only Read memory (ROM, Read Only Memory), random access memory (RAM, Random AccessMemory), magnetic disk or optical disk, etc. The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

The above specific embodiments illustrate but do not limit the present invention, and those skilled in the art can design many alternative examples within the scope of the claims. Those skilled in the art should appreciate that appropriate adjustments, modifications, etc. can be made to specific implementations within the scope of the present invention as defined by the appended claims. Therefore, all modifications and changes made according to the spirit and principle of the present invention are within the scope of the present invention defined by the appended claims.

Claims (12)

1. The test method 1. one kind is uttered long and high-pitched sounds, which is characterized in that including：

   Specific sound is played to the pickup channel of test product, the specific sound and the first of the audio output of the test product The same same frequency of voice signal；

   Obtain the second sound signal of the audio output of the test product, the second sound signal be the test product by this The sound that one voice signal exports after being superimposed with the specific sound；

   If the amplitude of the second sound signal obtained is more than predetermined threshold, judges that the test product produces and utter long and high-pitched sounds.
2. 2. test method according to claim 1 of uttering long and high-pitched sounds, which is characterized in that described that specific sound is played to test product Pickup channel before include：Obtain the first voice signal of the audio output of the test product；

   The pickup channel that specific sound is played to test product specifically includes：First voice signal of acquisition is converted to Sound and the pickup channel for playing to the test product.
3. 3. test method according to claim 2 of uttering long and high-pitched sounds, which is characterized in that first voice signal by acquisition is converted For sound and play to the test product pickup channel before further include：

   First voice signal of acquisition is carried out to the amplification of preset times.
4. 4. test method according to claim 3 of uttering long and high-pitched sounds, which is characterized in that first voice signal by acquisition carries out The amplification of preset times specifically includes：

   First voice signal of acquisition is carried out to the amplification of preset times, so that amplified voice signal and test product First voice signal amplitude of audio output is identical.
5. 5. test method according to any one of claim 1 to 4 of uttering long and high-pitched sounds, which is characterized in that the specific sound is powder Red noise.
6. The test system 6. one kind is uttered long and high-pitched sounds, which is characterized in that including：

   Playing device, the pickup channel for specific sound to be played to test product, the specific sound and the test product The same same frequency of the first voice signal of audio output；

   Pickup mouth, for after playing device broadcasting, obtaining the rising tone message of the audio output of the test product Number, which is the sound exported after first voice signal is superimposed by the test product with the specific sound；

   It utters long and high-pitched sounds detector, the amplitude for detecting the second sound signal that the pickup mouth obtains, if the amplitude is more than predetermined threshold Value, then judge that the test product produces and utter long and high-pitched sounds.
7. 7. test system according to claim 6 of uttering long and high-pitched sounds, it is characterised in that：

   The pickup mouth is additionally operable to before the pickup channel that specific sound is played to test product in the playing device, is obtained First voice signal of the audio output of test product；

   The playing device includes loudspeaker, and the first voice signal for obtaining the pickup mouth is converted to sound and plays to The pickup channel of the test product.
8. 8. test system according to claim 7 of uttering long and high-pitched sounds, which is characterized in that the system further includes：

   Amplifier, for the first voice signal of acquisition to be converted to sound in the loudspeaker and plays to the test product Before pickup channel, which is carried out to the amplification of preset times.
9. 9. test system according to claim 8 of uttering long and high-pitched sounds, which is characterized in that the amplifier is used for the first voice signal The amplification of preset times is carried out, so that the voice signal width of amplified voice signal and the audio output of the test product It spends identical.
10. 10. the test system of uttering long and high-pitched sounds according to any one of claim 6 to 9, which is characterized in that the system further includes first Closed box, the playing device are arranged in the box, and the pickup channel side of the test product is embedded in the box.
11. 11. the test system of uttering long and high-pitched sounds according to any one of claim 6 to 9, which is characterized in that the system further includes second Closed box, the pickup mouth are arranged in the box, and the loudspeaker side of the test product is embedded in the box.
12. The test device 12. one kind is uttered long and high-pitched sounds, which is characterized in that including：

    Playing device, the pickup channel for specific sound to be played to test product, the specific sound and the test product The same same frequency of the first voice signal of audio output；

    Pickup mouth, for after playing device broadcasting, obtaining the rising tone message of the audio output of the test product Number, and the second sound signal is exported to detector of uttering long and high-pitched sounds, which is the test product by first sound The sound that signal exports after being superimposed with the specific sound.