WO2019169687A1 - Audio adjustment method and apparatus, and audio device - Google Patents

Abstract

Disclosed are an audio adjustment method and apparatus, and an audio device. The method comprises the following steps: projecting infrared light spots outward by means of speckle projection apparatuses; receiving, by means of infrared receiving apparatuses, reflected light reflected back by the infrared light spots; determining distribution information of surrounding obstacles according to the reflected light; and adjusting audio output characteristics according to the distribution information of the obstacles. The audio adjustment method provided by embodiments of the present invention achieves active environment detection and adaptive adjustment by using the speckle projection apparatuses and the infrared receiving apparatuses in a manner of using infrared light as an active beacon to perform environment sensing. Compared with existing ultrasonic detection and other methods, infrared detection is low in implementation costs and friendly to surrounding environments, will not adversely affect the surrounding environments (such as a pet), and improves the user experience.

Description

Audio adjustment method, device and audio device Technical field

The invention relates to the field of smart home technology, in particular to an audio adjustment method, device and audio device.

Background technique

With the development of smart home technology, various home appliances are becoming more and more intelligent, including smart audio devices that can interact with users. Intelligent audio equipment can sense the surrounding environment. When the surrounding environment changes, adjust the audio output characteristics, optimize the audio effect, and provide the user with the best listening experience.

Existing smart audio devices primarily sense the surrounding environment through ultrasonic sensors. However, the cost of the ultrasonic sensor is high, and the ultrasonic wave has an adverse effect on the surrounding environment, such as affecting pets such as cats and dogs.

Summary of invention

technical problem

SUMMARY OF THE INVENTION A primary object of the present invention is to provide an audio adjustment method, apparatus, and audio apparatus that achieve low cost and are environmentally friendly.

Problem solution

Technical solution

To achieve the above objective, an embodiment of the present invention provides an audio adjustment method, where the method includes the following steps:

Projecting an infrared spot outward through the speckle projection device;

Receiving reflected light reflected by the infrared spot by an infrared receiving device;

Determining distribution information of surrounding obstacles according to the reflected light;

The audio output characteristics are adjusted according to the distribution information of the obstacle.

Optionally, the speckle projection device and the infrared receiving device are arranged in plurality and alternately.

Optionally, the speckle projection device and the infrared receiving device are arranged in an arc shape.

Optionally, the speckle projection device and the infrared receiving device are arranged in a circle.

Optionally, the distribution information of the obstacle includes a direction and a distance of the obstacle.

Optionally, the infrared receiving device is a photodiode, and the step of determining distribution information of surrounding obstacles according to the reflected light includes:

Reading the induced current of the photodiode;

The direction and distance of the obstacle are calculated based on the induced current and normal of the photodiode.

Optionally, the step of calculating the direction and distance of the obstacle according to the induced current and the normal direction of the photodiode includes:

Calculate the direction and distance of the obstacle according to the following formula:

;

among them,

For the normal of the photodiode,

Is the induced current of the photodiode.

Optionally, the direction and distance of the obstacle of an area are determined by a group of two adjacent infrared receiving devices.

Optionally, the audio output characteristic comprises at least one of an audio volume, an audio track, and an audio equalization parameter.

Optionally, the step of adjusting audio output characteristics according to the distribution information of the obstacle includes:

The audio volume is adjusted separately for the distance of the obstacles in the respective directions, the magnitude of the audio volume being inversely proportional to the distance of the obstacle in the corresponding direction.

An embodiment of the present invention also provides an audio adjustment apparatus, where the apparatus includes:

a projection module for projecting an infrared spot outward through the speckle projection device;

a receiving module, configured to receive, by the infrared receiving device, the reflected light reflected by the infrared spot;

a determining module, configured to determine distribution information of surrounding obstacles according to the reflected light;

And an adjustment module, configured to adjust an audio output characteristic according to the distribution information of the obstacle.

Optionally, the infrared receiving device is a photodiode, and the determining module includes:

a reading unit for reading an induced current of the photodiode;

And a calculating unit, configured to calculate a direction and a distance of the obstacle according to an induced current and a normal of the photodiode.

Optionally, the calculating unit calculates the direction and distance of the obstacle according to the following formula:

;

among them,

For the normal of the photodiode,

Is the induced current of the photodiode.

Optionally, the determining module is configured to determine a direction and a distance of an obstacle of an area by using a group of two adjacent infrared receiving devices.

Optionally, the audio output characteristic comprises at least one of an audio volume, an audio track, and an audio equalization parameter.

Optionally, the adjusting module is configured to: respectively adjust an audio volume for a distance of an obstacle in each direction, the magnitude of the audio volume being inversely proportional to a distance of an obstacle in a corresponding direction.

Embodiments of the present invention also provide an audio device including a memory, a processor, and at least one application stored in the memory and configured to be executed by the processor, the application being configured to be used for Perform the aforementioned audio adjustment method.

Advantageous effects of the invention

Beneficial effect

An audio adjustment method provided by an embodiment of the present invention utilizes a speckle projection device and an infrared receiving device to implement active detection and adaptive adjustment of the environment by using infrared rays as an active beacon for environment sensing. Compared with the existing ultrasonic detection methods, the infrared detection has a low implementation cost, and the infrared detection is friendly to the surrounding environment, and does not adversely affect the surrounding environment (such as pets), thereby improving the user experience.

Brief description of the drawing

DRAWINGS

1 is a flow chart of an embodiment of an audio adjustment method of the present invention;

2 is a schematic structural diagram of an example of an audio device to which an audio adjustment method according to an embodiment of the present invention is applied;

3 is a schematic view showing the arrangement of a speckle projection device and an infrared receiving device in an embodiment of the present invention;

4 is a schematic diagram of infrared speckle projection and reflection in an embodiment of the present invention;

FIG. 5 is a schematic diagram of an infrared receiving device receiving reflected light according to an embodiment of the present invention; FIG.

Figure 6 is a block diagram showing an embodiment of an audio adjusting device of the present invention;

Figure 7 is a block diagram of the determination module of Figure 6.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

BEST MODE FOR CARRYING OUT THE INVENTION

BEST MODE FOR CARRYING OUT THE INVENTION

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

The singular forms "a", "an", "the" It is to be understood that the phrase "comprise" or "an" Integers, steps, operations, components, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element. Further, "connected" or "coupled" as used herein may include either a wireless connection or a wireless coupling. The phrase "and/or" used herein includes all or any one and all combinations of one or more of the associated listed.

Those skilled in the art will appreciate that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the invention belongs, unless otherwise defined. It should also be understood that terms such as those defined in a general dictionary should be understood to have meaning consistent with the meaning in the context of the prior art, and will not be idealized or excessive unless specifically defined as here. The formal meaning is explained.

The audio adjustment method and device of the embodiment of the present invention are mainly applied to an audio device, and may of course be applied to other sounding devices, which is not limited by the present invention. The following is a detailed description of the application to the audio equipment.

Referring to FIG. 1, an embodiment of an audio adjustment method of the present invention is proposed. The method includes the following steps:

S11. Projecting an infrared spot outward through the speckle projection device.

S12. Receive, by the infrared receiving device, the reflected light reflected by the infrared spot.

S13. Determine distribution information of surrounding obstacles according to the reflected light.

S14. Adjust the audio output characteristic according to the distribution information of the obstacle.

The acoustic device of the embodiment of the present invention is as shown in FIG. 2, and an environment sensing component 100 is disposed at the top thereof, and the environment sensing component 100 is composed of a speckle projection device and an infrared receiving device.

As shown in FIG. 3, the speckle projection device 101 and the infrared receiving device 102 are arranged in plurality and alternately, and the speckle projection device 101 and the infrared receiving device 102 are preferably arranged in an arc shape to expand the sensing range of the environment sensing component. In the embodiment of the present invention, the speckle projection device 101 and the infrared receiving device 102 are arranged in a circle, and 360 degrees without dead angle perception can be realized for the surrounding environment.

As shown in FIG. 4, the audio device projects the infrared spot outwardly through the speckle projection device 101 in real time or at a time. After the infrared spot is projected onto an obstacle (such as a wall), it is reflected back, and the audio device passes through the infrared receiving device 102. Receives reflected light reflected from the infrared spot. Depending on the direction and intensity of the reflected light, the audio equipment can determine the distribution of information such as the direction and distance of the surrounding obstacles (distance from the audio equipment).

In the embodiment of the present invention, the infrared receiving device 102 is an infrared photosensitive element, preferably a photodiode. When the reflected light hits the photodiode, the photodiode generates an induced current. The induced current of the photodiode is related to the received light intensity of the reflected light. The greater the light intensity, the larger the induced current.

As shown in FIG. 5, the reflected light reflected from the spot projected by the speckle projection device 101 is received by two adjacent infrared receiving devices 102 (photodiodes), and the normal directions of the two infrared receiving devices 102 (photodiodes) (normal) Direction)

,

The angle between the infrared receiving device 102 (photodiode) and the horizontal line is α. Assuming that the light source (infrared spot) is far away from the infrared receiving device 102 (photodiode) and much larger than the distance between the two infrared receiving devices 102 (photodiodes), the reflected light is approximately parallel light, and the direction is

Said.

The illumination intensity of the reflected light received by the infrared receiving device 102 (photodiode) is related to the incident angle of the reflected light on the infrared receiving device 102 (photodiode), and the distance between the obstacle reflecting the infrared spot and the acoustic device is different, and the incident angle is different. The incident angle is actually related to the normal direction of the infrared receiving device 102 (photodiode) and the direction of the reflected light. It has been found that the induced current on the infrared receiving device 102 (photodiode) and the infrared receiving device 102 (photodiode) The normal direction is proportional to the dot product of the direction of the reflected light, that is:

;

among them,

Inductive current for the infrared receiving device 102 (photodiode),

Is the normal of the infrared receiving device 102 (photodiode),

To reflect the direction of the light, k is the scale factor.

Therefore, in the embodiment of the present invention, the acoustic device reads the induced current of the infrared receiving device 102 (photodiode), and can calculate the direction and approximate of the obstacle according to the induced current and the normal direction of the infrared receiving device 102 (photodiode). distance. Specifically, the audio device can calculate the direction and distance of the obstacle according to the following formula:

;

among them,

Is the normal of the infrared receiving device 102 (photodiode),

For the induced current of the infrared receiving device 102 (photodiode), T represents vector conversion. The direction of the obstacle is the same as the direction of the reflected light, and the distance is proportional to the intensity of the reflected light.

In the embodiment of the present invention, the audio device preferably determines the direction and distance of the obstacle of an area by using two adjacent infrared receiving devices 102 (photodiodes) as a group. Finally, the distribution information of all obstacles around is determined by all the infrared receiving devices 102 (photodiodes).

Those skilled in the art can understand that in addition to using a photodiode as the infrared receiving device, other infrared photosensitive elements can be used as the infrared receiving device, as long as the direction and distance of the obstacle can be determined according to the direction and intensity of the reflected light. However, the present invention will not be repeated here.

When the distribution information of the surrounding obstacles is determined, the audio device adjusts the audio output characteristics accordingly. The audio output characteristics may include one or a combination of at least two of audio volume, audio track, audio equalization parameters, and the like. Among them, the audio equalization parameters can be adjusted by the audio equalizer.

Taking the adjustment of the audio volume as an example, the audio device adjusts the audio volume separately for the distance of the obstacle in each direction, and the magnitude of the audio volume is inversely proportional to the distance of the obstacle in the corresponding direction. That is, the direction farther from the obstacle increases the output power and increases the audio volume; the direction closer to the obstacle reduces the output power and lowers the audio volume. Other methods for adjusting the audio output characteristics are similar to the above, and the description of the embodiments of the present invention will not be repeated.

Thereby, the adaptive dynamic adjustment of the audio through the sensing environment is realized, so that the listeners in all directions can obtain the best audio effect, or the listener can get the best audio effect when approaching or away from the audio device, thereby improving the user's hearing experience. . When the audio equipment moves from one environment to another, the audio equipment can automatically adjust the audio according to the surrounding environment, which improves the intelligence of the audio equipment.

The audio adjustment method of the embodiment of the invention uses the speckle projection device and the infrared receiving device to implement active detection and adaptive adjustment of the environment by using infrared rays as an active beacon for environment sensing. Compared with the existing ultrasonic detection methods, the infrared detection has a low implementation cost, and the infrared detection is friendly to the surrounding environment, and does not adversely affect the surrounding environment (such as pets), thereby improving the user experience.

Referring to FIG. 6, an embodiment of an audio adjustment apparatus of the present invention is provided. The apparatus includes a projection module 10, a receiving module 20, a determining module 30, and an adjusting module 40, wherein: the projection module 10 is configured to extend outward through the speckle projection device. The infrared light spot is projected; the receiving module 20 is configured to receive the reflected light reflected by the infrared spot through the infrared receiving device; the determining module 30 is configured to determine the distribution information of the surrounding obstacle according to the reflected light; and the adjusting module 40 is configured to use the obstacle The distribution information adjusts the audio output characteristics.

As shown in FIG. 3, in the embodiment of the present invention, the speckle projection device 101 and the infrared receiving device 102 are arranged in multiple and alternately, and the speckle projection device 101 and the infrared receiving device 102 are preferably arranged in an arc shape to expand the environment. Perceive the perceived range of components. In the embodiment of the present invention, the speckle projection device 101 and the infrared receiving device 102 are arranged in a circle, and 360 degrees without dead angle perception can be realized for the surrounding environment.

As shown in FIG. 4, the projection module 10 projects the infrared spot outwardly through the speckle projection device 101 in real time or at a time. After the infrared spot is projected onto an obstacle (such as a wall), it is reflected back, and the receiving module 20 receives the infrared light. Device 102 receives the reflected light reflected from the infrared spot. Based on the direction and intensity of the reflected light, the determination module 30 is capable of determining distribution information such as the direction and distance of the surrounding obstacles (distance from the acoustic device).

In the embodiment of the present invention, the infrared receiving device 102 is an infrared photosensitive element, preferably a photodiode. When the reflected light hits the photodiode, the photodiode generates an induced current. The induced current of the photodiode is related to the received light intensity of the reflected light. The greater the light intensity, the larger the induced current.

As shown in FIG. 5, the reflected light reflected from the spot projected by the speckle projection device 101 is received by two adjacent infrared receiving devices 102 (photodiodes), and the normal directions of the two infrared receiving devices 102 (photodiodes) (normal) Direction)

,

The angle between the infrared receiving device 102 (photodiode) and the horizontal line is α. Assuming that the light source (infrared spot) is far away from the infrared receiving device 102 (photodiode) and much larger than the distance between the two infrared receiving devices 102 (photodiodes), the reflected light is approximately parallel light, and the direction is

Said.

The illumination intensity of the reflected light received by the infrared receiving device 102 (photodiode) is related to the incident angle of the reflected light on the infrared receiving device 102 (photodiode), and the distance between the obstacle reflecting the infrared spot and the acoustic device is different, and the incident angle is different. The incident angle is actually related to the normal direction of the infrared receiving device 102 (photodiode) and the direction of the reflected light. It has been found that the induced current on the infrared receiving device 102 (photodiode) and the infrared receiving device 102 (photodiode) The normal direction is proportional to the dot product of the direction of the reflected light, that is:

;

among them,

Inductive current for the infrared receiving device 102 (photodiode),

Is the normal of the infrared receiving device 102 (photodiode),

To reflect the direction of the light, k is the scale factor.

Therefore, in the embodiment of the present invention, the determining module 30 includes a reading unit 31 and a calculating unit 32, as shown in FIG. 7, wherein: the reading unit 31 is configured to read an induced current of the infrared receiving device 102 (photodiode); The calculating unit 32 is configured to calculate the direction and distance of the obstacle according to the induced current and the normal direction of the infrared receiving device 102 (photodiode).

Specifically, the calculation unit 32 calculates the direction and distance of the obstacle according to the following formula:

;

among them,

Is the normal of the infrared receiving device 102 (photodiode),

For the induced current of the infrared receiving device 102 (photodiode), T represents vector conversion. The direction of the obstacle is the same as the direction of the reflected light, and the distance is proportional to the intensity of the reflected light.

In the embodiment of the present invention, the determining module 30 preferably determines the direction and distance of the obstacle of an area by using two adjacent infrared receiving devices 102 (photodiodes) as a group. Finally, the distribution information of all obstacles around is determined by all the infrared receiving devices 102 (photodiodes).

Those skilled in the art can understand that in addition to using a photodiode as the infrared receiving device, other infrared photosensitive elements can be used as the infrared receiving device, as long as the direction and distance of the obstacle can be determined according to the direction and intensity of the reflected light. However, the present invention will not be repeated here.

After determining the distribution information of the surrounding obstacles, the adjustment module 40 adjusts the audio output characteristics accordingly. The audio output characteristics may include one or a combination of at least two of audio volume, audio track, audio equalization parameters, and the like. Among them, the audio equalization parameters can be adjusted by the audio equalizer.

Taking the adjustment of the audio volume as an example, the adjustment module 40 adjusts the audio volume separately for the distance of the obstacle in each direction, and the magnitude of the audio volume is inversely proportional to the distance of the obstacle in the corresponding direction. That is, the direction farther from the obstacle increases the output power and increases the audio volume; the direction closer to the obstacle reduces the output power and lowers the audio volume. Other methods for adjusting the audio output characteristics are similar to the above, and the description of the embodiments of the present invention will not be repeated.

Thereby, the adaptive dynamic adjustment of the audio through the sensing environment is realized, so that the listeners in all directions can obtain the best audio effect, or the listener can get the best audio effect when approaching or away from the audio device, thereby improving the user's hearing experience. . When the audio equipment moves from one environment to another, the audio equipment can automatically adjust the audio according to the surrounding environment, which improves the intelligence of the audio equipment.

The audio adjusting device of the embodiment of the invention realizes active detection and adaptive adjustment of the environment by using the speckle projection device and the infrared receiving device, and adopting infrared rays as an active beacon for environment sensing. Compared with the existing ultrasonic detection methods, the infrared detection has a low implementation cost, and the infrared detection is friendly to the surrounding environment, and does not adversely affect the surrounding environment (such as pets), thereby improving the user experience.

The present invention also contemplates an audio device comprising a memory, a processor and at least one application stored in the memory and configured to be executed by the processor, the application being configured to perform the aforementioned audio adjustment method. The audio adjustment method includes the steps of: projecting an infrared spot outward through the speckle projection device; receiving the reflected light reflected by the infrared spot through the infrared receiving device; determining distribution information of the surrounding obstacle according to the reflected light; and distributing according to the obstacle Information adjusts the audio output characteristics. The audio adjustment method described in this embodiment is the audio adjustment method in the foregoing embodiment of the present invention, and details are not described herein again.

Those skilled in the art will appreciate that the present invention includes apparatus that is directed to performing one or more of the operations described herein. These devices may be specially designed and manufactured for the required purposes, or may also include known devices in a general purpose computer. These devices have computer programs stored therein that are selectively activated or reconfigured. Such computer programs may be stored in a device (eg, computer) readable medium or in any type of medium suitable for storing electronic instructions and coupled to a bus, respectively, including but not limited to any Types of disks (including floppy disks, hard disks, optical disks, CD-ROMs, and magneto-optical disks), ROM (Read-Only Memory), RAM (Random Access Memory), EPROM (Erasable Programmable Read-Only Memory) , EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or light card. That is, a readable medium includes any medium that is stored or transmitted by a device (eg, a computer) in a readable form.

Those skilled in the art will appreciate that each block of the block diagrams and/or block diagrams and/or flow diagrams and combinations of blocks in the block diagrams and/or block diagrams and/or flow diagrams can be implemented by computer program instructions. . Those skilled in the art will appreciate that these computer program instructions can be implemented by a general purpose computer, a professional computer, or a processor of other programmable data processing methods, such that the processor is executed by a computer or other programmable data processing method. The blocks of the disclosed structure and/or block diagrams and/or flow diagrams or blocks specified in the various blocks.

Those skilled in the art can understand that the steps, measures, and solutions in the various operations, methods, and processes that have been discussed in the present invention may be alternated, changed, combined, or deleted. Further, other operations, methods, and steps in the various operations, methods, and processes that have been discussed in the present invention may be alternated, modified, rearranged, decomposed, combined, or deleted. Further, the steps, measures, and solutions in the prior art having various operations, methods, and processes disclosed in the present invention may also be alternated, changed, rearranged, decomposed, combined, or deleted.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of the present invention.

Claims (15)

An audio adjustment method, comprising the steps of: Projecting an infrared spot outward through the speckle projection device; Receiving reflected light reflected by the infrared spot by an infrared receiving device; Determining distribution information of surrounding obstacles according to the reflected light; The audio output characteristics are adjusted according to the distribution information of the obstacle. The audio adjustment method according to claim 1, wherein the speckle projection device and the infrared receiving device are arranged in plurality and alternately. The audio adjustment method according to claim 1, wherein the speckle projection device and the infrared receiving device are arranged in an arc shape. The audio adjustment method according to claim 1, wherein said speckle projection means and said infrared receiving means are arranged in a circle. The audio adjustment method according to claim 1, wherein the distribution information of the obstacle includes a direction and a distance of the obstacle. The audio adjustment method according to claim 1, wherein the distribution information of the obstacle includes a direction and a distance of the obstacle, the infrared receiving device is a photodiode, and the surrounding is determined according to the reflected light. The steps of the distribution information of the obstacle include: Reading the induced current of the photodiode; The direction and distance of the obstacle are calculated based on the induced current and normal of the photodiode. The audio adjustment method according to claim 6, wherein the step of calculating the direction and distance of the obstacle according to the induced current and the normal direction of the photodiode comprises: Calculate the direction and distance of the obstacle according to the following formula: ; among them, For the normal of the photodiode, Is the induced current of the photodiode. The audio adjustment method according to claim 1, wherein the direction and distance of the obstacle of an area are determined by a group of two adjacent infrared receiving devices. The audio adjustment method according to any one of claims 1-8, wherein the audio output characteristic comprises at least one of an audio volume, an audio track, and an audio equalization parameter. The audio adjustment method according to claim 9, wherein the adjusting the audio output characteristic according to the distribution information of the obstacle comprises: The audio volume is adjusted separately for the distance of the obstacles in the respective directions, the magnitude of the audio volume being inversely proportional to the distance of the obstacle in the corresponding direction. An audio adjustment device, comprising: a projection module for projecting an infrared spot outward through the speckle projection device; a receiving module, configured to receive, by the infrared receiving device, the reflected light reflected by the infrared spot; a determining module, configured to determine distribution information of surrounding obstacles according to the reflected light; And an adjustment module, configured to adjust an audio output characteristic according to the distribution information of the obstacle. The audio adjusting device according to claim 11, wherein the distribution information of the obstacle includes a direction and a distance of the obstacle, the infrared receiving device is a photodiode, and the determining module comprises: a reading unit for reading an induced current of the photodiode; And a calculating unit configured to calculate a direction and a distance of the obstacle according to an induced current and a normal of the photodiode. The audio adjusting device according to claim 12, wherein said calculating unit calculates the direction and distance of said obstacle according to the following formula: ; among them, For the normal of the photodiode, Is the induced current of the photodiode. The audio adjusting device according to any one of claims 11 to 13, wherein the audio output characteristic comprises an audio volume, and the adjusting module is configured to: respectively adjust an audio volume for a distance of an obstacle in each direction, The magnitude of the audio volume is inversely proportional to the distance of the obstacle in the corresponding direction. An audio device comprising a memory, a processor and at least one application stored in the memory and configured to be executed by the processor, wherein the application is configured to execute the claims The audio adjustment method according to any one of 1 to 10.

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