WO2017128481A1 - Method of controlling bone conduction headphone, device and bone conduction headphone apparatus - Google Patents

Abstract

The invention discloses a method of controlling a bone conduction headphone, a device and a bone conduction headphone apparatus. The bone conduction headphone apparatus comprises at least one bone conduction earpiece used for a left ear and at least one bone conduction earpiece used for a right ear. The method comprises: obtaining location information and an original volume of a simulated sound source; computing, according to the location information, a distance between the simulated sound source and a bone conduction earpiece, computing, according to the distance, a time required to transmit the simulated sound source to a corresponding bone conduction earpiece; computing, according to the original volume and the distance, a volume of the simulated sound source transmitted to the corresponding bone conduction earpiece; and controlling the bone conduction earpiece to perform according to a corresponding time and a corresponding volume a playback operation. The method and device compute according to location information of a simulated sound source to obtain the sound transmitting effect at each bone conduction earpiece, and control the bone conduction earpiece to perform a playback operation to produce realistic playback content. The invention also discloses a bone conduction headphone apparatus including a bone conduction playback control device.

Description

Bone conduction earphone playing control method, device and bone conduction earphone device

This application claims priority to Chinese Patent Application No. 201610051770.8, entitled "Bone Conduction Headphone Playback Control Method, Device and Bone Conduction Headphone Device", which is filed on January 26, 2016. This is incorporated herein by reference.

Technical field

The present invention relates to the field of electronic device technology, and more particularly to a playback control method and apparatus for a bone conduction earphone. Further, the present invention relates to a bone conduction earphone device including a playback control device of the above-described bone conduction earphone.

Background technique

Headphone devices usually use air conduction to achieve sound transmission, and the sound of the earphones is transmitted into the ear, and the user's eardrum and cochlea are used to obtain sound. At this stage, there is a type of earphone through the bone conduction mode. The bone conduction is a sound transmission mode, which converts the sound into mechanical vibration of different frequencies, through the human skull, the bone labyrinth, the inner ear lymphatic transmission, the auger, the auditory nerve, and the auditory center. To deliver sound waves. Compared to the classical sound transmission method that produces sound waves through the diaphragm, bone conduction eliminates many steps of sound wave transmission, enabling clear sound reproduction in noisy environments, and sound waves are not affected by others in the air. .

However, for the increasingly diversified and high-level market of audio-visual products, ordinary sound-transmitting bone conduction headphones have been unable to meet their ever-changing needs. For example, existing bone conduction earphones can only achieve ordinary sound effects, and ordinary sound effects do not have a sense of reality, and cannot produce a realistic sound.

In summary, how to provide a bone conduction earphone capable of producing a realistic sound effect is an urgent problem to be solved by those skilled in the art.

Summary of the invention

In view of the above, an object of the present invention is to provide a bone conduction earphone playing control method and apparatus, which can control a bone conduction earphone to generate a 3D sound effect, so that the playing content has a sense of reality.

Another object of the present invention is to provide a bone conduction earphone device including the above-described bone conduction earphone playback control device, which can realize 3D sound effects.

In order to achieve the above object, the present invention provides the following technical solutions:

A play control method for a bone conduction earphone is applied to a bone conduction earphone device, the bone conduction earphone device comprising at least one bone conduction earphone for a left ear circumference and at least one bone conduction earphone for a right ear circumference, comprising:

Obtaining the position information and the original volume of the analog sound source;

Calculating, according to the location information, a distance between the analog sound source and the bone conduction earphone, and calculating, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone; according to the original volume and location Calculating the volume of the simulated sound source to the corresponding volume of the bone conduction earphone;

The bone conduction earphone is controlled to play according to the corresponding time and the corresponding volume.

Preferably, the step of calculating the distance between the analog sound source and the bone conduction earphone according to the location information comprises:

Obtaining position information of the bone conduction earphone, and calculating a distance between the analog sound source and the bone conduction earphone according to position information of the analog sound source and position information of the bone conduction earphone.

Preferably, the step of calculating the distance between the analog sound source and the bone conduction earphone according to the location information comprises:

Set the center of the binaural distance to the origin of the XOY coordinate axis;

When the bone conduction earphone is located on the XOY plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, the R takes a negative value;

When the bone conduction earphone is located on the XOZ plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, the R takes a negative value;

Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are respectively the X, Y and Z coordinate values of the analog sound source, L is half of the binaural distance, and R is the nth bone conduction The distance from the earphone to the center position of the earmuff, when the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.

Preferably, the step of calculating, by the distance, the time required for the analog sound source to propagate to the corresponding bone conduction earphone comprises:

Selecting one of the bone conduction earphones as the reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and the calculation is performed according to the formula Δt _ni =(S _n0 -S _i0 )/V Simulating a time difference Δt _{ni of the} sound source propagating to the other bone conduction earphone and propagating to the reference bone conduction earphone, and the time required for the analog sound source to propagate to the corresponding bone conduction earphone is the corresponding time difference;

Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.

Preferably, the step of calculating, according to the original volume and the distance, the volume of the analog sound source to propagate to the corresponding bone conduction earphone comprises:

Calculating the volume P _{n of} the analog sound source propagating to the nth bone conduction earphone according to the formula P _n =P-10log[1/(4πS _n0 ² )];

Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.

A playback control device for a bone conduction earphone is applied to a bone conduction earphone device, the bone conduction earphone device comprising at least two bone conduction earphones, wherein the bone conduction earphones respectively act on the left ear circumference and the right ear circumference, comprising:

An acquisition module, configured to obtain position information and a raw volume of the analog sound source;

a calculation module, configured to calculate, according to the location information, a distance between the analog sound source and the bone conduction earphone, and calculate, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone; Calculating the volume of the simulated sound source to the corresponding volume of the bone conduction earphone;

And a control module, configured to control the bone conduction earphone to play according to the corresponding time and the corresponding volume, wherein the control module is configured to be connected to the bone conduction earphone control.

Preferably, the calculation module is configured to: when the bone conduction earphone is located on an XOY plane of a coordinate axis, according to a formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, the R takes a negative value; when the bone conduction earphone is located on the XOZ plane of the coordinate axis According to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, the R takes a negative value;

Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are the X, Y and Z axis coordinate values of the analog sound source, respectively, L is half of the binaural distance, and R is the nth The bone transmits the distance from the earphone to the center position of the earmuff, and when the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.

Preferably, the calculation module includes a time calculation unit, and the time calculation unit is configured to select one of the bone conduction earphones as a reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is Zero, calculating a time difference Δt _{ni of} the analog sound source propagating to the other bone conduction earphone and propagating to the reference bone conduction earphone according to a formula Δt _ni =(S _n0 -S _i0 )/V, the analog sound source propagation The time required to reach the corresponding bone conduction earphone is the corresponding time difference;

Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.

Preferably, the calculation module includes a volume calculation unit, and the volume calculation unit is configured to calculate, according to the formula P _n =P-10log[1/(4πS _n0 ² )], the analog sound source is propagated to the nth bone The volume P _n at the conduction earphone;

Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.

A bone conduction earphone device comprising at least two bone conduction earphones, a memory and a processor, wherein the memory stores a set of program codes, and the processor is configured to call program code stored in the memory for Do the following:

Obtaining position information and a raw volume of the analog sound source; calculating a distance between the analog sound source and the bone conduction earphone according to the position information, and calculating, by the distance, the analog sound source is propagated to the corresponding bone conduction earphone a time required to calculate a volume of the analog sound source propagating to the corresponding bone conduction earphone according to the original volume and the distance; controlling the bone conduction earphone according to the corresponding time and the corresponding volume Play.

Preferably, the processor calculates, according to the location information, a distance between the analog sound source and the bone conduction earphone, including:

Set the center of the binaural distance to the origin of the XOY coordinate axis; when the bone conduction earphone is located on the XOY plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, the R takes a negative value;

When the bone conduction earphone is located on the XOZ plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, the R takes a negative value;

Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are respectively the X, Y and Z coordinate values of the analog sound source, L is half of the binaural distance, and R is the nth bone conduction The distance from the earphone to the center position of the earmuff, when the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.

Preferably, the processor calculates, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone, including:

Selecting one of the bone conduction earphones as the reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and the calculation is performed according to the formula Δt _ni =(S _n0 -S _i0 )/V Simulating a time difference Δt _ni of the sound source propagating to the other bone conduction earphone and propagating to the reference bone conduction earphone, and the time required for the analog sound source to propagate to the corresponding bone conduction earphone is the corresponding time difference;

Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.

Preferably, the processor calculates, according to the original volume and the distance, a step of the analog sound source propagating to a volume of the corresponding bone conduction earphone, comprising:

Calculating the volume P _{n of} the analog sound source propagating to the nth bone conduction earphone according to the formula P _n =P-10log[1/(4πS _n0 ² )];

Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.

The invention provides a bone conduction earphone playing control method and device. By obtaining position information of an analog sound source, the distance between the analog sound source and the bone conduction earphone and the sound of the analog sound source are propagated to the bone conduction earphone. Time, and by the obtained original sound volume of the analog sound source and the above distance, the volume of the above analog sound source propagated to the bone conduction earphone is calculated. A plurality of the above-mentioned bone conduction earphones are respectively disposed on the left ear circumference and the right ear circumference of the user. Since the distance between each bone conduction earphone and the analog sound source is different, the time and volume of the play may be different. When the bone conduction earphones for the left ear circumference and the right ear circumference are played according to the calculated time and volume, the effect of the real sound can be completely simulated, and the bone conduction earphones closer to the analog sound source are played first. And because the distance is relatively close, the sound attenuation is small, and the playback volume is large; and the bone conduction earphone far away from the analog sound source is played later, and because the distance is long, the sound attenuation is large, and the playback volume is smaller. The above method calculates the sound propagation effect of each bone conduction earphone by simulating the position information of the sound source, and controls the bone conduction earphone to play, can realize the 3D sound effect, and the virtual sound effect of the play has a 3D stereo effect, so that the played content has real sense.

The invention also provides a bone conduction earphone device comprising the above bone conduction earphone playing control device In addition, the device can achieve 3D sound effects, making the bone conduction headphones play more realistic.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can obtain other drawings according to the provided drawings without any creative work.

1 is a flow chart of a specific embodiment of a bone conduction earphone playing control method according to the present invention;

2 is a schematic diagram of a specific embodiment of a bone conduction earphone playing control method according to the present invention;

FIG. 3 is a schematic structural diagram of a bone conduction earphone device according to the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The core of the invention is to provide a bone conduction earphone playing control method and device, which can control the bone conduction earphone to generate a 3D sound effect, so that the playing content has a sense of reality.

Another core of the present invention is to provide a bone conduction earphone device including the above-described bone conduction earphone playback control device, which can realize 3D sound effects.

Please refer to FIG. 1 and FIG. 2 . FIG. 1 is a flowchart of a specific embodiment of a bone conduction earphone playing control method according to the present invention. FIG. 2 is a specific embodiment of a bone conduction earphone playing control method according to the present invention. The schematic.

The invention provides a play control method for a bone conduction earphone, which is mainly applied to a bone conduction earphone device, wherein the bone conduction earphone device comprises at least one bone conduction earphone for the left ear circumference and at least one bone conduction earphone for the right ear circumference ,include:

Step S1: Acquire position information and original volume of the analog sound source.

The above analog sound source is a sound source for the bone conduction earphone device to be simulated, it should be mentioned that The position information of the analog sound source may be the position information of the simulated sound source in the space, such as the relative position relationship with a certain reference piece, or may be specifically the coordinate value of the analog sound source in the space coordinate system. The original volume of the analog sound source is the volume of the sound emitted by the analog sound source at the position of the analog sound source. Since the sound will propagate in all directions and attenuate during the propagation, the original volume of the analog sound source is greater than the received position. The volume. The acquisition action in the above steps can be understood as acquiring a signal carrying the sounding position and volume of the sound that the bone conduction earphone device needs to simulate.

Step S2: calculating the distance between the analog sound source and the bone conduction earphone according to the position information, calculating the time required for the analog sound source to propagate to the corresponding bone conduction earphone through the distance calculation; calculating the analog sound source to the corresponding bone conduction earphone according to the original volume and distance The volume.

In the above steps, the position information is the position information of the analog sound source acquired in step S1, and the bone conduction earphone is the earphone for vibrating sound in the bone conduction earphone device. The distance between the analog sound source and each bone conduction earphone is calculated according to the position information, and the calculation method may be various. One of the methods is to obtain the position information and obtain the position information of the bone conduction earphone, and process the two position information. Calculate the distance between the bone conduction earphone and the analog sound source. The time required for the analog sound source to propagate to each corresponding bone conduction earphone is calculated by the above distance and the simulated sound source propagation speed. Since the distance between the analog sound source and each bone conduction earphone may be different, the time required may also be different.

In addition, according to the original volume of the analog sound source obtained in step S1 and the distance between the analog sound source and each bone conduction earphone, the volume of the original volume of the simulated sound source after being propagated to the corresponding bone conduction earphone can be calculated. Considering that the principle of sound propagation and sound attenuation is mainly related to the propagation medium of sound, in different propagation media, the speed and attenuation of propagation are different. For the calculation of propagation time and volume, it can be adjusted according to the specific situation.

Step S3: controlling the bone conduction earphone to play according to the corresponding time and the corresponding volume.

In the above steps, when the bone conduction headphones are controlled to play, it is necessary to play according to the time corresponding to each bone conduction earphone obtained in step S2 and the corresponding volume. The transmission mode of the signal in the control mode can refer to the existing play control mode for controlling the bone conduction earphone.

It should be mentioned that the bone conduction earphone device usually has two left and right ear cups or brackets for supporting and arranging bone conduction earphones located on the left ear circumference and the right ear circumference.

The play control method for a bone conduction earphone provided by the present invention calculates the distance between the analog sound source and the bone conduction earphone and the time when the sound of the analog sound source propagates to the bone conduction earphone by acquiring the position information of the analog sound source. And calculating by calculating the original volume of the analog sound source and the above distance The volume of the above analog sound source is transmitted to the bone conduction earphone. Finally, the above-mentioned bone conduction earphones are controlled to play according to the corresponding time and the corresponding volume.

After the at least one of the above-mentioned bone conduction earphones is respectively disposed on the left ear circumference and the right ear circumference of the user, since the distance between each bone conduction earphone and the analog sound source may be different, the time and volume of the play may also be different. When the bone conduction earphones for the left ear circumference and the right ear circumference are played according to the calculated time and volume, the effect of the real sound can be completely simulated, and the bone conduction earphones closer to the analog sound source are played first. And because the distance is relatively close, the sound attenuation is small, and the playback volume is large; and the bone conduction earphone far away from the analog sound source is played later, and because the distance is long, the sound attenuation is large, and the playback volume is smaller.

The above method calculates the sound propagation effect of each bone conduction earphone by simulating the position information of the sound source, and controls the bone conduction earphone to play, can realize the 3D sound effect, and the virtual sound effect of the play has a 3D stereo effect, so that the played content has real sense.

It should be mentioned that the analog sound source provided in the present application is a hypothetical sound source, so the position of the analog sound source can be obtained from a preset program or controller. For example, it is necessary to simulate the sound emitted from the front of the bone conduction earphone device, and the analog sound source is located directly in front of the bone conduction earphone.

In a specific embodiment of the present invention, the step of calculating the distance between the analog sound source and the bone conduction earphone according to the position information in the step S2 may specifically include:

Step S20: Acquire position information of the bone conduction earphone, and calculate a distance between the analog sound source and the bone conduction earphone according to the position information of the analog sound source and the position information of the bone conduction earphone.

In the above step S20, the spatial coordinate system may be preset, and the position information of the bone conduction earphone may be acquired, and the position information may be a coordinate value of the space coordinate system or the like. According to the position information of the analog sound source and the position information of each bone conduction earphone, the distance between each bone conduction earphone and the analog sound source is calculated respectively.

In this embodiment, by obtaining the position information of each bone conduction earphone separately, and calculating or processing the position information and the position information of the analog sound source, the distance between each bone conduction earphone and the analog sound source can be obtained, and the method obtains the obtained method. The distance is accurate and reliable, and has good adaptability for the calculation and control of the bone conduction earphone device with adjustable relative position.

On the other hand, there are many location information that need to be obtained in the above steps, which may have a certain complexity in the acquisition process.

In another specific embodiment provided by the present invention, there is a certain specificity for the relative position of the bone conduction earphone in the device, wherein the distance between the analog sound source and the bone conduction earphone is calculated according to the position information. The step of leaving can be calculated by setting a fixed value, including:

Step S21: setting the center of the binaural distance to the origin of the XOY coordinate axis.

It should be mentioned that the bone conduction earphone device is usually provided with two ear cups, which are respectively used to carry the bone conduction earphones on both sides, and the ear cups are usually arranged at the ear, and the two ear cups are connected in the center. The point is the center of the binaural distance, and the center of the binaural distance is set as the coordinate origin. If the distance between the ears is L, the distance between the ears and the origin of the coordinate is half of the binaural distance, that is, 0.5L.

Step S22: When the bone conduction earphone is located on the XOY plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, R takes a negative value;

When the bone conduction earphone is on the XOZ plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, R takes a negative value;

Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are the X, Y and Z coordinate values of the analog sound source, respectively, L is half of the binaural distance, and R is the nth bone conduction earphone to The distance between the center positions of the ear cups, when the X coordinate of the nth bone conduction earphone is negative, L takes a negative value.

In the above steps, the bone conduction earphones in different positions in the space coordinate system are classified. Specifically, reference may be made to FIG. 2, in which eight bone conduction earphones are taken as an example, respectively, labeled 1 to 8, according to The position in the space coordinate system can specifically determine the calculation formula of the distance between each bone conduction earphone and the analog sound source S _n , where n corresponds to the reference numeral in FIG. 2 . For example, the distance corresponding to the number 1 bone conduction earphone in Figure 2

The same is available:

In this embodiment, by setting the midpoint of the connection line of the two ears as the origin of the space coordinate system, the position of each earphone can be obtained according to the relationship with the origin, and the calculation method is relatively simple, and the position of the earphone is not required to be acquired, and The method is especially suitable for the distance between the center of each earphone and the earmuff in the device and the bit Set to a fixed situation.

It should be noted that, in the above embodiment, setting the number of bone conduction earphones to eight is to consider the arrangement of the earphones in the vicinity of the ears. This setting angle and manner can simulate the sound sources at various angles. Of course, the number and angle of arrangement of the bone conduction earphones are not limited to the above.

In a specific embodiment provided by the present invention, the step of calculating the time required for the analog sound source to propagate to the corresponding bone conduction earphone by the distance calculation may specifically include:

Step S23: selecting a bone conduction earphone as the reference bone conduction earphone, taking the time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and calculating the analog sound source propagation according to the formula Δt _ni =(S _n0 -S _i0 )/V The time difference Δt _ni between the other bone conduction earphones and the reference bone conduction earphones, and the time required for the analog sound source to propagate to the corresponding bone conduction earphones is a corresponding time difference;

Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is the propagation speed of the analog sound source.

In the above method, the reference bone conduction earphone can be selected to select a bone conduction earphone closest to the analog sound source, and calculate the time difference between all the other earphones and the reference bone conduction earphone.

Optionally, the calculation of the time may not be limited to the above case, and the time when the sound is acquired by each earphone may be separately calculated, so that each earphone is separately timed and controlled to play. The above step S23 obtains the time difference of playing each earphone. The advantage of this method is that it is not necessary to select multiple timing programs or devices to time each earphone separately.

In another embodiment provided by the present invention, the step of calculating the volume of the simulated sound source to the corresponding bone conduction earphone according to the original volume and the distance may specifically include:

Step S24: calculating the volume P _{n of the} analog sound source propagating to the nth bone conduction earphone according to the formula P _n = P-10log [1/(4πS _n0 ² )];

Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.

In this embodiment, the calculation method for the sound attenuation is determined by the original volume and the propagation pitch, and the propagation pitch is the distance between the analog sound source and the nth bone conduction earphone. It can be seen that the calculation method is not the only calculation method, and the calculation method of the sound attenuation can be specifically adjusted according to the propagation medium or the like.

The playback control method of the bone conduction earphone provided by each of the above embodiments obtains the position of the analog sound source that needs to be simulated, and calculates the distance between the analog sound source and each bone conduction earphone, and finally obtains each The bone conduction earphone should play the time and volume, so that the user can get the real 3D sound experience.

The invention also provides a play control device for a bone conduction earphone, the play control device of the bone conduction earphone is mainly used in a bone conduction earphone device, the bone conduction earphone device comprises at least two bone conduction earphones, and the bone conduction earphones respectively act on the left side The ear circumference and the right ear circumference, the play control device of the bone conduction earphone mainly comprises an acquisition module, a calculation module and a control module.

The acquisition module is used to obtain the position information and the original volume of the analog sound source.

The calculation module is configured to calculate the distance between the analog sound source and the bone conduction earphone according to the position information, calculate the time required for the analog sound source to propagate to the corresponding bone conduction earphone through the distance calculation; calculate the simulated sound source to propagate to the corresponding bone according to the original volume and distance The volume of the conductive headphones.

The control module is configured to control the bone conduction earphone to play according to the corresponding time and the corresponding volume, and the control module is configured to be connected with the bone conduction earphone control.

The acquisition module is connected to the calculation module, and the calculation module is connected to the control module. It should be mentioned that the connection may refer to an electrical connection or a signal connection.

The playback control device of the above-mentioned bone conduction earphone is mainly used for implementing the above-mentioned bone conduction earphone playback control method. It can be seen that the acquisition module correspondingly completes the position information of the analog sound source and the acquisition of the original volume in the above step S1, and the calculation module correspondingly completes the above steps. In S2, the distance, time and volume are calculated, and the control module controls the bone conduction earphone by calculating the result of the module.

In a specific embodiment provided by the present invention, the calculating module is configured to set the center of the binaural distance to be the origin of the XOY coordinate axis, and when the bone conduction earphone is located on the XOY plane of the coordinate axis, according to the formula

Calculating the distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, R takes a negative value; when the bone conduction earphone is located on the XOZ plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, R takes a negative value;

Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are the X, Y and Z coordinate values of the analog sound source, respectively, L is half of the binaural distance, and R is the nth bone conduction earphone to The distance between the center positions of the ear cups, when the X coordinate of the nth bone conduction earphone is negative, L takes a negative value.

For the specific calculation process, reference may be made to the above steps S21 and S22, and details are not described herein again.

Optionally, a sensor for the bone conduction earphone may be set in the calculation module for obtaining the spatial position of the bone conduction earphone, refer to step S20, and the space position of the bone conduction earphone and the spatial position of the analog sound source may be calculated. The spacing between the two.

Based on any of the above embodiments, the calculation module may include a time calculation unit, and the time calculation unit is configured to select a bone conduction earphone as the reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is zero. According to the formula Δt _ni =(S _n0 -S _i0 )/V, the time difference Δt _{ni of the} analog sound source propagating to other bone conduction earphones and the propagation to the reference bone conduction earphone is calculated, and the time required for the analog sound source to propagate to the bone conduction earphone is corresponding. Time difference; where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is the propagation of the analog sound source. speed. The time calculation unit may be connected to the control module for transmitting the result to the control module. For details, refer to step S23, and details are not described herein again.

In the bone conduction earphone playing control device provided by the present invention, the calculation module may further include a volume calculation unit for calculating the analog sound source according to the formula P _n =P-10log[1/(4πS _n0 ² )] The volume P _n propagated to the nth bone conduction earphone; wherein n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone. This embodiment corresponds to the above step S24, and the specific content can refer to step S24.

In addition to the playback control method and apparatus for the bone conduction earphone provided by the above embodiments, the present invention also provides a bone conduction earphone device. As shown in FIG. 3, the bone conduction earphone device includes: at least one processor 31, such as a CPU. At least one communication bus 32, a memory 33, and at least two bone conduction earphones 34; the communication bus 32 is for implementing connection communication between the components; the processor 31 can perform an execution action of the playback control device of the bone conduction earphone described above; 33 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory. A set of program codes is stored in the memory 33, and the processor 31 is configured to call the program code stored in the memory 33 to perform the following operations:

Obtaining position information and a raw volume of the analog sound source; calculating a distance between the simulated sound source and the bone conduction earphone 34 according to the position information, and calculating, by the distance, the analog sound source is propagated to the corresponding bone conduction The time required by the earphone 34; calculating the volume of the analog sound source propagating to the corresponding bone conduction earphone according to the original volume and the distance; controlling the bone conduction earphone 34 according to the corresponding time and corresponding The volume is played.

Preferably, the processor 31 calculates a distance between the analog sound source and the bone conduction earphone 34 according to the position information, including:

Setting the center of the binaural distance to the origin of the XOY coordinate axis; when the bone conduction earphone 34 is located on the XOY plane of the coordinate axis, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earpiece 34, wherein when the Y coordinate of the bone conduction earphone 34 is negative, the R takes a negative value; when the bone conduction earphone 34 is located on the coordinate axis On the XOZ plane, according to the formula

Calculating a distance S _n0 between the simulated sound source and the bone conduction earpiece 34, wherein when the Z coordinate of the bone conduction earphone 34 is negative, the R takes a negative value; wherein n is the bone conduction earphone 34 The labels, x ₀ , y ₀ , and z ₀ are the X, Y, and Z coordinate values of the analog sound source, respectively, L is half of the binaural distance, and R is the distance from the nth bone conduction earphone to the center of the earmuff. When the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.

Preferably, the processor 31 calculates, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone, including:

Selecting one of the bone conduction earphones as the reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and the calculation is performed according to the formula Δt _ni =(S _n0 -S _i0 )/V Simulating a time difference Δt _ni of the sound source propagating to the other bone conduction earphone and propagating to the reference bone conduction earphone, and the time required for the analog sound source to propagate to the corresponding bone conduction earphone is the corresponding time difference;

Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.

Preferably, the processor 31 calculates, according to the original volume and the distance, a step of the analog sound source propagating to a volume of the corresponding bone conduction earphone, comprising:

Calculating a volume P _{n of} the analog sound source propagating to the nth bone conduction earphone according to a formula P _n =P-10log[1/(4πS _n0 ² )]; wherein n is a label of the bone conduction earphone P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.

The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.

The playback control method and device for the bone conduction earphone provided by the present invention and the bone conduction earphone device are described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, and the description of the above embodiments is only to assist in understanding the method of the present invention and its core idea. It should be noted that those skilled in the art can make various modifications and changes to the present invention without departing from the spirit and scope of the invention.

Claims (13)

1. A play control method for a bone conduction earphone, applied to a bone conduction earphone device, the bone conduction earphone device comprising at least one bone conduction earphone for a left ear circumference and at least one bone conduction earphone for a right ear circumference, characteristics thereof Included in:

   Obtaining the position information and the original volume of the analog sound source;

   Calculating, according to the location information, a distance between the analog sound source and the bone conduction earphone, and calculating, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone; according to the original volume and location Calculating the volume of the simulated sound source to the corresponding volume of the bone conduction earphone;

   The bone conduction earphone is controlled to play according to the corresponding time and the corresponding volume.
2. The method for controlling the playback of the bone conduction earphone according to claim 1, wherein the calculating the distance between the analog sound source and the bone conduction earphone according to the position information comprises:

   Obtaining position information of the bone conduction earphone, and calculating a distance between the analog sound source and the bone conduction earphone according to position information of the analog sound source and position information of the bone conduction earphone.
3. The method for controlling the playback of the bone conduction earphone according to claim 1, wherein the calculating the distance between the analog sound source and the bone conduction earphone according to the position information comprises:

   Set the center of the binaural distance to the origin of the XOY coordinate axis;

   When the bone conduction earphone is located on the XOY plane of the coordinate axis, according to the formula

   

   Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, the R takes a negative value;

   When the bone conduction earphone is located on the XOZ plane of the coordinate axis, according to the formula

   

   Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, the R takes a negative value;

   Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are respectively the X, Y and Z coordinate values of the analog sound source, L is half of the binaural distance, and R is the nth bone conduction The distance from the earphone to the center position of the earmuff, when the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.
4. The method for controlling the playback of a bone conduction earphone according to any one of claims 1 to 3, wherein the calculating the analog sound source by the distance to propagate to the corresponding bone conduction earphone The steps required for the time, including:

   Selecting one of the bone conduction earphones as the reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and the calculation is performed according to the formula Δt _ni =(S _n0 -S _i0 )/V Simulating a time difference Δt _ni of the sound source propagating to the other bone conduction earphone and propagating to the reference bone conduction earphone, and the time required for the analog sound source to propagate to the corresponding bone conduction earphone is the corresponding time difference;

   Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.
5. The method for controlling the playback of a bone conduction earphone according to claim 4, wherein the step of calculating the volume of the analog sound source propagating to the corresponding bone conduction earphone according to the original volume and the distance is include:

   Calculating the volume P _{n of} the analog sound source propagating to the nth bone conduction earphone according to the formula P _n =P-10log[1/(4πS _n0 ² )];

   Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.
6. A play control device for a bone conduction earphone is applied to a bone conduction earphone device, the bone conduction earphone device comprising at least two bone conduction earphones, wherein the bone conduction earphones respectively act on a left ear circumference and a right ear circumference, wherein ,include:

   An acquisition module, configured to obtain position information and a raw volume of the analog sound source;

   a calculation module, configured to calculate, according to the location information, a distance between the analog sound source and the bone conduction earphone, and calculate, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone; Calculating the volume of the simulated sound source to the corresponding volume of the bone conduction earphone;

   And a control module, configured to control the bone conduction earphone to play according to the corresponding time and the corresponding volume, wherein the control module is configured to be connected to the bone conduction earphone control.
7. The playback control device for a bone conduction earphone according to claim 6, wherein the calculation module is configured to: when the bone conduction earphone is located on an XOY plane of a coordinate axis, according to a formula

   

   Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, the R takes a negative value; when the bone conduction earphone is located on the XOZ plane of the coordinate axis According to the formula

   

   Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, the R takes a negative value;

   Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are the X, Y and Z axis coordinate values of the analog sound source, respectively, L is half of the binaural distance, and R is the nth The bone transmits the distance from the earphone to the center position of the earmuff, and when the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.
8. The playback control device for a bone conduction earphone according to claim 6 or 7, wherein the calculation module comprises a time calculation unit, and the time calculation unit is configured to select one of the bone conduction earphones as a reference bone conduction earphone. The time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and the analog sound source is propagated to other bone conduction earphones and propagation according to the formula Δt _ni =(S _n0 -S _i0 )/V a time difference Δt _ni to the reference bone conduction earphone, and a time required for the analog sound source to propagate to the corresponding bone conduction earphone is a corresponding time difference;

   Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.
9. A playback control apparatus for a bone conduction earphone according to claim 8, wherein said calculation module includes a volume calculation unit for using a parameter P _n = P-10log [1/(4πS _n0 ²⁾ ] calculating a volume P _n at which the analog sound source propagates to the nth bone conduction earphone;

   Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.
10. A bone conduction earphone device comprising at least two bone conduction earphones, further comprising a processor and a memory, wherein the memory stores a set of program codes, and the processor is configured to call the memory storage Program code for doing the following:

    Obtaining the position information and the original volume of the analog sound source;

    Calculating, according to the location information, a distance between the analog sound source and the bone conduction earphone, and calculating, by the distance, a time required for the analog sound source to propagate to the corresponding bone conduction earphone; according to the original volume and location Calculating the volume of the simulated sound source to the corresponding volume of the bone conduction earphone;

    The bone conduction earphone is controlled to play according to the corresponding time and the corresponding volume.
11. The bone conduction earphone device according to claim 10, wherein said processor root And calculating, according to the location information, a distance between the analog sound source and the bone conduction earphone, comprising:

    Set the center of the binaural distance to the origin of the XOY coordinate axis;

    When the bone conduction earphone is located on the XOY plane of the coordinate axis, according to the formula

    

    Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Y coordinate of the bone conduction earphone is negative, the R takes a negative value;

    When the bone conduction earphone is located on the XOZ plane of the coordinate axis, according to the formula

    

    Calculating a distance S _n0 between the simulated sound source and the bone conduction earphone, wherein when the Z coordinate of the bone conduction earphone is negative, the R takes a negative value;

    Where n is the label of the bone conduction earphone, x ₀ , y ₀ , z ₀ are respectively the X, Y and Z coordinate values of the analog sound source, L is half of the binaural distance, and R is the nth bone conduction The distance from the earphone to the center position of the earmuff, when the X coordinate of the nth bone conduction earphone is negative, the L takes a negative value.
12. The bone conduction earphone device according to claim 10 or 11, wherein

    And the step of calculating, by the processor, the time required for the analog sound source to propagate to the corresponding bone conduction earphone, including:

    Selecting one of the bone conduction earphones as the reference bone conduction earphone, and the time required for the analog sound source to propagate to the reference bone conduction earphone is zero, and the calculation is performed according to the formula Δt _ni =(S _n0 -S _i0 )/V other analog audio source to propagate the bone conduction headset with a bone conduction to the reference propagation time difference headset Δt _ni, to the analog audio source, the propagation time corresponding to the bone conduction headset required time corresponding to the difference;

    Where n is the label of the bone conduction earphone, S _n0 is the distance between the analog sound source and the nth bone conduction earphone, and S _i0 is the distance between the analog sound source and the reference bone conduction earphone, and V is The propagation speed of the analog sound source.
13. The bone conduction earphone device according to claim 12, wherein

    The step of calculating, by the processor, the volume of the analog sound source to be transmitted to the corresponding bone conduction earphone according to the original volume and the distance, including:

    Calculating the volume P _{n of} the analog sound source propagating to the nth bone conduction earphone according to the formula P _n =P-10log[1/(4πS _n0 ² )];

    Where n is the label of the bone conduction earphone, P is the original volume of the analog sound source, and _Sn0 is the distance between the analog sound source and the nth bone conduction earphone.

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