CN106686520A - Multi-channel audio system capable of tracking user and equipment with multi-channel audio system - Google Patents
Multi-channel audio system capable of tracking user and equipment with multi-channel audio system Download PDFInfo
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- CN106686520A CN106686520A CN201710001369.8A CN201710001369A CN106686520A CN 106686520 A CN106686520 A CN 106686520A CN 201710001369 A CN201710001369 A CN 201710001369A CN 106686520 A CN106686520 A CN 106686520A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
- H04S7/30—Control circuits for electronic adaptation of the sound field
- H04S7/302—Electronic adaptation of stereophonic sound system to listener position or orientation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
Abstract
The invention discloses a multi-channel audio system capable of tracking a user and equipment with the multi-channel audio system. The multi-channel audio system comprises multiple loudspeakers, an image sensor, a sound sensor and a controller; a predetermined first relative position is located between the image sensor and the sound sensor, and the controller comprises a loudspeaker position detection unit, a user position detection unit, a position fusion unit, a delay compensation calculating unit and a delay adjusting unit, wherein the loudspeaker position detection unit is used for determining second relative positions of the loudspeakers on the basis of predetermined audio signals which are detected by the sound sensor and come from the loudspeakers, the user position detection unit is used for determining a third relative position of the user on the basis of a user image detected by the image sensor, the position fusion unit is used for fusing the first relative position, the second relative positions and the third relative position to determine a fourth relative position of the user to the loudspeakers, the delay compensation calculating unit is used for calculating delay compensation values of the loudspeakers on the basis of the fourth relative position, and the delay adjusting unit is used for adjusting the phase positions of audio signals of the loudspeakers according to the delay compensation values.
Description
Technical field
Present invention relates in general to sound reproduction, more specifically it relates to a kind of multi-channel audio system, it can track use
Family, so as to persistently provide optimal hearing effect for user.
Background technology
Typical multi-channel audio system, including 2.0 systems, 2.1 systems, 5.1 systems, 6.1 systems, 7.1 systems etc., all
Stereophonic effect can be provided the user using its multiple sound channel.However, in order to realize optimal hearing effect, for sound equipment
System is placed with certain requirement.
Figure 1A illustrates putting for 2.0 or 2.1 sound systems, and Figure 1B illustrates putting for 5.1 sound systems.For 2.0 or 2.1
System, as shown in Figure 1A, left channel loudspeaker (or audio amplifier) 101, right channel loudspeaker 102 and the three of user 110 form equilateral
Triangle, and left channel loudspeaker 101 and the user oriented 110 of right channel loudspeaker 102.Because the sensing of subwoofer
Property it is not strong, so it is put can not show in figure relatively flexibly.For 5.1 systems, as shown in Figure 1B, except front left channel
Speaker 101, right front channels speaker 102 and the three of user 110 are formed outside equilateral triangle, and center loudspeaker 103 is placed in
The dead ahead of user 110, and center loudspeaker 103 is equal to the length of side of aforementioned equilateral triangle with a distance from user 110.Additionally,
Left subsequent channel speaker 104 and rear right channel speaker 105 are respectively placed in the left back and right back of user 110.Equally, Figure 1B
In eliminate subwoofer.In addition to 2.0 systems, 2.1 systems and 5.1 systems, for 6.1 systems, 7.1 systems etc.
Having put accordingly requirement.When sound system is put according to such requirement, the position that user 110 is located is commonly referred to as " emperor
Throne ", i.e., most preferably listen phoneme, and in the position optimal audition experience can be obtained.
It can be seen that, in order to realize optimal hearing effect, need the position for performing complexity to sound system to put.Even if additionally,
As requested putting speaker, emperor position region be also it is limited, when user not in emperor position region when, or when user because
When moving and leaving emperor position, then audio quality still can be caused because of the interference between sound to be greatly lowered.
Application for a patent for invention CN201510112555.X proposes a kind of audio reproduction technology synthesized based on sound field ripple, its
According to the frequency and wavelength of audio frequency every audio signal all the way is carried out to divide coding and uniform treatment, and closed Jing after diffraction process
Into output, to avoid the interference between different speakers, so as to realize the improvement of the audio quality outside emperor position.Although the party
Case can to a certain extent by weaken interfere to improve emperor position region beyond hearing effect, but its still suffer from it is some
Problem.First, the frequency dividing of audio signal is encoded, diffraction and synthesis are processed etc. inevitably affects fidelity, is caused
Audio is deteriorated.In addition, although the program can to a certain extent improve the audio of the exterior domain of emperor position, but it still can not
Realize the hearing effect suitable with emperor position.
Accordingly, it is desired to provide a kind of sound effect system, it can neatly be put, even and if user in diverse location,
Such as position outside emperor position, it can also provide the user optimal hearing effect.
The content of the invention
One aspect of the present invention is to provide a kind of multi-channel audio system, and it can track user, from regardless of whether with
Whether family can provide the user optimal audition impression in emperor position.
Another aspect of the present invention also resides in a kind of multi-channel audio system of offer, and it can adjust prolonging for each speaker
Slow and gain, such that it is able to flexibly be put to each speaker.
According to an exemplary embodiment, a kind of multi-channel audio system may include multiple speakers, imageing sensor, sound
Sensor and controller, have the first predetermined relative position, institute between described image sensor and the sound transducer
Stating controller includes：Loudspeaker position detector unit, be configured to that the sound transducer detects from the plurality of
The predetermined audio signal of speaker is determining second relative position of the plurality of speaker relative to the sound transducer；With
Family position detection unit, is configured to user images that described image sensor detects to determine user relative to the figure
As the third phase of sensor is to position；Co-factor propagation unit, is configured to fusion first relative position, the described second relative position
Put and the third phase is to position, so that it is determined that fourth relative position of the user relative to each speaker；Delay compensation meter
Unit is calculated, is configured to the 4th relative position to calculate the delay compensation value of the audio signal for each speaker；
And postpone adjustment unit, the phase place of the audio signal for being configured to adjust each speaker according to the delay compensation value.
In one example, described image sensor and the sound transducer are arranged in the plurality of speaker
On, so as to have the second predetermined relative position between the sound transducer and one speaker.
In one example, the sound transducer includes microphone array, and the loudspeaker position detector unit is configured to
Direction of each speaker relative to the microphone array is determined based on sound localization, and is sent based on each speaker
Predetermined audio signal and the microphone array receive the time difference between the audio signal to determine each speaker phase
For the distance of the microphone array.
In one example, the controller also includes：Gain compensation computing unit, is configured to the described 4th relative position
Put to calculate the gain compensation value of the audio signal for each speaker；And gain adjustment unit, it is configured to according to described
Gain compensation value is adjusting the gain of the audio signal of each speaker.
The another exemplary embodiment of the present invention provides a kind of equipment including above-mentioned multi-channel audio system.The equipment
Can be television set or automobile etc..
The another exemplary embodiment of the present invention provides a kind of method that sound is reappeared using multi-channel audio system, institute
Multi-channel audio system is stated including multiple speakers, methods described includes：Receive what each speaker sent from sound transducer
Predetermined audio signal, and the second relative position of each speaker is determined based on received predetermined audio signal；From figure
As sensor receive user image, and determine the third phase of user to position based on received user images；To described
Second relative position, the third phase are to the first relative position predetermined between position and sound transducer and imageing sensor
Put and merged, to determine fourth relative position of the user relative to each sensor；And based on the 4th relative position
It is determined that the delay compensation value of the audio signal for each speaker, and raised one's voice adjusting each according to the delay compensation value
The phase place of the audio signal of device.
In one example, described image sensor and the sound transducer are arranged in the plurality of speaker
On, so as to have the second predetermined relative position between the sound transducer and one speaker.
In one example, determining the second relative position of each speaker includes：Determine each based on sound localization to raise
Sound device and sends predetermined audio signal and the sound and passes relative to the direction of the sound transducer based on each speaker
Sensor receives the time difference between the audio signal to determine distance of each speaker relative to the sound transducer.
In one example, methods described also includes：The sound for each speaker is determined based on the 4th relative position
The gain compensation value of frequency signal, and according to the gain compensation value adjusting the gain of the audio signal of each speaker.
The another exemplary embodiment of the present invention provides a kind of computer program, including computer program instructions, institute
Stating computer program instructions makes the computing device said method when being run by processor.
Description of the drawings
Figure 1A illustrates the schematic putting position figure of 2.0 or 2.1 traditional sound systems.
Figure 1B illustrates the schematic putting position figure of 5.1 traditional sound systems.
Fig. 2 illustrates the schematic diagram of the multi-channel audio system according to an exemplary embodiment of the invention.
Fig. 3 illustrates the functional block diagram of the controller of the Fig. 2 according to an exemplary embodiment of the invention.
Fig. 4 illustrates the flow chart of sound reproduction process according to an embodiment of the invention.
Fig. 5 illustrates the example of the equipment with sound system according to an embodiment of the invention.
Fig. 6 illustrates the example of another equipment with sound system according to an embodiment of the invention.
Specific embodiment
The exemplary embodiment of the present invention is described below with reference to accompanying drawings.
Fig. 2 illustrates the schematic diagram of the multi-channel audio system 200 according to an exemplary embodiment of the invention.Although figure
2 illustrate only two speakers, but should be understood that the principle of the present invention also may be used on having more by explained below
The multi-channel audio system of multi-loudspeaker, such as but not limited to 2.1 systems, 5.1 systems, 6.1 systems, 7.1 systems etc..
As shown in Fig. 2 multi-channel audio system 200 includes the first speaker 210 and the second speaker 220.Typically, example
Such as in 2.0 systems, in the first speaker 210 and the second speaker 220 can be left channel loudspeaker, and another can
Think right channel loudspeaker.Two speakers 210 and 220 may be coupled to controller 230 to be controlled by.Although Fig. 2 is illustrated
Controller 230 is embodied as single unit, it will be understood that, controller 230 can also be implemented in multi-channel audio system 200
In any one speaker, including subwoofer (if any), or can also be arranged on what is be connected with speaker
In equipment, power amplifier, computer etc..
With continued reference to Fig. 2, multi-channel audio system 200 also includes sound transducer 201 and imageing sensor 202.Sound
Sensor 201 is preferably microphone array, and it includes the multiple mikes arranged by predetermined pattern.Imageing sensor 202 can be with
It is that the shooting of monocular cam, binocular camera or more mesh is first-class.Preferably, imageing sensor 202 can be binocular camera shooting
Head.
In the embodiment shown in Figure 2, sound transducer 201 and imageing sensor 202 have been all disposed within the first speaker
On 210, therefore for convenience, the first speaker 210 can be referred to as main loudspeaker, by other speakers, such as second
Speaker 220, referred to as secondary speaker.However, it is understood that main loudspeaker can be any one in multi-channel audio system 200
Speaker, including but not limited to subwoofer.Preferably, main loudspeaker can be able to easily see raising one's voice for user
Device.It should also be understood that sound transducer 201 and imageing sensor 202 also may be provided in other equipment, or for example it is embodied as list
Only module.Sound transducer 201 and imageing sensor 202 are preferably provided in same equipment or module so that therebetween
With known predetermined phase position.As being appreciated that by explained below, from being easy to for raising level of integrated system
For the angle for using, it is preferred that sound transducer 201 and imageing sensor 202 are arranged on some speaker.
Fig. 3 illustrates the functional block diagram of the controller 230 of the Fig. 2 according to an exemplary embodiment of the invention.As shown in figure 3,
Controller 230 may include loudspeaker position detector unit 231, customer location detector unit 232, Co-factor propagation unit 233, delay
Compensation calculation unit 234, gain compensation computing unit 235, delay adjustment unit 236 and gain adjustment unit 237.Below will ginseng
The operation of all parts in controller 230 is described according to Fig. 2 and 3.
Loudspeaker position detector unit 231 can be used for the position of each speaker for determining sound system 200, it is concrete and
Speech, speaker relative to sound transducer microphone array 201 in other words position, including distance and direction.Specifically, such as
Shown in Fig. 2, each speaker 210,220 of sound system 200 can be controlled to send predetermined audio signal, for example, make a reservation for
The audio signal of frequency and waveform, and sound transducer 201, such as microphone array, can receive each speaker and send
The audio signal.Loudspeaker position detector unit 231 can be processed the audio signal that microphone array is received, base
The direction of each speaker relative to microphone array of sound source is determined as in sound localization technology.Based on microphone array
Sound localization method include steerable beam formed technology, High-Resolution Spectral Estimation technology, the skill based on sound wave reaching time-difference
Art etc., is used equally in the present invention determine direction of each speaker relative to microphone array.During being reached based on sound wave
Between difference technology as a example by, its principle be determine from sound source sound wave reach a pair of mikes time difference, it corresponds to one
Hyperboloid, using multipair mike multiple hyperboloids are can determine that, their common factor is exactly the position that sound source is located at.The present invention
People has found, especially for far field system, the error of the sound source distance determined based on microphone array and sound source location technology compared with
Greatly, therefore in an embodiment of the present invention, merely with sound localization technology determining each speaker relative to microphone array
Direction.
Additionally, loudspeaker position detector unit 231 is also connect by determining that speaker sends audio signal with microphone array
Receive the time difference of audio signal to determine distance of the speaker away from microphone array.The electricity in speaker and microphone array
The speed of signal can consider much larger than the velocity of sound, therefore, it is possible to be readily determined time and Mike that speaker sends audio signal
To the time of audio signal, the difference of the two is multiplied by SVEL to wind array received, you can obtain speaker away from microphone array it
Between distance.So as to loudspeaker position detector unit 231 can determine position of each speaker relative to microphone array 201
Put, including direction and distance.
It should be noted that when as shown in Fig. 2 microphone array 201 is arranged on one of speaker such as main loudspeaker 210,
Main loudspeaker 210 can be fixed and known relative to the position of microphone array, it will therefore be appreciated that raising in above-mentioned utilization
When sound device position detection unit 231 determines the position of each speaker, it is convenient to omit the step related to main loudspeaker 210.
Customer location detector unit 232 can be used to detect the position of user that specifically, user is relative to imageing sensor
202 position, including direction and distance.As shown in Fig. 2 imageing sensor 202, preferably binocular camera, can catch use
The image at family 110.Customer location detector unit 232 can receive the view data from imageing sensor 202, and utilize image
Technology of identification, such as recognition of face, head-shoulder contour identification, human body contour outline identification etc. are identifying user, and further basis
Image information determines the direction at user place and distance.At some in particular cases, for example when multiple users are identified, user
The centre position of such as multiple users can be defined as customer location by position detection unit 232, or only be recognized according to face
The position of register user；When any user is not identified, customer location detector unit 232 can using default location as with
Family position, etc..These strategies can determine according to actually used scene.
As described above, when loudspeaker position detector unit 231 determines each speaker relative to sound transducer 201
Position (hereinafter referred to as the second relative position), and customer location detector unit 232 determines user relative to imageing sensor
After 202 position (hereinafter referred to as third phase is to position), Co-factor propagation unit 233 can melt to these position datas
Close.Relative position specifically, known to Co-factor propagation unit 233 between sound transducer 201 and imageing sensor 202 (under
Text is referred to as the first relative position), such as sound transducer 201 and imageing sensor 202 can be embodied in same module or
It is implemented on same speaker, therefore first relative position is known and fixed.Therefore, based on sound transducer 201
Second relative position of the first relative position, each speaker and imageing sensor 202 between relative to sound transducer 201
Put and user relative to imageing sensor 202 third phase to position, Co-factor propagation unit 233 can determine that user is relative
In the relative position (hereinafter referred to as the 4th relative position) of each speaker, such as the user 110 shown in Fig. 2 raises relative to first
Sound device 210 apart from R1 and direction a and user 110 relative to the second speaker 220 apart from R2 and direction b.Additionally, position
Integrated unit 233 is put it may also be determined that the relative distance and direction between each speaker, such as the first speaker 210 and second
The distance between speaker 220 R3 and direction c.In a further exemplary embodiment, Co-factor propagation unit 233 can also only determine
User relative to each speaker distance, i.e. the 4th relative position only include user relative to each speaker distance.
After the 4th relative position is determined, you can by delay compensation computing unit 234 and gain compensation computing unit
235 delay compensation values and gain compensation value for calculating the audio signal for each speaker respectively.As shown in Fig. 2 user 110
The first speaker of distance 210 apart from R1 likely differ from the second speaker of user distance 220 apart from R2, cause two to raise one's voice
The sound wave that device is simultaneously emitted by arrives at user in the different time, and arrives at the sound wave of user and have different due to distance difference
Strength retrogression, the audition for causing user experiences variation.In an embodiment of the present invention, made by delay compensation and gain compensation
The sound wave for obtaining different speakers reaches user and with identical gain simultaneously.
In one example, delay compensation computing unit 234 can obtain distance of each speaker relative to user, it is determined that
Ultimate range therein, then adjust each speaker postpone so that the sound wave of all speakers arrive at time of user with
Ultimate range speaker is identical.For example, the example for Fig. 2, the distance users 110 of the second speaker 220 apart from R2 more than the
The distance users 110 of one speaker 210 apart from R1, then delay compensation computing unit 234 can be calculated according to equation 1 below
For the delay compensation value of the first speaker 210.
Δ=ROUND (Fs (R2-R1)/v) formula 1
Wherein, v represents the velocity of sound, and Fs represents sample frequency, and ROUND is the function of the integer for being rounded up to nearest.From public affairs
Formula 1 is as can be seen that Δ represents that the sound wave of the second speaker 220 arrives at the time of user 110 and supports than the sound wave of the first speaker 210
Up to the sampling number of the time delay of user 110.
Then, postponing adjustment unit 236 can adjust the sound of each speaker according to the delay compensation value Δ for being calculated
The phase place of frequency signal.For example, the example for Fig. 2, then by the phase delay delta of the audio signal of the first speaker 210 so that
It arrives at user simultaneously with the audio signal of the second speaker 210.For the second speaker 220, then because it has the latest
The sound wave arrival time, then without adjustment.
Additionally, gain compensation computing unit 235 can obtain distance of each speaker relative to user, determine therein
Minimum range, then adjusts the gain of each speaker so that the intensity when sound wave of all speakers arrives at user each other one
Intensity when causing, and user is arrived at corresponding to the sound wave of the speaker of minimum range.For example, the example for Fig. 2, first raises
The distance users 110 of sound device 210 apart from R1 less than the second speaker 220 distance users 110 apart from R2, then gain compensation is calculated
Unit 235 can be calculated for the gain compensation value of the second speaker 220 according to equation 2 below.
G=ea(R2-R1)Formula 2
Wherein, a is the aerial attenuation quotient of sound wave.Then, gain adjustment unit 236 can be according to the increasing for being calculated
Beneficial offset g is adjusting the gain of the audio signal of each speaker.For example, the example for Fig. 2, then by the second speaker
220 gain is increased to g times of former yield value.For the first speaker 210 with beeline, then because calculated
Gain compensation value g is equal to one, so its gain is constant.
As shown in figure 3, audio signal L and audio signal R for the second speaker 220 for the first speaker 210
After through postponing adjustment and Gain tuning, it is sent to corresponding speaker and is converted into acoustic signals.Although giving above
The specific example for postponing adjustment and Gain tuning is gone out, however, it is understood that those skilled in the art can also adopt other modes
To be adjusted, as long as so that the sound wave that each speaker sends finally arrives at user and arrives at use with the roughly the same time
Having the change of corresponding intensity, all these adjustment modes during family all should fall within the scope of the invention.
In the embodiment shown in Fig. 2 and Fig. 3, the audio signal sent by using each speaker is raised recognizing each
The relative position of sound device, and the position of user is determined by image recognition.This is because, the inventors discovered that, although can be with
The position of each speaker and user is easily determined by image recognition, but in most application scenarios, very
Hardly possible captures the position of each speaker and user by a photographic head, and is arranged on diverse location, tool when adopting
When there are two photographic head in the different visuals field, the complexity of system, such as complexity of the aspect such as installation, wiring can be greatly increased.
Therefore, the present inventor determines customer location merely with image recognition, and the position of each speaker is determined using voice signal
Put, then the position of each speaker and user is carried out by the known relative position between imageing sensor and sound transducer
Fusion such that it is able to easily solve foregoing problems so that the solution of the present invention can easily be employed.
Additionally, the present invention adjusts the delay and gain of each speaker by tracking the position of user, no matter therefore with
At what position, or even when user is in mobile, the sound system can track the position of user at family, and for user
Optimal audition experience is provided.Additionally, the solution of the present invention to the audio signal of each speaker due to being adjusted, institute
With insensitive to the position of speaker, each speaker is neatly put such that it is able to be adapted to space, reduce or avoid
Because space limits to the infringement of audition experience.
Fig. 4 illustrates the flow chart of sound reproduction process 300 according to an embodiment of the invention.Below in conjunction with Fig. 1 to Fig. 4
To illustrate sound reproduction process 300.
First, in step S301, each speaker can be controlled to send predetermined audio signal.In an embodiment
In, for example, each speaker can successively send identical or different frequency, the audio signal of waveform.Due to electrical signal form
Speed of the audio signal in the circuit of sound system can consider much larger than the velocity of sound, therefore in this step can also be easily
Determine that each speaker sends the time of the audio signal (in other words, the audio signal of electric form being converted to into acoustic signals).
Meanwhile, microphone array 201 can receive or detect the predetermined audio signal that each speaker sends.
In step S302, the loudspeaker position detector unit 231 of controller 230 can be detected using microphone array 201
To the audio signal that sends of each speaker determining the position of each speaker.For example, it is fixed using previously described sound source
Position technology, it may be determined that direction of each speaker relative to microphone array；Sound and microphone array are sent using speaker
Row detect time difference between sound, it may be determined that each speaker relative to microphone array distance, it is possible thereby to really
Determine position of each speaker relative to microphone array, i.e., previously described second relative position.
Additionally, in step S303, it is possible to use imageing sensor 202, such as binocular camera are catching environment picture number
According to.In step s 304, the view data that imageing sensor 202 is captured can be by the customer location detector unit of controller 230
232 are processed, such as by image recognition technology come the user in identifying user capture images；And if recognizing user, then
Position of the user relative to imageing sensor 202 is further determined that, i.e., previously described third phase is to position.When being not detected by
During any user, in one example, customer location detector unit 232 can not export third phase to position data so that control
Device 230 does not carry out any regulation to each speaker, or in another example, customer location detector unit 232 can be exported
The third phase of acquiescence is to position data so that controller 230 is adjusted using the default data to each speaker.Work as inspection
When measuring multiple users, in one example, customer location detector unit 232 can detect the position of each user, then export
The data of the center of such as these positions, to position, or can be exported in that middle user's as third phase
Position data.
It should be understood that because fixation is typically compared in the position of speaker, and user may move, so detection is raised one's voice
The step of device position S301, S302 execution frequency can be less than detection customer location the step of S303, S304 execution frequency.
For example, the relative position of a speaker can be detected only when sound system 200 starts, and with predetermined frequency in system operation
Rate repeatedly detects the relative position of user.Additionally, when the relative position of speaker is not detected, sound transducer 201 can be with
It is turned off to save power consumption.
Next, in step S305, Co-factor propagation unit 233 can be with execution position mixing operation.Specifically, position
Integrated unit 233 can receive the second relative position and third phase that determine in abovementioned steps to position, and using known to it
Sound transducer 201 and imageing sensor 202 between relative position (i.e. the first relative position) come determine user relative to
The relative position of each speaker, it is referred to as the 4th relative position.In one embodiment, Co-factor propagation unit 233 is at least true
Determine distance of the user 110 relative to each speaker.
Based on the 4th relative position, i.e. user relative to each speaker distance, you can postponed and gain-adjusted.
For example, in step S306, the delay compensation value of each speaker is calculated, and each speaker is calculated in step S307
Gain compensation value, is then carried out accordingly according to the offset for being calculated in step S308 to the audio signal of each speaker
Adjust.These steps are not repeated herein description above in relation to having been described in the description of Fig. 3.
It should be understood that raising adjusting each in some embodiments, it is also possible to be based only upon user relative to the position of speaker
The delay of the audio signal of sound device；In some embodiments, it is also possible to as described above adjustment postpones and both gains.
Fig. 5 illustrates the example of the equipment with sound system according to an embodiment of the invention.Equipment 400 can be car
, such as domestic sedan car 400, it has sound system 410.As illustrated, sound system 410 can include multiple speakers
401st, 402,403,404,405 and 406, wherein speaker 401 and 402 can be mounted in the preposition high pitch loudspeaker in front,
Speaker 403 and 404 can be mounted in middle part and put woofer, and speaker 405 and 406 can be mounted in rear portion
Rearmounted high pitch loudspeaker.It should be understood that the quantity of the speaker of sound system 410, arrangement etc. are not limited to example shown in the drawings.
Sound system 410 may also include for example many mesh of sound transducer such as microphone array 407 and imageing sensor and take the photograph
As 408 and controller 409, they and previously described sound transducer 201, imageing sensor 202 and controller 230
It is similar, description is not repeated herein.
In the vehicle 400 of Fig. 5, although each speaker 401 to 406 is installed in fixed position, but due to car
Interior space is irregular, and the quantity of general vehicle-mounted loudspeaker is more, it is thus possible to is difficult to obtain each by measuring and raises one's voice
The accurate location of device.In one embodiment, it is possible to use sound transducer 407, method as described previously determines like that each
Speaker because the position is fixed, therefore can be surveyed only relative to the position of sound transducer 407 after speaker is installed
Amount once, is then stored in measurement result in for example vehicle-mounted memorizer (not shown).
Imageing sensor 408 is used to determine the position of user as described previously.In one embodiment, when except driving
When also there is other users (user i.e. on passenger-seat) outside the person of sailing (user i.e. on driver's seat), only will can drive
Member is identified as user, when there is no driver, then the passenger of other positions can be identified as into user, then controller 409
Carry out appropriate speaker for the user for being recognized to adjust.
In further embodiments, except with photographic head come identifying user in addition to, it is also possible to receiving user's input specify
Position.For example, user can specify certain position of in-car to be used as customer location by liquid crystal display (not shown), then control
Device 409 can carry out appropriate regulation according to the position specified to each speaker.
By the sound system using the present invention, when user is on different seats, or have because of conditioned seat position
When mobile, can obtain optimal audition and enjoy.
Fig. 6 illustrates the example of another equipment 500 with sound system according to an embodiment of the invention.Equipment 500 can
To be such as television set, it has left channel loudspeaker 501, right channel loudspeaker 502, sound transducer 503, imageing sensor
504 and controller 505, they can be similar with element 210,220,201,202 and 230 shown in Fig. 2 respectively, here
No longer repeat one by one.
From unlike previously described embodiment, in television set 500, the position of two speakers 501,502 is fixed
And it is easier measurement or determines in design, and sound transducer 503 and imageing sensor 504 are also all disposed within electricity
Depending on the housing of machine, therefore in certain embodiments, it is convenient to omit it is previously described determine each speaker position the step of,
But only then previously described delay and gain are carried out to each speaker come the position of identifying user by imageing sensor
Adjust.
In further embodiments, television set 500 may be connected to external loudspeaker (not shown) by audio interface.
Now, then position of the external loudspeaker relative to sound transducer 503 can be determined according to previously described method, and then
External loudspeaker is postponed with reference to customer location and gain-adjusted.
The principle or embodiment of the present invention is also implemented as computer program, and it is stored in computer-readable
In medium, and including computer program instructions.These computer program instructions when being run by processor, can perform before
The method of description.These computer programs can also be by transmission on Internet or distribution.For example, the computer program can be with
It is audio driven or control program, it can be installed on the electronic equipments such as notebook, mobile phone, flat board, these equipment itself
Just there is imageing sensor and sound transducer.Therefore, when these electronic equipments are connected to boom box system, then may be used
Optimal audition experience is provided the user to perform previously described those methods.
The ultimate principle of the present invention is described above in association with exemplary embodiment, it should be noted however that in the application
In the advantage, advantage, the effect that refer to etc. be only exemplary rather than limiting, it is impossible to think that these advantages, advantage, effect etc. are the application
Each embodiment must be provided simultaneously with.In addition, detail disclosed above merely to the effect of example and be easy to reason
The effect of solution, and it is unrestricted, and above-mentioned details does not limit the invention to realize using above-mentioned concrete details.
The device that is related in the present invention, device, equipment, the block diagram of system only illustratively the example of property and are not intended to
The mode that requirement or hint must be illustrated according to square frame is attached, arranges, configures.As it would be recognized by those skilled in the art that
, can be connected, be arranged by any-mode, configure these devices, device, equipment, system.Shown in the flow chart that the application is provided
Method be not limited to the declaration order of flow chart, but, multiple steps can be performed in a different order, or two or
More multi-step can be performed simultaneously, what these changes will be apparent to those skilled in the art.Such as " including ", " bag
Containing ", the word of " having " etc. be open vocabulary, refer to " including but not limited to ", and can be with its used interchangeably.It is used here
Vocabulary "or" and " and " refer to vocabulary "and/or", and can be with its used interchangeably, unless it be not such that context is explicitly indicated.This
In the vocabulary " such as " that used refer to phrase " such as, but not limited to ", and can be with its used interchangeably.
It may also be noted that in the apparatus and method of the application, each part or each step can be to decompose and/or weigh
Combination nova.These decompose and/or reconfigure the equivalents that should be regarded as the application.
The above description of disclosed aspect is provided so that any person skilled in the art can make or using this
Application.Various modifications in terms of these are readily apparent to those skilled in the art, and here is defined
General Principle can apply to other aspect without deviating from scope of the present application.Therefore, the application is not intended to be limited to
Aspect shown in this, but according to the widest range consistent with the feature of principle disclosed herein and novelty.
In order to purpose of illustration and description has been presented for above description.Additionally, this description is not intended to the reality of the application
Apply example and be restricted to form disclosed herein.Although already discussed above multiple exemplary aspects and embodiment, this area skill
Art personnel will be recognized that its some modification, modification, change, addition and sub-portfolio.
Claims (11)
1. a kind of multi-channel audio system, including multiple speakers (210,220), imageing sensor (202), sound transducer
(201) and controller (230), there is the predetermined first relative position between described image sensor and the sound transducer
Put, the controller includes：
Loudspeaker position detector unit (231), be configured to that the sound transducer detects raises one's voice from the plurality of
The predetermined audio signal of device is determining second relative position of the plurality of speaker relative to the sound transducer；
Customer location detector unit (232), is configured to user images that described image sensor detects to determine user
Relative to described image sensor third phase to position；
Co-factor propagation unit (233), is configured to fusion first relative position, second relative position and described the
Three relative positions, so that it is determined that fourth relative position of the user relative to each speaker；
Delay compensation computing unit (234), is configured to sound of the 4th relative position to calculate for each speaker
The delay compensation value of frequency signal；And
Postpone adjustment unit (236), the phase of the audio signal for being configured to adjust each speaker according to the delay compensation value
Position.
2. multi-channel audio system as claimed in claim 1, wherein, described image sensor and the sound transducer are arranged
On in the plurality of speaker, so as to have predetermined the between the sound transducer and one speaker
Two relative positions.
3. multi-channel audio system as claimed in claim 1, wherein, the sound transducer includes microphone array, described
Loudspeaker position detector unit is configured to sound localization to determine side of each speaker relative to the microphone array
To, and predetermined audio signal is sent based on each speaker and the microphone array is received between the audio signal
Time difference is determining distance of each speaker relative to the microphone array.
4. multi-channel audio system as claimed in claim 1, wherein, the controller also includes：
Gain compensation computing unit (235), is configured to sound of the 4th relative position to calculate for each speaker
The gain compensation value of frequency signal；And
Gain adjustment unit (237), the increasing of the audio signal for being configured to adjust each speaker according to the gain compensation value
Benefit.
5. a kind of equipment of the multi-channel audio system including described in any one of Claims 1-4.
6. equipment as claimed in claim 5, wherein, the equipment is television set or automobile.
7. a kind of method that sound is reappeared using multi-channel audio system, the multi-channel audio system includes multiple raising one's voice
Device, methods described includes：
The predetermined audio signal that each speaker sends is received from sound transducer, and is believed based on received predetermined audio
Number determine the second relative position of each speaker；
From imageing sensor receive user image, and determine the third phase para-position of user based on received user images
Put；
To second relative position, the third phase to predetermined between position and sound transducer and imageing sensor
First relative position is merged, to determine fourth relative position of the user relative to each sensor；And
The delay compensation value of the audio signal for each speaker is determined based on the 4th relative position, and according to described
Delay compensation value is adjusting the phase place of the audio signal of each speaker.
8. method as claimed in claim 7, wherein, described image sensor and the sound transducer are arranged on the plurality of
On in speaker, so as to have the predetermined second relative position between the sound transducer and one speaker
Put.
9. method as claimed in claim 7, wherein it is determined that the second relative position of each speaker includes：
Direction of each speaker relative to the sound transducer is determined based on sound localization, and based on each speaker
Send predetermined audio signal and the sound transducer receives the time difference between the audio signal and raises one's voice determining each
Distance of the device relative to the sound transducer.
10. method as claimed in claim 7, also includes：
The gain compensation value of the audio signal for each speaker is determined based on the 4th relative position, and according to described
Gain compensation value is adjusting the gain of the audio signal of each speaker.
A kind of 11. computer programs, including computer program instructions, the computer program instructions are being run by processor
When make described in any one of described computing device claim 7 to 10 method.
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| CN201710001369.8A CN106686520B (en) | 2017-01-03 | 2017-01-03 | The multi-channel audio system of user and the equipment including it can be tracked |
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| CN201710001369.8A CN106686520B (en) | 2017-01-03 | 2017-01-03 | The multi-channel audio system of user and the equipment including it can be tracked |
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