CN101282592A - Acoustics system with audio field adjusting function as well as method for adjusting audio field - Google Patents
Acoustics system with audio field adjusting function as well as method for adjusting audio field Download PDFInfo
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- CN101282592A CN101282592A CNA2008100995796A CN200810099579A CN101282592A CN 101282592 A CN101282592 A CN 101282592A CN A2008100995796 A CNA2008100995796 A CN A2008100995796A CN 200810099579 A CN200810099579 A CN 200810099579A CN 101282592 A CN101282592 A CN 101282592A
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Abstract
The present invention is sound system with sound field adjusting function and method of sound field adjusting. The sound system with sound field adjusting function comprises coordinate distance detecting element for sending the position signal after detecting the position of the listeners in the space plane; and mainframe for outputting sound source signal and internally installing sound field characteristic parameter matrix, storing the several sound field characteristic parameters corresponding to the several positions with the space planes and taking out corresponding sound field character to adjust the sound source signal when the mainframe receives the position signal. The present invention is able to locate the position of the listeners so as to finish the acoustics adjusting of the sound system.
Description
Technical field
The present invention is a kind of sound system with sound field adjustment (Acoustic Calibration System), refers to a kind of sound system with sound field adjustment that adopts the coordinate distance detecting element especially.
Background technology
See also Fig. 1, it is depicted as the sound system schematic diagram.This sound system mainly comprises: voice signal origin system 11, amplifier system 13 and speaker system 15; Wherein amplifier system is made of preamplifier 131 and power amplifier 133, and voice signal origin system 11 and amplifier system 13 can be considered the main frame 17 of sound system.
Voice signal origin system 11 be meant acoustic energy can be converted to electronic signal maybe can be with the stereo set of the voice signal playback noted.Common sound signal source has: receive the AM/FM tuner of radio programmes, the tape deck of playback band, compact disc, microphone or the VCD/DVD player etc. of play CD.At first, voice signal origin system 11 is sent to preamplifier 131 with first signal that is produced.Preamplifier 131 is zoomed into secondary signal with the first faint signal subsequently, and secondary signal is small-signal (small signal), and secondary signal is sent to power amplifier 133; Because secondary signal is a voice signal, and preamplifier 131 mainly is the ability that strengthens voice signal antagonism noise jamming, and the characteristic that changes voice signal, as frequency and accurate position etc.After power amplifier 133 received secondary signal, power amplifier 133 strengthened the power of secondary signal subsequently, makes it become more powerful the 3rd signal of tool, in order to promote the speaker system 15 of next stage.Speaker system 15 is at last that the vibrations of sound wave are exported again again with the 3rd signal transition.
Along with the progress of sound system, at present sound system develops into and can play out stereosonic dual track by the single sound channel of earliest period, or even multichannel around audio, as 5.1 sound channels etc.
See also Fig. 2 A, it is depicted as has the multichannel sound system schematic diagram.This multi-channel audio system mainly comprises: main frame 21 (being made of voice signal origin system 211 and amplifier system 213), speaker system (for convenience of description, this speaker system is made up of left channel loudspeaker 23 and right channel loudspeaker 25).Owing to listen the sound field of sound that hearer 27 hears, outside the Pass having with the quality of sound system own, also the position and the angle of putting with left channel loudspeaker 23 and right channel loudspeaker 25 is relevant.That is to say, when listening the hearer, must consider position and angle that left channel loudspeaker 23 and right channel loudspeaker 25 are put, so could adjustment go out the sound field characteristic parameter, and then hear sound best in quality at the device sound system.In general the sound field characteristic parameter all is to set to listen hearer position 27 in the centre position, that is position that left channel loudspeaker 23 and right channel loudspeaker 25 are put and angle are as target with the centre position in the set space plane of sound system.That is to say,, listen hearer 27 and can hear best sound field effect when listening hearer 27 when being the centre position that is sitting in shown in Fig. 2 A.
Yet,, will cause the distortion of sound sound field in case listen the centre position that hearer 27 leaves the sound system voice output.See also Fig. 2 B, it is depicted as listens hearer 27 and leaves the centre position schematic diagram with multi-channel audio system.Obviously, when listening hearer 27 to leave the sound system centre position during near left channel loudspeaker 23, if main frame is controlled left channel loudspeaker 23 and right channel loudspeaker 25 according to original sound field characteristic parameter, can make listen hearer's 27 hears from the sound of left channel loudspeaker 23 loud from right channel loudspeaker 25 recently, and listen hearer's 27 hears and will come postpone to some extent than sound from left channel loudspeaker 23 from the sound of right channel loudspeaker 25.Thus, must carry out sound field adjustment program once more, obtain new sound field characteristic parameter, make main frame can utilize this new sound field characteristic parameter to control left channel loudspeaker 23 and right channel loudspeaker 25 and allow and listen hearer 27 and can hear best sound field effect once more.
To listen hearer what position in office and all can hear the sound with sound field characteristic parameter in order to allow, sound system manufacturer releases a kind of sound system with adjustment sound field function; Wherein at present to utilize microphone comparatively common as calibration apparatus.See also Fig. 3, it is depicted as the sound system schematic diagram with sound field adjusting function.Sound system with sound field adjusting function mainly comprises: main frame 31 (by voice signal origin system 311, amplifier system 313, constituted), speaker system (for convenience of description, speaker system is made up of left channel loudspeaker 33 and right channel loudspeaker 35) with micro controller 315, with test microphone apparatus 37; Wherein test microphone 37 and can be the non-directive microphone.When listening the hearer when needing again the adjustment sound field, at first, listen the hearer and open test microphone 37 and will test microphone 37 and place and listen the hearer present position because of position change; The test that subsequently manufacturer is provided the tuning special use is incorporated into the main frame 31 of sound system with discs, and wherein test has the test tone (Test Tone) of various different sound field characteristic parameters in order to generation with discs; Test tone is subsequently via left channel loudspeaker 33 and right channel loudspeaker 35 outputs; Test microphone 37 is back to main frame 31 behind the acceptance test sound; This moment, main frame 31 interior microprocessors 315 can be along with received test sound, calculate the sound field characteristic parameter of test microphone 37 present positions, change the output delay time and the volume of left channel loudspeaker 33 and right channel loudspeaker 35, and then make that listening the hearer can hear best sound field effect in certain location.
In fact, by manually carrying out sound field adjustment program and obtaining very consuming time of new sound field characteristic parameter.Therefore, generally all be to install for the first time in multichannel sound system can carry out sound field adjustment program after finishing, this sound field characteristic parameter will be stored in the main frame 31 and can not rechange afterwards.
Summary of the invention
The invention provides sound system, be arranged at space plane, and space plane is divided into two-dimensional matrix, comprise with sound field adjusting function: the coordinate distance detecting element, in order to listen the hearer in detection behind the position of space plane, the launching position signal; And main frame, the output sound source signal, and built-in sound field characteristic parameter matrix stores the pairing a plurality of sound field characteristic parameters in a plurality of positions of this space plane, behind main frame receiving position signal, takes out corresponding sound field characteristic parameter and adjusts sound source signal.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned main frame also comprises the voice signal origin system, in order to produce above-mentioned sound source signal.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned main frame also comprises microcontroller, connect above-mentioned coordinate distance detecting element and sound field characteristic parameter matrix, after receiving above-mentioned position signalling, take out corresponding above-mentioned sound field characteristic parameter and adjust above-mentioned sound source signal.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned main frame also comprises amplifier system, connects the tut signal source system, receives above-mentioned sound source signal.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned main frame also is connected to speaker system, makes adjusted above-mentioned sound source signal can import above-mentioned speaker system.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned coordinate distance detecting element are infrared ray transmitting-receiving sensing apparatus.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned coordinate distance detecting element are ultrasonic waves transmitting-receiving sensing apparatus.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned coordinate distance detecting element are that image extracts element.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned space plane is divided into two-dimensional matrix, makes above-mentioned sound field characteristic parameter matrix and the mapping mutually of above-mentioned space plane.
Aforesaid sound system with sound field adjusting function, wherein above-mentioned sound field characteristic parameter is the output delay time or the volume of above-mentioned sound source signal for a change.
The present invention also proposes a kind of method of sound field adjustment, is applied to sound system, comprises the following step: detect and listen the hearer and be positioned at the position of space plane and produce position signalling; According to this position signalling, by taking out corresponding sound field characteristic parameter in the sound field characteristic parameter matrix; And adjust sound source signal according to this sound field characteristic parameter.
The method of aforesaid sound field adjustment, the above-mentioned position that the wherein above-mentioned hearer of listening is positioned at above-mentioned space plane is to utilize infrared ray transmitting-receiving sensing apparatus to detect.
The method of aforesaid sound field adjustment, the above-mentioned position that the wherein above-mentioned hearer of listening is positioned at above-mentioned space plane is to utilize ultrasonic waves transmitting-receiving sensing apparatus to detect.
The method of aforesaid sound field adjustment, the above-mentioned position that the wherein above-mentioned hearer of listening is positioned at above-mentioned space plane is to utilize image to extract element to detect.
The method of aforesaid sound field adjustment also comprises adjusted above-mentioned sound source signal is outputed to speaker system.
The method of aforesaid sound field adjustment, wherein above-mentioned space plane is divided into two-dimensional matrix, makes above-mentioned sound field characteristic parameter matrix and the mapping mutually of above-mentioned space plane.
The method of aforesaid sound field adjustment, wherein above-mentioned sound field characteristic parameter can change the output delay time or the volume of above-mentioned sound source signal.
The sound system that the present invention has a sound field adjusting function enters into image and extracts in the range of components and listening after the hearer determines to start the sound field adjustment listening the hearer, can locate the position of listening the hearer, and then finish the sound field adjustment of sound system.
Description of drawings
Figure 1 shows that the sound system schematic diagram.
Fig. 2 A is depicted as and listens the hearer and be positioned at the centre position schematic diagram with multichannel sound system.
Fig. 2 B is depicted as and listens the hearer and leave the centre position schematic diagram with multi-channel audio system.
Figure 3 shows that sound system schematic diagram with sound field adjusting function.
Figure 4 shows that the sound system schematic diagram with sound field adjusting function of the present invention.
Figure 5 shows that the sound system flow chart with sound field adjusting function of the present invention.
Embodiment
See also Fig. 4, it is depicted as the sound system schematic diagram with sound field adjusting function of the present invention.Sound system mainly comprises: main frame 41 (by voice signal origin system 411, amplifier system 413, constituted with micro controller 415, sound field characteristic parameter matrix 417), speaker system are (for convenience of description, speaker system is made up of left channel loudspeaker 43 and right channel loudspeaker 45), with coordinate distance detecting element 47, be connected to main frame 41.Wherein, coordinate distance detecting element 47 is mainly listened hearer's position and outgoing position signal according to this in order to detection.And the built-in sound field characteristic parameter of main frame matrix 417, this sound field characteristic parameter matrix 417 can be considered memory, and it stores a plurality of sound field characteristic parameters of each position of the set space plane of sound system.That is to say, suppose that the set space plane of sound system is divided into M * N matrix, then sound system is with the sound field characteristic parameter matrix of built-in phase mapping (M * N), and sound field characteristic parameter matrix stores has M * N sound field characteristic parameter of opposite position.
At first, suppose when the setting left channel loudspeaker 43 of the preceding characteristic parameter of sound system and the output of right channel loudspeaker 45 sound be as target with primary importance, that is the hearer that listens before is when being in the primary importance of space plane, then utilize the corresponding characteristic parameter of primary importance to set main frame 41, then left channel loudspeaker 43 and right channel loudspeaker 45 outputs can make and listen the hearer hears the best in primary importance sound field effect.
Yet when listening the hearer when leaving primary importance to the second place, the corresponding sound field characteristic parameter of primary importance can't allow listens the hearer and hears best sound field effect in the second place.Therefore, the sound field characteristic parameter of adjustment sound system so could be heard best sound field effect more again.At first, coordinate distance detecting element 47 detects the reposition (supposing the second place) of listening the hearer earlier, and will represent the position signalling of reposition (supposing the second place) to be sent to main frame 41.When main frame 41 received the position signalling of representing reposition (supposing the second place), the microprocessors 415 in the main frame 41 can will be represented the sound field characteristic parameter of finding out reposition (supposing the second place) in the position signalling of reposition (supposing the second place) and the built-in sound field characteristic parameter matrix; Change the output delay time or the volume of left channel loudspeaker 43 and right channel loudspeaker 45 at last again according to the sound field characteristic parameter of reposition (supposing the second place), and then make that listening the hearer can hear best sound field effect at reposition (supposing the second place).
See also Fig. 5, it is depicted as the sound system flow chart with sound field adjusting function of the present invention.At first, start sound system of the present invention (step 51); After sound system of the present invention started, the main frame of sound system can be with the sound field characteristic parameter of primary importance before as sound field characteristic parameter (step 53); Listen hearer's decision this moment and whether start sound field adjustment program (step 55); Suppose to listen the hearer and determine not start sound field adjustment program in primary importance, then sound system will come the output (step 61) of control loudspeaker system according to the sound field characteristic parameter of original start (primary importance); Otherwise, suppose to listen the hearer not in primary importance, and decision will start sound field adjustment program, and then the coordinate distance detecting element will detect the reposition (second place) of listening the hearer, and will represent the position signalling of reposition (second place) to be sent to main frame (step 57); After receiving the position signalling of representing the reposition (second place) of listening the hearer, the microprocessor in the sound system will be set the sound field characteristic parameter (step 59) of listening hearer's reposition (second place) by built-in sound field characteristic parameter matrix; And the output that sound system will come the control loudspeaker system according to the corresponding sound field characteristic parameter of the second place.
Moreover according to embodiments of the invention, the coordinate distance detecting element is an optical element, can be made up of a plurality of infrared ray transmitting-receiving sensing apparatus.Enter in the sensing range of infrared ray transmitting-receiving sensing apparatus and listen after the hearer determines to start the sound field adjustment when listening the hearer, the infrared ray transmitting-receiving infrared ray that sensing apparatus sent just can be listened hearer's reflection and be formed reflection ray and be sent to the infrared ray transmitting-receiving in the receiver that sensing apparatus comprised.Thus, utilize a plurality of infrared ray transmitting-receiving sensing apparatus, can locate the position of listening the hearer, and then finish the sound field adjustment of sound system.
In addition, coordinate distance detecting element of the present invention also can be formed the field of its application such as the level control of holding tank and reversing radar of vehicle etc. by a plurality of ultrasonic waves transmitting-receiving sensing apparatus.Its principle is to calculate ultrasonic waves transmitting-receiving sensing apparatus emission ultrasonic waves (Ultrasonic Wave) to the acoustic transit time (TOF that receives the echo signal (Echo Signal) that determinand reflects, Time of Flight), the size of TOF can be represented the distance between reflecting object and the ultrasonic waves transmitting-receiving sensing apparatus.If require to obtain actual distance, the speed that can utilize sound to propagate in air, the speed that TOF be multiply by propagation is again divided by 2, just can obtain the distance that determinand and ultrasonic waves are received and dispatched sensing apparatus.Thus, enter in the sensing range of ultrasonic waves transmitting-receiving sensing apparatus and listen after the hearer determines to start the sound field adjustment, utilize a plurality of ultrasonic wavess transmitting-receiving sensing apparatus, can locate the position of listening the hearer, and then finish the sound field adjustment of sound system when listening the hearer.
In addition, coordinate distance detecting element of the present invention also can extract element (for example digital camera) by image and be formed.Enter into image and extract in the range of components and listen after the hearer determines to start the sound field adjustment when listening the hearer, utilize to have the original image of listening the hearer and not listening the hearer and contrast, can locate the position of listening the hearer, and then finish the sound field adjustment of sound system.
In sum; though the present invention with preferred embodiment openly as above; right its is not in order to restriction the present invention; those skilled in the art without departing from the spirit and scope of the present invention; when can doing various changes and modification, so protection scope of the present invention is as the criterion when looking the scope that claims define.
Claims (17)
1. have the sound system of sound field adjusting function, it is characterized in that, comprise:
The coordinate distance detecting element is in order to listen the hearer behind the position of space plane, the launching position signal detecting; And
Main frame, the output sound source signal, and built-in sound field characteristic parameter matrix stores the pairing a plurality of sound field characteristic parameters in a plurality of positions of above-mentioned space plane, after above-mentioned main frame receives above-mentioned position signalling, take out corresponding above-mentioned sound field characteristic parameter and adjust above-mentioned sound source signal.
2. the sound system with sound field adjusting function according to claim 1 is characterized in that above-mentioned main frame also comprises the voice signal origin system, in order to produce above-mentioned sound source signal.
3. the sound system with sound field adjusting function according to claim 2, it is characterized in that, above-mentioned main frame also comprises microcontroller, connect above-mentioned coordinate distance detecting element and sound field characteristic parameter matrix, after receiving above-mentioned position signalling, take out corresponding above-mentioned sound field characteristic parameter and adjust above-mentioned sound source signal.
4. the sound system with sound field adjusting function according to claim 2 is characterized in that above-mentioned main frame also comprises amplifier system, connects the tut signal source system, receives above-mentioned sound source signal.
5. the sound system with sound field adjusting function according to claim 1 is characterized in that above-mentioned main frame also is connected to speaker system, makes adjusted above-mentioned sound source signal can import above-mentioned speaker system.
6. the sound system with sound field adjusting function according to claim 1 is characterized in that, above-mentioned coordinate distance detecting element is an infrared ray transmitting-receiving sensing apparatus.
7. the sound system with sound field adjusting function according to claim 1 is characterized in that, above-mentioned coordinate distance detecting element is a ultrasonic waves transmitting-receiving sensing apparatus.
8. the sound system with sound field adjusting function according to claim 1 is characterized in that, above-mentioned coordinate distance detecting element is that image extracts element.
9. the sound system with sound field adjusting function according to claim 1 is characterized in that above-mentioned space plane is divided into two-dimensional matrix, makes above-mentioned sound field characteristic parameter matrix and the mapping mutually of above-mentioned space plane.
10. the sound system with sound field adjusting function according to claim 1 is characterized in that, above-mentioned sound field characteristic parameter is the output delay time or the volume of above-mentioned sound source signal for a change.
11. the method for a sound field adjustment is applied to sound system, it is characterized in that, comprises the following step:
Detect and listen after the hearer is positioned at the position of space plane, produce position signalling;
According to above-mentioned position signalling, in sound field characteristic parameter matrix, take out corresponding sound field characteristic parameter; And
According to above-mentioned sound field characteristic parameter, adjust sound source signal.
12. the method for sound field adjustment according to claim 11 is characterized in that, the above-mentioned position that the above-mentioned hearer of listening is positioned at above-mentioned space plane is to utilize infrared ray transmitting-receiving sensing apparatus to detect.
13. the method for sound field adjustment according to claim 11 is characterized in that, the above-mentioned position that the above-mentioned hearer of listening is positioned at above-mentioned space plane is to utilize ultrasonic waves transmitting-receiving sensing apparatus to detect.
14. the method for sound field adjustment according to claim 11 is characterized in that, the above-mentioned position that the above-mentioned hearer of listening is positioned at above-mentioned space plane is to utilize image to extract element to detect.
15. the method for sound field adjustment according to claim 11 is characterized in that, also comprises adjusted above-mentioned sound source signal is outputed to speaker system.
16. the method for sound field adjustment according to claim 11 is characterized in that, above-mentioned space plane is divided into two-dimensional matrix, makes above-mentioned sound field characteristic parameter matrix and the mapping mutually of above-mentioned space plane.
17. the method for sound field adjustment according to claim 11 is characterized in that, above-mentioned sound field characteristic parameter can change the output delay time or the volume of above-mentioned sound source signal.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102469402A (en) * | 2010-11-09 | 2012-05-23 | 康佳集团股份有限公司 | Audio system |
| CN102780964A (en) * | 2012-08-09 | 2012-11-14 | 广州励丰文化科技股份有限公司 | Method for adjusting professional loudspeaker system |
| CN102857857A (en) * | 2012-02-17 | 2013-01-02 | 东莞耳神电声科技有限公司 | Loudspeaker box channel matching method of multi-channel wireless audio system |
| CN102026082B (en) * | 2009-09-21 | 2014-06-04 | 联想(北京)有限公司 | Track self-adaptive method and device for sound producing device |
| CN104062830A (en) * | 2013-03-22 | 2014-09-24 | 宏碁股份有限公司 | Projector and method for setting the projector |
| CN104469623A (en) * | 2014-11-28 | 2015-03-25 | 广东好帮手电子科技股份有限公司 | Sound field adjusting system and method based on car pillow |
| CN104735589A (en) * | 2015-01-30 | 2015-06-24 | 广东欧珀移动通信有限公司 | Intelligent loudspeaker box grouped volume regulation system and method based on GPS |
| CN105101013A (en) * | 2015-06-30 | 2015-11-25 | 小米科技有限责任公司 | Method and device for playing voice signals |
| CN106851469A (en) * | 2017-02-16 | 2017-06-13 | 深圳创维－Rgb电子有限公司 | It is a kind of to adjust the method and apparatus that audio amplifier exports audio |
| CN107211211A (en) * | 2015-01-21 | 2017-09-26 | 高通股份有限公司 | For the system and method for the channel configuration for changing audio output apparatus collection |
| CN107396274A (en) * | 2017-07-07 | 2017-11-24 | 广州飞达音响股份有限公司 | The method, apparatus and system of active linear array sound equipment sound field adjustment |
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| CN102026082B (en) * | 2009-09-21 | 2014-06-04 | 联想(北京)有限公司 | Track self-adaptive method and device for sound producing device |
| CN102469402B (en) * | 2010-11-09 | 2016-01-20 | 康佳集团股份有限公司 | audio system |
| CN102469402A (en) * | 2010-11-09 | 2012-05-23 | 康佳集团股份有限公司 | Audio system |
| CN102857857A (en) * | 2012-02-17 | 2013-01-02 | 东莞耳神电声科技有限公司 | Loudspeaker box channel matching method of multi-channel wireless audio system |
| CN102780964B (en) * | 2012-08-09 | 2016-08-10 | 广州励丰文化科技股份有限公司 | Professional loudspeaker system method of adjustment |
| CN102780964A (en) * | 2012-08-09 | 2012-11-14 | 广州励丰文化科技股份有限公司 | Method for adjusting professional loudspeaker system |
| CN104062830A (en) * | 2013-03-22 | 2014-09-24 | 宏碁股份有限公司 | Projector and method for setting the projector |
| CN104469623A (en) * | 2014-11-28 | 2015-03-25 | 广东好帮手电子科技股份有限公司 | Sound field adjusting system and method based on car pillow |
| CN104469623B (en) * | 2014-11-28 | 2017-01-11 | 广东好帮手电子科技股份有限公司 | Sound field adjusting system and method based on car pillow |
| CN107211211A (en) * | 2015-01-21 | 2017-09-26 | 高通股份有限公司 | For the system and method for the channel configuration for changing audio output apparatus collection |
| CN104735589A (en) * | 2015-01-30 | 2015-06-24 | 广东欧珀移动通信有限公司 | Intelligent loudspeaker box grouped volume regulation system and method based on GPS |
| CN104735589B (en) * | 2015-01-30 | 2018-01-23 | 广东欧珀移动通信有限公司 | A kind of sound volume regulating system and method for the intelligent sound box packet based on GPS |
| CN105101013A (en) * | 2015-06-30 | 2015-11-25 | 小米科技有限责任公司 | Method and device for playing voice signals |
| CN106851469A (en) * | 2017-02-16 | 2017-06-13 | 深圳创维－Rgb电子有限公司 | It is a kind of to adjust the method and apparatus that audio amplifier exports audio |
| CN107396274A (en) * | 2017-07-07 | 2017-11-24 | 广州飞达音响股份有限公司 | The method, apparatus and system of active linear array sound equipment sound field adjustment |
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Open date: 20081008 |