CN108769892A - A kind of implementation method of TV panorama sound - Google Patents
A kind of implementation method of TV panorama sound Download PDFInfo
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- CN108769892A CN108769892A CN201810517835.2A CN201810517835A CN108769892A CN 108769892 A CN108769892 A CN 108769892A CN 201810517835 A CN201810517835 A CN 201810517835A CN 108769892 A CN108769892 A CN 108769892A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
- H04S5/005—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation of the pseudo five- or more-channel type, e.g. virtual surround
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- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Television Receiver Circuits (AREA)
Abstract
The present invention discloses a kind of implementation method of TV panorama sound, TV is furnished with the panorama sound loud speaker of main sound channel loud speaker and angle adjustable, the implementation method of TV panorama sound is specifically to test reflecting effect automatically on each angle adjustable of panorama sound loud speaker, and the best speaker export direction or angle choosing and can protrude panorama sound effective value is compared in the reflecting effect of all angles.According to scape sound speaker outlet orientation angle best information adjust automatically sound effect algorithms again are obtained, to obtain the best panorama sound effective value in place application scenario.
Description
Technical field
The present invention relates to the audio and video processing technology field of display equipment more particularly to a kind of realization sides of TV panorama sound
Method.
Background technology
There are the TV of integrated similar panorama sound Sound Bar, such as the Sound of 2.1.2 Chanel currently on the market
Bar, wherein .2 Channel are exactly the sound channel for generating Deep Canvas, and realization principle is that its speaker outlet tiltedly leads to upward
Metope reflection+sound effect algorithms are crossed to realize Deep Canvas.Good scape sound effective value needs relatively accurately to obtain the phase of reflex channel
Close information, existing panorama sound Sound Bar TVs can not according to the practical reflecting effect of application scenario come adjust sound effect algorithms with
Obtain best panorama sound effective value.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of implementation methods of TV panorama sound.
The technical solution adopted by the present invention is：
A kind of implementation method of TV panorama sound, whole set of television is configured with main sound channel loud speaker and special generation panorama sound effective value sound
Frequency is handled and the panorama sound loud speaker of output, the angle adjustable of panorama sound loud speaker tiltedly upward, TV are raised one's voice for panorama sound
Device is preset with N number of towards angle, Mic of the whole set of television equipped with radio reception；Method includes the following steps：
Step 1：TV sends out a test tone by main sound channel loud speaker and is recycled by Mic, and acquisition sound, which is issued to, to be recovered to
The delay T1 of the sound and intensity B1 for being recovered to sound, and store the detection parameters as main sound channel loud speaker；
Step 2：It is preset N number of one towards in angle to adjust the angle of panorama sound loud speaker tiltedly upward, and is adjusted every time
It is different towards angle；
Step 3：TV sends out a test tone by panorama loud speaker and is recycled by Mic, and acquisition sound, which is issued to, is recovered to sound
The delay T2 of the sound and intensity B2 for being recovered to sound, and store and join in the default detection towards angle as panorama sound loud speaker
Number；
Step 4：Step 2-3 is repeated until all default all detected towards the detection parameters of angle of panorama sound loud speaker finish；
Step 5：Every group of default detection parameters towards angle of panorama sound loud speaker are joined with the detection of main sound channel loud speaker one by one
Number is compared, and the ideal towards angle of panorama sound loud speaker is selected；
Step 6：Based on ideal towards the direction of angular adjustment panorama sound loud speaker, sound effect algorithms are adjusted towards angle according to ideal
Obtain best panorama sound effective value.
Further, the determination method of ideal towards angle is as follows in step 5：
Step 5-1：It calculates every group of default panorama sound loud speaker towards angle and reaches audience's listened position with main sound channel loud speaker
Time difference Δ T, Δ T=（T2-T1）/2,
Step 5-2：Every group of default panorama sound loud speaker towards angle is calculated to connect in audience's listened position with main sound channel loud speaker
Intensity difference the Δ B, Δ B=B2-B1 received；
Step 5-3：Rejecting time difference Δ T corresponds to detection parameters more than the default of 10ms towards angle；
Step 5-4：Compare the default towards strong in the detection parameters of angle of the panorama sound loud speaker of all time difference Δ T≤10ms
The size of the value of the poor Δ B of degree, chooses the default reason towards angle as panorama sound loud speaker corresponding to intensity difference Δ B minimum values
Want towards angle.
Further, according to ideal, towards angle adjustment sound effect algorithms, the specific method is as follows in step 6：
In main sound channel loud speaker ideal corresponding on the basis of panorama sound loud speaker original synchronous cant towards the time difference Δ T of angle
The difference processing that disappears of a mutual time difference Δ T is done,
Main sound channel loud speaker with panorama sound loud speaker in former intensity sounding on the basis of the corresponding ideal towards angle intensity difference
Δ B is a Bn*（1+ΔB/B）Δ B disappear difference processing, wherein B be test tone intensity, Bn be actual scene pronounce when send out
Intensity of sound.
The present invention uses above technical scheme, and the speaker outlet orientation angle based on responsible panorama sound effective value tiltedly upward can
Under the precondition of the hardware supported of automatic adjustment, reflecting effect is tested automatically on each angle adjustable of panorama sound loud speaker,
The best speaker export direction or angle chosen and can protrude panorama sound effective value is compared in the reflecting effect of all angles.Root
It is best with application scenario where obtaining according to obtaining scape sound speaker outlet orientation angle best information adjust automatically sound effect algorithms again
Panorama sound effective value.
Description of the drawings
The present invention is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is a kind of television acoustics structural schematic diagram of the implementation method of TV panorama sound of the present invention；
Fig. 2 is a kind of flow diagram of the implementation method of TV panorama sound of the present invention.
Specific implementation mode
As shown in the figures 1 and 2, a kind of implementation method of TV panorama sound of the present invention, as shown in Figure 1, whole set of television is configured with
Main sound channel loud speaker and the special panorama sound loud speaker for generating panorama sound effective value audio frequency process and output, the oblique court of panorama sound loud speaker
On angle adjustable, TV is preset with N number of towards angle for panorama sound loud speaker, and whole set of television is furnished with the Mic of radio reception；Such as
Shown in Fig. 2, method includes the following steps：
Step 1：TV sends out a test tone by main sound channel loud speaker and is recycled by Mic, and acquisition sound, which is issued to, to be recovered to
The delay T1 of the sound and intensity B1 for being recovered to sound, and store the detection parameters as main sound channel loud speaker；
Step 2：It is preset N number of one towards in angle to adjust the angle of panorama sound loud speaker tiltedly upward, and is adjusted every time
It is different towards angle；
Step 3：TV sends out a test tone by panorama loud speaker and is recycled by Mic, and acquisition sound, which is issued to, is recovered to sound
The delay T2 of the sound and intensity B2 for being recovered to sound, and store and join in the default detection towards angle as panorama sound loud speaker
Number；
Step 4：Step 2-3 is repeated until all default all detected towards the detection parameters of angle of panorama sound loud speaker finish；
Step 5：Every group of default detection parameters towards angle of panorama sound loud speaker are joined with the detection of main sound channel loud speaker one by one
Number is compared, and the ideal towards angle of panorama sound loud speaker is selected；
Step 6：Based on ideal towards the direction of angular adjustment panorama sound loud speaker, sound effect algorithms are adjusted towards angle according to ideal
Obtain best panorama sound effective value.
Further, the determination method of ideal towards angle is as follows in step 5：
Step 5-1：It calculates every group of default panorama sound loud speaker towards angle and reaches audience's listened position with main sound channel loud speaker
Time difference Δ T, Δ T=（T2-T1）/2,
Step 5-2：Every group of default panorama sound loud speaker towards angle is calculated to connect in audience's listened position with main sound channel loud speaker
Intensity difference the Δ B, Δ B=B2-B1 received；
Step 5-3：Rejecting time difference Δ T corresponds to detection parameters more than the default of 10ms towards angle；Because being normally applied house
Front yard Δ T does not exceed 10ms generally, while 10ms is also in the range that system can disappear difference.
Step 5-4：Compare the default detection parameters towards angle of the panorama sound loud speaker of all time difference Δ T≤10ms
The size of the value of middle intensity difference Δ B chooses presetting towards angle as panorama sound loud speaker corresponding to intensity difference Δ B minimum values
It is ideal towards angle.In the range of Δ T≤10ms, Δ B values are smaller to indicate that tiltedly the angle of panorama sound loud speaker upward is better.
Further, according to ideal, towards angle adjustment sound effect algorithms, the specific method is as follows in step 6：
In main sound channel loud speaker ideal corresponding on the basis of panorama sound loud speaker original synchronous cant towards the time difference Δ T of angle
The difference processing that disappears of a mutual time difference Δ T is done,
Main sound channel loud speaker with panorama sound loud speaker in former intensity sounding on the basis of the corresponding ideal towards angle intensity difference
Δ B is a Bn*（1+ΔB/B）Δ B disappear difference processing, wherein B be test tone intensity, Bn be actual scene pronounce when send out
Intensity of sound.
The present invention uses above technical scheme, and the oblique export direction angle upward based on panorama sound loud speaker can automatically adjust
Hardware supported precondition under, test reflecting effect, all angles automatically on each angle adjustable of panorama sound loud speaker
Reflecting effect be compared to choose and can protrude the best speaker export direction or angle of panorama sound effective value.According to acquisition scape
Sound speaker outlet orientation angle best information adjust automatically sound effect algorithms again, with the panorama sound that application scenario where obtaining is best
Effect.
Claims (3)
1. a kind of implementation method of TV panorama sound, it is characterised in that：TV is complete configured with main sound channel loud speaker and special generation
Scape sound effective value audio frequency process and the panorama sound loud speaker of output, the angle adjustable of panorama sound loud speaker tiltedly upward, TV are directed to
Panorama sound loud speaker is preset with N number of towards angle, Mic of the whole set of television equipped with radio reception；Method includes the following steps：
Step 1：TV sends out a test tone by main sound channel loud speaker and is recycled by Mic, and acquisition sound, which is issued to, to be recovered to
The delay T1 of the sound and intensity B1 for being recovered to sound, and store the detection parameters as main sound channel loud speaker；
Step 2：It is preset N number of one towards in angle to adjust the angle of panorama sound loud speaker tiltedly upward, and is adjusted every time
It is different towards angle；
Step 3：TV sends out a test tone by panorama loud speaker and is recycled by Mic, and acquisition sound, which is issued to, is recovered to sound
The delay T2 of the sound and intensity B2 for being recovered to sound, and store and join in the default detection towards angle as panorama sound loud speaker
Number；
Step 4：Step 2-3 is repeated until all default all detected towards the detection parameters of angle of panorama sound loud speaker finish；
Step 5：Every group of default detection parameters towards angle of panorama sound loud speaker are joined with the detection of main sound channel loud speaker one by one
Number is compared, and selects to influence minimum preset towards angle as the ideal towards angle of panorama sound loud speaker to listening to；
Step 6：Based on ideal towards the direction of angular adjustment panorama sound loud speaker, sound effect algorithms are adjusted towards angle according to ideal
Obtain best panorama sound effective value.
2. a kind of implementation method of TV panorama sound according to claim 1, it is characterised in that：Ideal direction in step 5
The determination method of angle is as follows：
Step 5-1：It calculates every group of default panorama sound loud speaker towards angle and reaches audience's listened position with main sound channel loud speaker
Time difference Δ T, Δ T=（T2-T1）/2,
Step 5-2：Every group of default panorama sound loud speaker towards angle is calculated to connect in audience's listened position with main sound channel loud speaker
Intensity difference the Δ B, Δ B=B2-B1 received；
Step 5-3：It is default towards the corresponding detection parameters of angle more than 10ms to reject time difference Δ T；
Step 5-4：Compare the default towards strong in the detection parameters of angle of the panorama sound loud speaker of all time difference Δ T≤10ms
The size of the value of the poor Δ B of degree, chooses the default reason towards angle as panorama sound loud speaker corresponding to intensity difference Δ B minimum values
Want towards angle.
3. a kind of implementation method of TV panorama sound according to claim 2, it is characterised in that：According to ideal in step 6
Towards angle adjustment sound effect algorithms, the specific method is as follows：
In main sound channel loud speaker ideal corresponding on the basis of panorama sound loud speaker original synchronous cant towards the time difference Δ T of angle
The difference processing that disappears of a mutual time difference Δ T is done,
Main sound channel loud speaker with panorama sound loud speaker in former intensity sounding on the basis of the corresponding ideal towards angle intensity difference
Δ B is a Bn*（1+ΔB/B）Δ B disappear difference processing, wherein B be test tone intensity, Bn be actual scene pronounce when send out
Intensity of sound.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104947A (en) * | 2020-09-11 | 2020-12-18 | 冠捷显示科技（厦门）有限公司 | Self-adaptive sound field control method and system |
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2018
- 2018-05-25 CN CN201810517835.2A patent/CN108769892A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0814638A2 (en) * | 1996-06-21 | 1997-12-29 | Yamaha Corporation | Three-dimensional sound reproducing apparatus and a three-dimensional sound reproduction method |
| CN1585567A (en) * | 2003-08-18 | 2005-02-23 | 日本先锋公司 | Method of mounting and driving speakers |
| CN101529930A (en) * | 2006-10-19 | 2009-09-09 | 松下电器产业株式会社 | Sound image positioning device, sound image positioning system, sound image positioning method, program, and integrated circuit |
| CN104380762A (en) * | 2012-06-29 | 2015-02-25 | 索尼公司 | Audio/video device |
| CN104703087A (en) * | 2015-02-16 | 2015-06-10 | 青岛海信电器股份有限公司 | Method and device for adjusting sound effect |
| CN104954930A (en) * | 2015-06-03 | 2015-09-30 | 冠捷显示科技（厦门）有限公司 | Method for automatically adjusting sound direction and time delay of audible device and achieving best sound effects |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112104947A (en) * | 2020-09-11 | 2020-12-18 | 冠捷显示科技（厦门）有限公司 | Self-adaptive sound field control method and system |
| CN112104947B (en) * | 2020-09-11 | 2022-08-09 | 冠捷显示科技（厦门）有限公司 | Self-adaptive sound field control method and system |
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Application publication date: 20181106 |
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