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A method for realizing 5.1 surround sound image adjustment

A stereo and sound image technology, applied in the audio field, can solve the problems of inaccurate adjustment of sound source direction, distortion, and inability to reproduce sound, so as to achieve the effect of high-fidelity output

Inactive Publication Date: 2016-12-14
NEWAUTO SILICON VALLEY VIDEO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) When adjusting the sound image, the frequency and amplitude of the sound cannot be reproduced truly, that is, there is distortion;
[0008] (2) The sense of direction of the sound source cannot be adjusted accurately

Method used

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  • A method for realizing 5.1 surround sound image adjustment
  • A method for realizing 5.1 surround sound image adjustment
  • A method for realizing 5.1 surround sound image adjustment

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Experimental program
Comparison scheme
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Embodiment 1

[0024] figure 1 It is a flowchart of a method for implementing 5.1 surround sound image adjustment provided by Embodiment 1 of the present invention.

[0025] Such as figure 1 Said, the method includes the following steps:

[0026] Step 101. Receive a mono signal.

[0027] Step 102. Obtain the coordinates of the sound image point and the horizontal and vertical range values ​​of the sound field of the mono signal in 5.1 surround sound, and the coordinate values ​​of the sound image point are within the horizontal and vertical range values ​​of the sound field .

[0028] Step 103, calculate the ratio of the mono signal in the 5.1 surround sound between the signal volumes of the 5 sound boxes through the coordinates of the sound image point and the horizontal and vertical range values ​​of the sound field, that is, calculate L:R: C: The ratio of Ls: Rs, where L represents the left front mono speaker, R represents the right front mono speaker, C represents the middle mono spe...

Embodiment 2

[0046] figure 2 It is a schematic diagram of implementing 5.1 surround sound speaker position control provided by Embodiment 2 of the present invention.

[0047] Such as figure 2 As mentioned above, speaker position control includes:

[0048] The 3 mono speakers are located in front of the scene, and the 2 surround sound speakers are located in the back of the scene. The larger square in front represents the subwoofer. Because the position of the subwoofer does not affect the position of the sound image point, it will not be discussed here.

[0049] The three mono speakers are arranged horizontally, the mono speakers on the left and right sides are symmetrical to the middle mono speaker, and the angle between the three speakers and the triangle formed by the center of the scene is 30° .

[0050] The two surround sound speakers are arranged horizontally, the surround sound speakers on the left and right sides are respectively arranged corresponding to the monophonic speake...

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Abstract

The invention discloses a method for realizing acoustic image adjustment of 5.1 surround sound. The method comprises the following steps of receiving a mono audio signal; obtaining semaphore of the mono audio signal and coordinate values of an acoustic image of the mono audio signal in 5.1 surround sound and horizontal and vertical range values of a sound field; calculating the semaphore of the mono audio signal in each sound box according to the specific value of semaphore of five sound boxes and the semaphore of the mono audio signal; obtaining the distribution situation of the mono audio signal in the 5.1 surround sound according to the semaphore of each sound box; and according to the distribution situation of the mono audio signal in the 5.1 surround sound and the coordinates of the current acoustic image point, after adjusting the semaphore of at least one sound box, overlapping the adjusted semaphore, thereby realizing the adjustment of the 5.1 surround sound. With the adoption of the method provided by the invention, high fidelity output of sound efficiency and amplitude can be realized, and the reproduction of the orientation perception of the sound can be realized.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a method for realizing 5.1 surround sound image adjustment. Background technique [0002] The vibration of the sound source causes the vibration of the surrounding air, that is, the change of air density. This vibration is transmitted to the ear, and the eardrum vibrates through the amplification of the auricle to hear the sound. [0003] The sound image is the image of the sound field in the human brain. It means that people close their eyes, place themselves in the sound field, and imagine the state of the sound source from the auditory experience, such as the direction, size, distance, etc. of the sound. [0004] Since the sound is transmitted to the human ear, it is a complicated process to cause human perception. The direction is judged according to the difference in sound pressure difference and time difference between the left and right human ears, and the distance of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R5/00
Inventor 郑明宝李庆庄
Owner NEWAUTO SILICON VALLEY VIDEO TECH