Audio signal compensation method, device and system

A technology of audio signal and compensation method, which is applied in signal processing, sensor parts, sensors, etc., can solve the problems of poor sound effect improvement and achieve the effect of improving sound effect

Active Publication Date: 2019-02-01
HUAWEI TECH CO LTD +1
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Problems solved by technology

[0005] In order to solve the problem that the compensation method in the related art has a poor effect on improving the sound effect, the application provides an audio signal compensation method, device and system

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  • Audio signal compensation method, device and system
  • Audio signal compensation method, device and system
  • Audio signal compensation method, device and system

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Embodiment Construction

[0057] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0058] figure 1 It is a schematic diagram of an application scenario of an audio signal compensation method provided by an embodiment of the present invention, refer to figure 1 , the audio signal compensation method can be used to compensate the interior space of the vehicle, and the interior space of the vehicle can be provided with a sound source device and a plurality of loudspeakers. E.g figure 1 In the interior space of the five-seater car shown, six speakers 01 and one sound source device 02 are installed. The six speakers are respectively located directly in front of the driver’s seat, directly in front of the passenger’s On the right side of the driver's seat and on both sides of the rear seat. The sound source device...

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Abstract

The invention discloses an audio signal compensation method, device and system, and belongs to the technical field of acoustics. The method comprises the following steps: acquiring M loudspeakers arranged in an audio play space and a room impulse response matrix of the audio play space between L receiving points in the audio play space; calculating a theoretical sound pressure value at each of theL receiving points of the sound played by each of the M loudspeakers to obtain an ideal sound field matrix; calculating a filter coefficient based on the room impulse response matrix and the ideal sound field matrix; and compensating M paths of audio signals by adopting the filter coefficient to obtain M paths of compensation signals. According to the audio signal compensation method provided bythe invention, the audio signals are compensated by using the calculated filter coefficient, so that the actual sound field of the audio signals output by the loudspeakers can be approximated to the ideal sound field to a certain extent, and an acoustic coloring problem caused by the reflected sound in the audio play space is eliminated, thereby effectively improving the sound effect of a sound system in the audio play space.

Description

technical field [0001] The present application relates to the technical field of acoustics, in particular to an audio signal compensation method, device and system. Background technique [0002] With the rapid development of acoustic technology, people pay more and more attention to the sound effect of the sound system. In addition to the performance of the audio equipment itself, the acoustic environment in which the audio system is located is also a key factor affecting the sound effect. [0003] In the related art, in order to improve the acoustic effect in a closed space (such as the interior space of a car), the commonly used method is mainly a passive compensation method. In this method, a large number of sound-absorbing materials are added in a closed space to absorb components that damage human hearing experience during the transmission of audio signals, such as high-frequency noise or low-frequency noise, so as to achieve the purpose of improving the sound effect a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R3/00H04R2430/00H04R2499/13
Inventor 胡瑞敏王晓晨徐家望张茂胜方博伟覃景繁李贤胜
Owner HUAWEI TECH CO LTD
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