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Audio signal processing method and device

An audio signal processing and signal technology, which is applied in signal processing, speech analysis, transducer circuits, etc., and can solve the problems of reducing the audio output effect of the audio system.

Active Publication Date: 2021-04-30
KTMICRO ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Harmonic distortion refers to the harmonic components that the output signal has more than the input signal, and this kind of harmonic will cause the audio output effect of the audio system to be greatly reduced

Method used

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  • Audio signal processing method and device
  • Audio signal processing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Please see figure 1 , figure 1 A schematic flowchart of an audio signal processing method is provided for the embodiment of the present application. Wherein, the audio signal processing method includes:

[0050] S101. Receive a single tone test signal.

[0051] In this embodiment, before the method is executed in the process, it is also possible to give priority to load mounting according to the actual situation, so that the DAC Driver mounts the same load as the same application scenario, thereby avoiding different THD (total harmonic load) caused by different loads. wave distortion) situation.

[0052] In this embodiment, the single-tone test signal received by this method may be a 1 kHz digital signal.

[0053] S102. Acquire a fundamental wave signal and a harmonic signal included in the single tone test signal.

[0054] In this embodiment, the harmonic signal at least includes a fifth harmonic sub-signal, a fourth harmonic sub-signal, a third harmonic sub-signa...

Embodiment 2

[0073] Please see figure 2 , figure 2 It is a schematic flowchart of an audio signal processing method provided by the embodiment of the present application. Such as figure 2 As shown, wherein, the audio signal processing method includes:

[0074] S201. Receive a single tone test signal.

[0075] In this embodiment, before the method is executed in the process, it is also possible to prioritize the load mounting according to the actual situation, so that the DAC Driver mounts the same load as the same application scenario, thereby avoiding different THD (total harmonic load) caused by different loads. wave distortion) situation.

[0076] In this embodiment, the single-tone test signal received by this method may be a 1 kHz digital signal.

[0077] S202. Acquire a fundamental wave signal and a harmonic signal included in the single tone test signal.

[0078] In this embodiment, the harmonic signal at least includes a fifth harmonic sub-signal, a fourth harmonic sub-sig...

Embodiment 3

[0097] Please see image 3 , image 3 It is a schematic structural diagram of an audio signal processing device provided in an embodiment of the present application. Such as image 3 As shown, the audio signal processing device includes:

[0098] a receiving unit 310, configured to receive a single tone test signal;

[0099] An acquisition unit 320, configured to acquire a fundamental wave signal and a harmonic signal included in the single-tone test signal;

[0100] A determining unit 330, configured to determine a harmonic compensation coefficient according to the fundamental wave signal and the harmonic signal;

[0101] The processing unit 340 is configured to perform harmonic compensation processing on the audio input signal according to the harmonic compensation coefficient to obtain an audio digital signal.

[0102] In the embodiment of the present application, for the explanation of the audio signal processing device, reference may be made to the description in Emb...

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Abstract

The embodiment of the invention provides an audio signal processing method and device. The audio signal processing method comprises the following steps: receiving a single-tone test signal; obtaining a fundamental wave signal and a harmonic wave signal included in the single-tone test signal; determining a harmonic compensation coefficient according to the fundamental wave signal and the harmonic signal; and performing harmonic compensation processing on the audio input signal according to the harmonic compensation coefficient to obtain an audio digital signal. Visibly, by implementing the implementation mode, the interference of the harmonic waves on the audio output effect can be reduced, so that the audio output effect is improved.

Description

technical field [0001] The present application relates to the technical field of audio processing, and in particular, to an audio signal processing method and device. Background technique [0002] Harmonic distortion means that the output signal has more harmonic components than the input signal, and such harmonics will cause the audio output effect of the audio system to be greatly reduced. Therefore, how to solve the problem of reducing the output of audio effects caused by harmonics has become one of the problems that engineers need to solve urgently. Contents of the invention [0003] The purpose of the embodiments of the present application is to provide an audio signal processing method and device, which can reduce the interference caused by harmonics to the audio output effect, thereby improving the audio output effect. [0004] The first aspect of the embodiment of the present application provides an audio signal processing method, including: [0005] Receive a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/02G10L21/003H04R3/00G10L21/007G10L25/78
CPCG10L21/02G10L21/003G10L21/007H04R3/00G10L25/78H04R2430/00Y02E40/40
Inventor 李锡广李振王蕊
Owner KTMICRO ELECTRONICS
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