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Audio compression method and device

An audio compression and audio technology, applied in the field of audio compression methods and devices, can solve problems such as the compression ratio cannot meet actual needs

Active Publication Date: 2021-08-20
ZHUHAI JIELI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in some application scenarios, for example, when only the voice content in the audio file is needed, and there is no need to approximate the waveform of the original audio file, the compression ratio obtained by the above method cannot meet the actual needs

Method used

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  • Audio compression method and device

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Embodiment Construction

[0050] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0051] The audio compression method provided by this application can be applied to such as figure 1 shown in the application environment. Wherein, the computer device 100 compresses the to-be-compressed audio 200 to obtain compressed data, where the computer device 100 may be, but not limited to, various personal computers, notebook computers, smart phones and tablet computers.

[0052] In one embodiment, such as figure 2 As shown, an audio compression method is provided, which is applied to figure 1 The computer equipment in , as an example, includes:

[0053] S101. ...

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Abstract

This application relates to an audio compression method and device. The computer equipment performs frame processing on the audio to be compressed to obtain each audio frame; when the audio frame is a periodic signal, the phoneme feature of the audio frame is extracted, and the phoneme feature satisfies the preset matching condition At least one audio frame is determined as a compression unit, and a key audio frame in the compression unit is determined; then, the compression unit is compressed based on a preset audio compression format to obtain the compressed data of the compression unit; wherein, the above-mentioned audio compression data It includes key waveform parameters, which are used to characterize a periodic waveform of a key audio frame. By adopting the above method, the compression ratio of audio compression can be greatly improved.

Description

technical field [0001] The present application relates to the technical field of audio coding, in particular to an audio compression method and device. Background technique [0002] Audio compression technology refers to the application of appropriate digital signal processing technology to the original digital audio signal stream to reduce its bit rate without loss of useful information or negligible loss, also known as compression coding. There are two main types of audio compression, namely lossy compression and lossless compression. Lossy compression, as the name implies, is to reduce the audio sampling frequency and bit rate, and the output audio file will be smaller than the original file. Another type of audio compression is called lossless compression, which can compress the volume of the audio file to be smaller on the premise of saving 100% of all the data in the original file, and after restoring the compressed audio file, it can achieve the same The files are t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/00G10L19/02G10L19/04G10L19/26
CPCG10L19/00G10L19/02G10L19/04G10L19/26
Inventor 方桂萍闫玉凤肖全之
Owner ZHUHAI JIELI TECH