Audio processing method, device and non-transitory computer-readable medium

Abstract

An audio processing method. This audio processing method comprises the steps of: dividing an audio file into a plurality of audio sections by a processor; and compressing a plurality of audio sections by a processor to generate a plurality of compressed audio sections, including: down-sampling in a plurality of audio sections to generate a first compressed audio section of the plurality of compressed audio sections, wherein a first target bandwidth of the first audio section is less than a bandwidth threshold; and sampling a first audio section of the plurality of audio sections Two audio segments are used to generate a second compressed audio segment of the plurality of compressed audio segments, and a delay time is added to the second compressed audio segment, wherein the second target bandwidth of the second audio segment is not less than the bandwidth threshold. This implementation compresses the audio data stream more effectively when the bandwidth changes, and prevents the audio from being discontinuous and popping.

Description

technical field [0001] The disclosure relates to an audio processing method, device and non-transitory computer-readable medium, and in particular to an audio processing method, device and non-transitory computer-readable medium for compressing audio files. Background technique [0002] Traditionally, if you want to send an audio file to an audio playback device through a wireless transmission protocol that only supports low bandwidth such as Bluetooth, you need to use a distorted / lossy compression method such as MP3 format to greatly reduce the amount of data. However, larger Compression ratios tend to distort the audio, producing pops or pops. [0003] In addition, the general compression technology usually involves a large number of calculations such as converting audio files between the time domain and the frequency domain. Therefore, the continuous audio data stream can be divided into fixed-size audio segments (frames) for calculation and compression. The terminal dec...

AI Technical Summary

Problems solved by technology

Usually a larger audio region will have better compression efficiency, but too large an audio region will increase the delay of the sound and require a larger memory

However, small playback devices such as Bluetooth headsets, Bluetooth speakers, etc. usually only have a microprocessor with low processing power and a small storage space, so when performing decompression of audio files, these small playback devices will consume a long processing time , instead of real-time playback

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