Audio decoding circuit and method based on multi-core chip

An audio decoding and multi-core technology, applied in speech analysis, instruments, etc., can solve the problems of running time and other problems, and achieve the effect of low cost, simple peripheral devices, and easy implementation

Pending Publication Date: 2018-12-21
GUANGZHOU BAOLUN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional single-chip solution realizes one MP3 soft decoding, which has already taken up most of the running time, and the remaining running time needs to deal with application logic, so it is not feasible to realize multi-channel audio soft decoding

Method used

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  • Audio decoding circuit and method based on multi-core chip
  • Audio decoding circuit and method based on multi-core chip
  • Audio decoding circuit and method based on multi-core chip

Examples

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Embodiment 1

[0028] Such as figure 1 and figure 2 As shown, this embodiment provides an audio decoding circuit based on a multi-core chip, including a multi-core processing chip and an audio output module. The multi-core processing chip includes a decoding buffer module, an audio output buffer module and a processing module. The decoding buffer module and the audio output buffer module are all electrically connected to the processing module; the multi-core processing chip is provided with a storage interface, and the storage interface is used to connect with an external memory. Generally, the external memory adopts an SD card to store Information, in this embodiment, the external memory stores multiple audio files, but it can also store a single audio file, but for a single audio file, the existing methods are all implemented in this way, so there is no need for It is described in detail; however, the method of storing multiple audio files in the memory and reading them at the same time ...

Embodiment 2

[0033] Such as image 3 As shown, the present embodiment provides a multi-core chip-based audio decoding method, comprising the following steps:

[0034] S1: read the original audio data in each audio file by the FATFS file module, and store the original audio data in different decoding cache modules; the audio data in the present embodiment all adopt the audio data of MP3 format, but in specific When implemented, other audio files in non-MP3 format are also applicable. However, the corresponding decoder chip needs to be replaced.

[0035] S2: Read the original audio data in the decoding buffer module, decode and convert it into PCM audio data and store it in the audio output buffer module.

[0036] Each MP3 decoding thread is allocated with MP3 decoding buffer and audio output buffer; MP3 decoding buffer is used to store MP3 original data generated by MP3 file reading processing thread, and MP3 decoding thread reads buffered data and decodes it into PCM audio data; audio ou...

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Abstract

The invention discloses an audio decoding circuit and method based on a multi-core chip. The circuit comprises a multi-core processing chip and an audio output module, wherein the multi-core processing chip is arranged at a storage interface, the storage interface is used for connecting with an external memory, the multi-core processing chip is used for decoding and converting received audio original data into a PCM audio data and transmitting the data to the audio output module, and the audio output module is used for receiving the PCM audio data and outputting an audio signal. The inventionfurther discloses an audio decoding method based on the multi-core chip. The audio decoding circuit is advantaged in that the audio decoding circuit is enabled to analyze multiple paths of audio datathrough setting the multi-core chip, multi-path music playing demand of customers is satisfied, the cost is low, peripheral devices are simple, and the audio decoding circuit is convenient to implement.

Description

technical field [0001] The invention relates to the technical field of audio broadcasting, in particular to an audio decoding circuit and method based on a multi-core chip. Background technique [0002] At present, in small and medium-sized broadcasting systems, MP3 music playback is often used, and the application requirements for multi-channel MP3 music playback are very common. The traditional single-chip solution to achieve one MP3 soft decoding has already taken up most of the running time, and the remaining running time needs to process application logic, so it is not feasible to realize multi-channel audio soft decoding. Therefore, it is a technical problem to be solved by those skilled in the art to produce a low-cost multi-channel audio decoding solution suitable for small and medium-sized broadcasting systems. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/008G10L19/16
CPCG10L19/008G10L19/173
Inventor 张常华
Owner GUANGZHOU BAOLUN ELECTRONICS CO LTD
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