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Multi-channel audio soft coding mechanism based on FPGA embedded system

A multi-channel audio and audio coding technology, which is applied in speech analysis, instruments, electrical components, etc., can solve the problems of audio coding chips increasing the procurement cost of the coding system, increasing the complexity of the design, prolonging the design cycle, etc., so as to save procurement costs , Reduce design complexity, low cost effect

Active Publication Date: 2017-06-20
HUIZHOU WELLAV TECH
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Problems solved by technology

Increasing the number of audio encoding chips will undoubtedly increase the procurement cost of the encoding system. Various audio encoding chips have special requirements for encoding formats and control methods, which increases the complexity of the design and prolongs the design cycle.

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  • Multi-channel audio soft coding mechanism based on FPGA embedded system
  • Multi-channel audio soft coding mechanism based on FPGA embedded system
  • Multi-channel audio soft coding mechanism based on FPGA embedded system

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Embodiment Construction

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0023] In the process of multi-channel audio decoding, increasing the number of audio encoding chips will undoubtedly increase the purchase cost of the encoding system. Various audio encoding chips have special requirements for encoding formats and control methods, which increase the complexity of the design. Extend the design cycle.

[0024] In order to solve the above technical problems, this embodiment discloses a multi-channel audio soft coding mechanism based on an FPGA embedded system. The technical solution provided by this embodiment uses an embedded FPGA chip as an implementation platf...

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Abstract

The invention relates to the technical field of broadcast television and multimedia, and particularly relates to a multi-channel audio soft coding mechanism based on an FPGA embedded system. The FPGA embedded system is adopted to extract the effective PCM data of the original audio data of each input channel, the DDR is adopted to complete the PCM frame before the coding and the ES frame after the coding interaction of the PCM data, and the PTS value synchronized with the video is written to the corresponding PES frame header and output. The invention aims to provide a multi-channel audio soft coding mechanism based on an FPGA embedded system. The multi-channel audio soft coding mechanism can parallelly receive and process the multichannel original digital audio data, generates the PTS value synchronized with the video for the PCM audio frame of each channel, maintains the correspondence to the encoded PES frame and PTS value to ensure audio and video synchronization.

Description

Technical field [0001] The invention relates to the technical field of broadcast television and multimedia, in particular to a multi-channel audio soft coding mechanism based on an FPGA embedded system. Background technique [0002] In the field of radio, television and multimedia, people's requirements for audio quality are constantly improving, from mono to stereo, and to multi-channel development. The most widely used multi-channel surround sound configuration is 5.1 sound recommended by ITU-R Road configuration. And the same video can have multiple dubbing, such as multiple languages. With the continuous improvement of industrial technology, the number of video programs supported by multimedia systems is also increasing, and the number of audio corresponding to the video will also increase proportionally. Increasing the number of audio encoding chips will undoubtedly increase the procurement cost of the encoding system. Various audio encoding chips have special requirements...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L19/008H04N21/43H04N21/439
CPCG10L19/008H04N21/4307H04N21/439
Inventor 李科邹伟华
Owner HUIZHOU WELLAV TECH
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