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Multi-channel Audio Soft Coding Mechanism Based on FPGA Embedded System

A post-encoding and video technology, applied in speech analysis, instrumentation, selective content distribution, etc., can solve the problems of audio encoding chips increasing the procurement cost of the encoding 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: 2021-02-26
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 object, technical solution and advantages of the present invention clearer, the present invention 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 invention, not to limit the present invention.

[0023] In the process of decoding multi-channel audio, 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. Extended 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 platfor...

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Abstract

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. This solution extracts the effective PCM data of the original audio data of each input channel through the FPGA embedded system, uses DDR to complete the interaction between the pre-encoded PCM frame and the encoded ES frame for the PCM data, and writes the PTS value synchronized with the video Corresponding PES frame header and output. The purpose of the invention of the present invention is to provide a kind of multi-channel audio soft coding mechanism based on FPGA embedded system, adopt the technical scheme that the present invention provides can receive and process the original digital audio data of multiple channels in parallel, produce to each channel PCM audio frame The PTS value synchronized with the video, and maintain this 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 monophonic to stereophonic, and to multi-channel development. The most widely used multi-channel surround sound configuration is the 5.1 sound system recommended by ITU-R. channel 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 the multimedia system is also increasing, and the number of audio files 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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