Design and Implementation of Audio Encoder Based on Zynq

This experiment uses ZYNQ-7000 series products to design the audio encoder under the local area network to realize the conversion function from audio stream to IP stream. On the ZYNQ platform, it can not only give play to the advantages of FPGA parallel computing, but also have the flexibility of the processor system, which can realize high-speed data acquisition and real-time processing. In this system, the software and hardware coordination method are adopted to realize the continuous cycle generation of data sources on the PL side, and the AXI-DMA IP core is used to store the data in the DDR, and operating system on the PS side reads the data in the DDR and compresses the audio through the FFmpeg library and pushes it to SRS, and finally uses the VLC player to pull the stream to achieve the effects of encoding, pushing and playing. The construction of this system has certain practical significance for the on-demand audio program.