The Design of Hardware Processing System Platform for Directional Sound Sources

The DSP pipeline serial structure restricts the performance of the system, while the FPGA parallel processing data high frequency sampling data to meet the design needs. Firstly, this paper introduces the FPGA processing chip and development process, designs the power amplifier circuit and does a detailed analysis. Secondly, the WM8731 audio processing chip and its workflow are introduced, and the design process of the directional sound source system is described. Then, the hardware platform and software program are integrated together to build the system test platform, and the generated test files are downloaded to the board, and the test data are recorded one by one at different angles within a certain distance after power-on. The test results are plotted on the directivity line graph, and the results show that the sound has strong directivity and high sound pressure intensity.