中圖分類號(hào)： TP216
文獻(xiàn)標(biāo)識(shí)碼： A
DOI：10.16157/j.issn.0258-7998.211983
中文引用格式： 張皓然，萬書芹，蔣穎丹，等. 基于FPGA的多通道音頻信號(hào)評(píng)估系統(tǒng)[J].電子技術(shù)應(yīng)用，2022，48(2)：78-83，90.
英文引用格式： Zhang Haoran，Wan Shuqin，Jiang Yingdan，et al. Evaluation system of multi-channel audio signal based on FPGA[J]. Application of Electronic Technique，2022，48(2)：78-83，90.

Evaluation system of multi-channel audio signal based on FPGA

Abstract： A six-channel audio signal evaluation system based on FPGA is designed and implemented.64 kS/s 16-bit analog-to-digital converter(ADC) AD73360 is used to sample common-used audio signals. A nested state machine is adopted to pump input data into a FIFO according to states jumps. The data in FIFO is uploaded into the MATLAB GUI(Graphical User Interface) on computer by USB protocol. The GUI is used to process data and display the results. The system is equipped with auxiliary ARM to calculate and correct the baud rate of communication between FPGA and GUI, keeping from losing codes. The results show the system can sample audio signals in a high precision. The system provides a whole solution for sampling audio signals with true fidelity.

Key words : FPGA；nested state machine；FIFO；analog-to-digital converter；MATLAB GUI