本音频信号分析仪由32位MCU为主控制器，通过AD转换，对音频信号进行采样，把连续信号离散化，然后通过FFT快速傅氏变换运算，在时域和频域对音频信号各个频率分量以及功率等指标进行分析和处理，然后通过高分辨率的LCD对信号的频谱进行显示。该系统能够精确测量的音频信号频率范围为20Hz-10KHz，其幅度范围为5mVpp-5Vpp，分辨力分为20Hz和100Hz两档。测量功率精确度高达1 ,并且能够准确的测量周期信号的周期，是理想的音频信号分析仪的解决方案。-The audio signal analyzer 32-bit MCU-based controller by the through the AD conversion of the audio signal sampling, the discretization of continuous signals, and then FFT Fast Fourier Transform calculations, in the time domain and frequency domain of audio signals in various frequency indicators such as weight and power analysis and processing, and then high-resolution LCD to display the signal spectrum. The system can accurately measure the audio signal frequency range of 20Hz-10KHz, the magnitude of the range of 5mVpp-5Vpp, resolution is divided into two tranches of 20Hz and 100Hz. Power Measurement accuracy up to 1 , and an accurate measurement of periodic signal cycles, is the ideal audio signal analyzer solution.