数字幅频均衡功率放大器的设计

Digital amplitude-Frequency Balanced Power Amplifier

本系统采用DSP作为主控制器，通过前置放大、滤波，经AD转换，采用芯片TMS320VC5402进行数字信号处理，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，最后通过低频功放将信号放大，并通过计算机辅助设计软件MATLAB将处理后的参数送入DSP，同时将信息在液晶屏上显示出来。

The system uses DSP as the main controller, through the preamp, filter, after AD conversion, the signal is sampled, the discretization of continuous signals, and then discrete Fourier transform （DFT） operation, in time domain and frequency domain audio each frequency component signal and power analysis and other indicators, at last, the signal amplified by low-frequency power amplifier, and through computer-aided design software MATLAB will be processed into parameters of DSP, while the information displayed on the LCD screen.