说明：  使用GUI界面编程技术，实现了一个通信信道的均衡，可以很方面实现可靠传输。
(EQUALIZER starts an equalizer for audio input on a PC. This is created as a demonstration of ANALOGINPUT and GUI. It performs real-time power spectral density estimation on acquired audio data and displays them in frequency bins. This may not be how a real equalizer works, so it should be used simply as a demo. )