Audio codec fir filter

fir filter with optimum filter and with input is a audio signal and output is desired signal-fir filter with optimum filter and with input is a audio signal and output is desired signal

it is a fir filter with continuous input signal with audio signal

先对语音信号进行采集、播放，分析其频谱，对该信号源添加噪声，再播放音频并分析频谱，然后分别通过IIR低通、带通滤波器和FIR低通、带通滤波器，分别播放音频和得到滤波后的频谱。-Firstly， voice signal acquisition, play, analyze its spectrum to add noise to the signal source, and then play the audio spectrum analysis, and then were by IIR l