对原始语音进行上采样和下采样，分析对比他们的时域图和频谱图。最后对比原始语音、75HZ激励、150HZ激励以及噪声激励下的效果-SOME SIMPLE MANIPULATIONS OF SOUND USING DIGITAL SIGNAL PROCESSING The original sound and its spectrogram Downsampling the waveform downsampling Upsampling the waveform Li

基于matlab GUI的音频信息处理系统，具有声音录制、播放、暂停、渐弱、渐强、倒放、快放、回音、合成、滤波、变换声道、绘制波形曲线等功能-Matlab GUI-based audio information processing system, with sound recording, playback, pause, fade, gradually strong, rewind, fast release, echo, synthesis, filtering, channel chan

this is about digital signal processing, about filter the unwanted noise for the sound -the unwanted noise will remove when apply two filter on the matlab. using the filter to filter on the noise.

用matlab语言实现的简单的音频处理软件，有界面，能对声音文件进行一些编辑-Matlab language of simple audio processing software, interface, able to make some editing sound files