sndpeek is just what it sounds (and looks) like: real-time 3D animated display/playback can use mic-input or wav/aiff/snd/raw/mat file (with playback) time-domain waveform FFT magnitude spectrum 3D waterfall plot lissajous! (inte

his a simple method for silence removal and segmentation of audio streams that contain speech. The method is based in two simple audio features (signal energy and spectral centroid). As long as the feature sequences are extracted, as thresholding app

features to voice and un voice classification , pitch determination whith AMDF and other features like Spectral Centroid and Entropy of the energy

平均法、重心法、最小二乘法、S-K法，对谱数据进行滤波平滑-Average method, centroid method, least square method, SK method of spectral data smoothing filter