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上传时间: 2015-05-13
详细说明： The current Matlab-code can be used for real-time audio and image processing. Fixed-length segments of audio data are recorded from soundcard's input and an image is also captured in each block. In particular, the provided code does the following: - Repetively records audio segments of fixed length. - Plots the (applitude) values of the current audio segment. - Plots the spectogram of the current audio segment. - Calculates the mean and std values of the Zero Crossing Rate for each segment, and plots those statistics for the last five segments. - Calculates and plots the average spectral distance between the current and the previous audio segment. This is actually a simple measure of change detection in the audio information. - Captures and plots an image for each block (frame). - Plots an estimation of the motion between the current and the previous frames. - Plots the average absolute difference between two successive frames. - Calculates and displays the ratio of the processing time (for the feature calculation and the plotting processes) by the real signal data. ...展开收缩
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