Audio signal processing based on MATLAB
2016-08-23
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In the MATLAB environment programs IIR,FIR digital filter design, and audio signal analysis and processing using digital filters. According to the audio using bilinear transformation method and window functions on different filter the audio signal into separate, and analysis. Function waivereader to sample audio signals using sound playback statement (s) play, plot to draw the original signal's waveform in time domain, drawn after the original signal spectrum of Fourier transform. High/low design of IIR Butterworth filters. The parameters according to the need to determine the spectral characteristics, by observing the spectrum parameters determination of cut-off frequency and converted to numerical targets. Using butter creates Butterworth analog filter, then using bilinear transformation method of realizing digital filter analog filter to convert. Design of Chebyshev band-pass filter. By Hanning window function design method FIR filters window, complete digital f
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