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Published byAdriel Shenton Modified about 1 year ago

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SOUND with MATLAB

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SOUND INPUT [a, fa, na]= wavread(’mim-44100.wav') Sound data Sampling Frequency #bit representation

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a = ….. -0.0001 0.0001 ……. fa = 44100 na = 16 Teknik Multimedia Fakultas Ilmu Komputer UI 3

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SAMPLING sound(a, 44100) sound(a, 16000) sound(a, 11025) sound(a, 8000) 4

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WRITING SAMPLED SOUND wavwrite(a, 30000, ‘gbush-30000.wav’) PLOTTING plot(a) Teknik Multimedia Fakultas Ilmu Komputer UI 5

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Working with Frequency Domain - use discrete cosine transform or discrete fourier transform to convert from wave spatial signal to frequency domain; in matlab we could use fft function transform = fft(a, fs) fs = the number of sample frequency misal transform = fft (a, 41500) Learning Introductory Signal Processing Using Multimedia 6

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SOUND with AUDACITY Demonstrated in class

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