No BSD License
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[deltaFs,fftSpect,halfSpect]=...
Compute the FFT on the sampled signal
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[fullFFT]=loudness2(fscale,co...
function: given a range of frequencies [inf,sup]
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[newcoeff]=loudness(fscale,co...
find the indexes in the frequency scale
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fullFFT=scaledown(coeff,n)
function: scale down the frequency components
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fullFFT=scaleup(coeff,n)
function: scale up the frequency components
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fullFFT=shiftdown(coeff,n)
shift down the frequencies by n steps
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fullFFT=shiftup(coeff,n)
wav file in PCM forma to morph
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mirrored=mirrorfft(newcoeff,c...
this function make consistent the FFT that has been modified
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newcoeff=pitchshift(coeff,nsh...
wav file in PCM forma to morph
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newspectrum=cthresh(spectrum,...
Thresholding funcion on the module of the spectrum
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playFile(y,Fs,filename)
play original
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plotSpectrum(fscale,spectrum)
function: plot the spectrum
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plotSpectrumColor(fscale,spec...
plot the magnitude
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plotTime(tscale,signal)
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assignment1a.m
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assignment1b.m
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assignment1c.m
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assignment1d.m
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assignment1e.m
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squaring.m
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View all files
Voice Audio Processing
by Paolo Di Prodi
22 Nov 2008
Basic processing of audio samples in wav format, using fourier transformation.
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| File Information |
| Description |
This is a set of scripts solving basic tasks for the processing of the human voice:
analysis of the spectrum
spectrum control equalization
spectrum shifting (up/down)
squaring
thresholding
It shows time-frequency duality, how to properly maipulate the FFT coefficients, how to plot the spectrum.
It contains a set of wav files to test the scripts and it's funny to listen to the audio produced: like metallic voice or male\female effects. |
| MATLAB release |
MATLAB 7.2 (R2006a)
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