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  • MatlabMentor

    Member • Aug 2, 2008

    contact us at <snipped> at yahoo com...please send more details about ur details and project details
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  • ednan

    Member • Aug 3, 2008

    but i cant understand the parameters used in it ...please if u help me out m very thank ful to u .

    %SPECTRALSUBTRACTION performs speech enhancement using spectral subtraction [OUT,PO]=SS(IN,FS,P)
    %
    % implementation of spectral subtraction algorithm
    % noisy speech IN with fs=FS enhanced by SS and returned in OUT, P is the algorithm parameters as bellow:
    % algorithm parameters: t* in seconds, f* in Hz, k* dimensionless
    % 1: tg = smoothing time constant for signal power estimate (0.04): high=reverberant, low=musical
    % 2: ta = smoothing time constant for signal power estimate used in noise estimation (0.1)
    % 3: tw = fft window length (will be rounded up to 2^nw samples)
    % 4: tm = length of minimum filter (1.5): high=slow response to noise increase, low=distortion
    % 5: to = time constant for oversubtraction factor (0.08)
    % 6: fo = oversubtraction corner frequency (800): high=distortion, low=musical
    % 7: km = number of minimisation buffers to use (4): high=waste memory, low=noise modulation
    % 8: ks = oversampling constant (4)
    % 9: kn = noise estimate compensation (1.5)
    % 10:kf = subtraction floor (0.02): high=noisy, low=musical
    % 11:ko = oversubtraction scale factor (4): high=distortion, low=musical
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  • t.lwinoo

    Member • Nov 26, 2008

    hello adnan,

    I'm doing the same thing for my final year project as well. Mine is on multi-channel speech enhancement. I am supposed to develop a simulation tool using MATLAB.

    Currently I have read loads of stuffs on microphone array processing, delay and sum beamforming, etc.... But I have no idea on how to start writing the code. Can someone give me a sample coding regarding this project? I'd like to refer to it to start off since my MATLAB knowledge is very low.
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  • sauravgoswami

    Member • Nov 27, 2008

    write the algorithm first,then develop each module and combine them,these are the basic things to write any code same applies here!!!......happy coding!!
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