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Vuvuzela sound denoising algorithm

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16 Jun 2010 (Updated )

This script implements a sound denoising algorithm in Matlab for vuvuzela sound cancelation.

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Description

The sound denoising algorithm is based on the popular spectral subtraction technique. Based on the spectrum of the vuvuzela sound, this denoising technique simply computes an antenuation map in the time-frequency domain. Then, the audio signal is restored by computing the inverse STFT. See [1-3] for more detail about the algorithm.

The zip file contains:

- the vuvuzela_denoising.m file
- the vuvuzela.wav audio file

To hear the result of this algorithm, go directly to: http://soundcloud.com/choc29/vuvuzela-correction-with-matlab

Note that better denoising audio results could be obtained by properly tuning the algorithm parameters.

References:

[1] Steven F. Boll, "Suppression of Acoustic Noise in Speech Using Spectral Subtraction", IEEE Transactions on Signal Processing, 27(2),pp 113-120, 1979

[2] Y. Ephraim and D. Malah, “Speech enhancement using a minimum mean square error short-time spectral amplitude estimator,” IEEE. Transactions in Acoust., Speech, Signal Process., vol. 32, no. 6, pp. 1109–1121, Dec. 1984.

[3] S. Mallat, "A Wavelet Tour of Signal Processing", Academic Press, 3rd edition, 2008.

Acknowledgements

Boll Spectral Subtraction inspired this file.

This file inspired Vuvuzela Filtering With Parametric Equalizers Using System Objects.

MATLAB release MATLAB 7.3 (R2006b)
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Comments and Ratings (9)
01 Jun 2011 Peter O'Connor

If you take the time to turn this nasty script into a respectable function, it actually works pretty nicely. very useful

26 Jan 2011 Siva Chandren Kandasamy

1)can anyone explain how the program works from start till end? please help. urgent. im currently doing a project using spectral subtraction technique to reduce noise in audio file.
2)how i can edit this program to use for noise reduction in audio file? i use this program and change the wave file to a song with noise. the result i got is it reduce the music too. please help me. urgent. thanks in advance.

02 Aug 2010 Tanyer Alan  
19 Jun 2010 Nicolas Cusseau

Does somebody look for a Simulink model ?
http://www.mathworks.com/matlabcentral/fileexchange/16646

18 Jun 2010 Paul Barnard  
18 Jun 2010 Nicolas Cusseau

Thanks for the link.

Sebastien, are u sure Audionamix uses spectral substraction?

17 Jun 2010 Sebastien PARIS

Excellent :) .... Canal + is already using your algorithm ;)

16 Jun 2010 Choqueuse Vincent

Maybe you can try to convert it into a Simulink model ?!? ;-)

16 Jun 2010 Rob Campbell

I'll give you 5* if you can tell me how to process the audio from the browser in real-time. :-)

Updates
18 Jun 2010

more efficient method

19 Jun 2010

Axes added on the spectrogram

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