Vuvuzela sound denoising algorithm

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

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

The author wishes to acknowledge the following in the creation of this submission:
Boll Spectral Subtraction
This submission has inspired the following:
Vuvuzela filtering with parametric equalizers using System objects

• MATLAB release: MATLAB 7.3 (R2006b)

[Rob Campbell]

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

[Choqueuse Vincent]

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

[Sebastien Paris]

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

[Nicolas Cusseau]

Thanks for the link.

Sebastien, are u sure Audionamix uses spectral substraction?

[Paul Barnard]

 

[Nicolas Cusseau]

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

[Tanyer Alan]

 

[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.

[Peter O'Connor]

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