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Wiener filter for Noise Reduction and speech enhancement

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3.3 | 6 ratings Rate this file 46 Downloads (last 30 days) File Size: 3.78 KB File ID: #24462 Version: 1.1

Wiener filter for Noise Reduction and speech enhancement

by

Pascal Scalart (view profile)

 

17 Jun 2009 (Updated )

Wiener Noise Suppressor based on Decision-Directed method with TSNR and HRNR algorithms.

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Description

The two-step noise reduction (TSNR) technique removes the annoying reverberation effect while maintaining the benefits of the decision-directed approach. However, classic short-time noise reduction techniques, including TSNR, introduce harmonic distortion in the enhanced speech. To overcome this problem, a method called harmonic regeneration noise reduction (HRNR) is implemented in order to refine the a priori SNR used to compute a spectral gain able to preserve the speech harmonics as proposed by Plapous et al.
("Improved Signal-to-Noise Ratio Estimation for Speech Enhancement", IEEE Transactions on ASLP, Vol. 14, Issue 6, pp. 2098 - 2108, Nov. 2006).

MATLAB release MATLAB 7.6 (R2008a)
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Comments and Ratings (12)
10 Jun 2016 Priyanka Vispute

how to define IS?
please reply as soon as possible..

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22 Apr 2016 Shichao Hu

Jakub was right. it works after changing data() to ns()

24 Sep 2015 cja

cja (view profile)

doesnt compile - data() doesnt exist. not sure what previous comment: data() to ns() means?

18 Sep 2013 souvik

souvik (view profile)

the code which is provided gets stuck at this point given below.
nsum = nsum + abs(fft(nwin,NFFT)).^2;
can you please help me out regarding this.
the error showing is
"Error using ==> mpower
Matrix must be square.

Error in ==> WienerNoiseReduction at 57
nsum = nsum + abs(fft(nwin,NFFT)).^2;"

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16 Mar 2012 T venkata bhargav  
25 Jun 2011 Michael Chan

Michael Chan (view profile)

how do u set 'IS'? zeros with the same length as the noisy signal?
I get silence.

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04 Jun 2011 upendra agrawal

Wiener filter for Noise Reduction

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24 May 2011 sachu

sachu (view profile)

 
16 Aug 2010 Taewoo Lee  
24 Nov 2009 Jakub Muran

You must change data() to ns() (ns - argument noise speech)

cavko bavko

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30 Sep 2009 Yun Sue

Is the code with any mistakes? In the file, syntax of "nsum = data(...) " can't be executed. Can anyone tell me what is this mistake when I am reading my noise file?

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18 Sep 2009 Yun Sue  
Updates
30 Jun 2009 1.1

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