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Wiener filter for Noise Reduction and speech enhancement

version 1.1 (3.78 KB) by

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

4.14286
9 Ratings

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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).

Comments and Ratings (16)

robert nimon

what define IS?
as foreigner to english I can't explain myself the meaning of IS (Initial Silence )
Please reply me as soon as possible

Thanks..

Jose Alberto

Michal Tom

Michal Tom

some of the foreigners may not understand the programs which are in english.but i can see this,haha...

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

Shichao Hu

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

cja

cja (view profile)

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

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;"

Michael Chan

Michael Chan (view profile)

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

Wiener filter for Noise Reduction

sachu

sachu (view profile)

Taewoo Lee

Jakub Muran

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

cavko bavko

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?

Yun Sue

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