Claims:1. A method of estimating clean speech parameters from noisy speech parameters, said method comprising processor implemented steps of:

acquisition of speech signals using a speech acquisition module (202);
estimation of noise from said acquired speech signals using a noise estimation module (204);
computation of speech features from said acquired speech signals using a feature extraction module (206);
estimation of model parameters from the said computed speech features using a parameter estimation module (208);
estimation of clean parameters from said estimated noise and said estimated model parameters using a clean parameter estimation module (210);

2. The method as claimed in claim 1, wherein said speech acquisition module (202) further converts the said acquired speech signals from analog to digital waveforms.

3. The method as claimed in claim 1, wherein said estimation of noise using the noise estimation module is performed during training phase.

4. The method as claimed in claim 1, wherein said estimation of noise can further be performed through non-speech frames of said acquired speech signals.

5. The method as claimed in claim 1, wherein Mel-Frequency Cepstral Coefficients are used as said speech features in the feature extraction module.

6. The method as claimed in claim 1, wherein said estimated noise and said estimated model parameters are first converted into their spectral domain representations.

7. The method as claimed in claim 1, wherein the estimated clean parameters are in their spectral domain representation.

8. The method as claimed in Claim 7, wherein the estimated clean parameters are converted from their spectral domain representation to feature domain representation.

9. A system of estimating clean speech parameters from noisy speech parameters, said system comprising:

a processor;
a data bus coupled to said processor; and
a computer-usable medium embodying computer code, said computer-usable medium being coupled to said data bus, said computer program code comprising instructions executable by said processor and configured for operating
a speech acquisition module (202) adapted for acquiring speech signals;
a noise estimation module (204) adapted for estimating noise from said acquired speech signals;
a feature extraction module (206) adapted for computing speech features from said acquired speech signals;
a parameter estimation module (208) adapted for estimating model parameters from the said computed speech features;
a clean parameter estimation module (210) adapted for estimating clean parameters from said estimated noise and said estimated model parameters.

, Description:As Attached