Volume : I, Issue : XII, September - 2012

Implementation Of Advanced Speech Enhancement System On Tms320c6713 Dsk System.

N B Umashankar, Anand Jatti, Dr. S. C. Prasanakumar

Abstract :

In modern handsfree speech communication environments often occurs a situation that the speech signal is superimposed by background noises which are sometimes captured at a higher level than the speech signal of interest. In order to improve the intelligibility and reduce the listeners stress, a noise reduction procedure called speech enhancement is applied which increase the signal to noise ratio. This work employs implementation of some algorithms like MMSE–STA and MMSE–LSA in Matlab and compared with general spectral subtraction method. It was found that MMSE–LSA method yielded the best SNR and hence was chosen for real time implementation. A TIA/EIA/IS127 Compliant Speech Enhancement System based on MMSE–LSA algorithm was implemented using TMS320C6713 DSK system. The improvement in the SNR was found to be 20db. The developed algorithm could be used in real time application like mobile phones, heå aids and other speech activated devices.

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

N B Umashankar, Anand Jatti, Dr. S.C. Prasanakumar Implementation Of Advanced Speech Enhancement System On Tms320c6713 Dsk System. Indian Journal of Applied Research, Vol.I, Issue.XII September 2012

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