Title :
Speech de-noising system with non local means algorithm
Author_Institution :
Electron., Telecommun. & Inf. Technol. Fac., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
This paper presents how the non-local means (NLM) algorithm may be involved in speech signals de-noising. This algorithm can be implemented in real time using a digital signal processor (DSP) such as ADSP2181 from Analog Devices. The performance of NLM algorithm is evaluated and compared with a wavelet based de-noising algorithm. Implementation issues are discussed in order to develop a real time system.
Keywords :
digital signal processing chips; signal denoising; wavelet transforms; ADSP2181; NLM algorithm; analog devices; digital signal processor; nonlocal mean algorithm; real time system; speech denoising system; wavelet based denoising algorithm; Buffer storage; Digital signal processing; Noise; Noise reduction; Real time systems; Signal processing algorithms; Speech; digital signal processor (DSP); noise estimator; non-local means (NLM); real time implementation; wavelet;
Conference_Titel :
Electronics and Telecommunications (ISETC), 2010 9th International Symposium on
Conference_Location :
Timisoara
Print_ISBN :
978-1-4244-8457-7
DOI :
10.1109/ISETC.2010.5679261
