Record Details

Enhancement of alaryngeal speech using spectral subtraction

DSpace at IIT Bombay

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Field Value
 
Title Enhancement of alaryngeal speech using spectral subtraction
 
Creator PANDEY, PC
BHANDARKAR, SM
BACHHER, GK
LEHANA, PK
 
Subject artificial larynx
 
Description The transcervical electrolarynx is of great help to persons who cannot use their natural voice production mechanism. The device is held against the neck, and the vibrations generated move up the vocal tract to produce useful speech. The presence of background noise, caused by leakage of the acoustic energy from the vibrator, degrades the resulting speech. After formulating a theoretical basis, modified spectral subtraction method is used for speech enhancement. Average magnitude spectrum of noise, obtained with lips closed in training mode, is subtracted from the magnitude spectrum of the noisy speech and the signal is reconstructed using the original phase spectrum. It is observed that effective noise cancellation is obtained, if the noise estimation and subtraction is done using 2-pitch frames. The set of optimal values for processing parameters of the method are empirically obtained.
 
Publisher IEEE
 
Date 2011-10-26T21:51:22Z
2011-12-15T09:12:31Z
2011-10-26T21:51:22Z
2011-12-15T09:12:31Z
2002
 
Type Proceedings Paper
 
Identifier DSP 2002: 14TH INTERNATIONAL CONFERENCE ON DIGITAL SIGNAL PROCESSING PROCEEDINGS, VOLS 1 AND 2,591-594
0-7803-7503-3
http://dspace.library.iitb.ac.in/xmlui/handle/10054/16139
http://hdl.handle.net/100/2719
 
Source 14th International Conference on Digital Signal Processing (DSP 2002),Santorini, GREECE,JUL 01-03, 2002
 
Language English