By Topic

Speech Enhancement using Source Features and Group Delay Analysis

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Prasanna, S. ; Department of Electronics and Communication Engineering Indian Institute of Technology Guwahati, Guwahati-781039, India, Email: prasanna@iitg.ernet.in ; Krishna Moorthy, P. ; Yegnanarayana, B.

A method is proposed for enhancement of speech degraded by background noise and reverberation, which is collected simultaneously over several microphones. Each microphone signal is processed by the Linear Prediction (LP) analysis to extract the Hilbert envelope of the LP residual. The time-delays are estimated and the Hilbert envelopes of the LP residuals from all the microphones are added coherently. The coherently-added Hilbert envelope is processed by the the group delay analysis to derive a weight function. The LP residual of the coherently-added speech signal is multiplied with the weight function to produce a modi.ed LP residual in which the excitation part of speech is enhanced. The speech signal synthesized from the modi.ed LP residual is found to be perceptually enhanced signi.cantly.

Published in:

INDICON, 2005 Annual IEEE

Date of Conference:

11-13 Dec. 2005