Title :
PLP Based CELP Speech Coder
Author :
Najafi, Jafar ; Marvi, Hossein
Author_Institution :
Fac. of Electr. & Robotic Eng., Shahrood Univ. of Technol., Shahrood, Iran
Abstract :
Perceptual linear prediction (PLP) is widely used in speech recognition systems as a feature extraction method. Also code-exited linear prediction coder (CELP) is one of the well known speech coders which widely used in communication systems. In this paper the application of PLP in speech coding has been discussed. In the first stage the parameters of formant synthesis filter are determined by applying PLP algorithms. Then these parameters are used in coder, code-exited linear prediction coder, to improve the efficiency of this kind of coder. The experiments show promising result in some cases.
Keywords :
feature extraction; filtering theory; speech coding; speech recognition; vocoders; code-exited linear prediction coder; feature extraction method; formant synthesis filter; perceptual linear prediction; speech coding; speech recognition systems; Auditory system; Cepstral analysis; Feature extraction; Filters; Humans; Predictive models; Signal synthesis; Speech coding; Speech recognition; Speech synthesis; CELP coder; Linear Prediction Coefficients; Perceptual Linear Prediction; Speech coder;
Conference_Titel :
Computer and Electrical Engineering, 2009. ICCEE '09. Second International Conference on
Conference_Location :
Dubai
Print_ISBN :
978-1-4244-5365-8
Electronic_ISBN :
978-0-7695-3925-6
DOI :
10.1109/ICCEE.2009.90
