Low bit rate speech enhancement using a new method of multiple impulse excitation

24 March 2005

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

Vol. 9, 17-20
https://doi.org/10.1109/icassp.1984.1172443

Abstract

One of the sources of degradation in LPC-synthesized speech is the mechanical quality due to a single impulse excitation per pitch period. This paper presents a simple method for extracting the amplitudes and locations of a multiple impulse excitation model. These multipulse parameters are obtained very easily from the autoregressive (LPC) residual. Additionally, a method is developed which allows a more accurate recomputation of the autoregressive coefficients based upon incorporating the multipulse excitation.

Keywords

BIT RATE
SPEECH ENHANCEMENT
LINEAR PREDICTIVE CODING
SPEECH SYNTHESIS
BANDWIDTH
PREDICTIVE MODELS
DEGRADATION
MEAN SQUARE ERROR METHODS
ITERATIVE ALGORITHMS
ITERATIVE METHODS

This publication has 1 reference indexed in Scilit:

Optimizing LPC filter parameters for multi-pulse excitation
Published by Institute of Electrical and Electronics Engineers (IEEE) ,2005