DocumentCode
3016819
Title
A new approach to noise-robust LPC
Author
Wrench, A.A. ; Cowan, C.F.N.
Author_Institution
University of Edinburgh, Edinburgh, U.K.
Volume
12
fYear
1987
fDate
31868
Firstpage
305
Lastpage
307
Abstract
In this paper a new spectral estimate of noisy speech derived from linear predictive Autoregressive(AR) analysis is compared with the spectra produced by single order Linear Predictive Coding(LPC). The new estimate consists of a bin-by-bin average cf a set of linear prediction AR spectra with orders between 10 and 30. According to simulation results the improvement in peak centre frequency and bandwidth estimation resulting from using this model for noisy speech is equivalent to increasing the SNR by about 5dB when the SNR of the input signal is 20dB or less.
Keywords
Autoregressive processes; Bandwidth; Degradation; Linear predictive coding; Noise robustness; Parameter estimation; Signal to noise ratio; Speech analysis; Speech enhancement; White noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '87.
Type
conf
DOI
10.1109/ICASSP.1987.1169678
Filename
1169678
Link To Document