DocumentCode
3457769
Title
Quantization noise estimation for log-PCM
Author
Konate, Mohamed ; Kabal, Peter
Author_Institution
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
fYear
2011
fDate
8-11 May 2011
Abstract
ITU-T G.711.1 is a multirate wideband extension for the well known ITU-T G.711 pulse code modulation of voice frequencies. The extended system is fully interoperable with the legacy narrowband one. In the case where the legacy G.711 is used to code a speech signal and G.711.1 is used to decode it, quantization noise may be audible. For this situation, the standard proposes an optional postfilter. The application of postfiltering requires an estimation of the quatization noise. In this paper we review the process of estimating this coding noise and we propose a better noise estimator.
Keywords
pulse code modulation; quantisation (signal); speech coding; ITU-T G.711 pulse code modulation; ITU-T G.711.1; LOG-PCM; coding noise; multirate wideband extension; optional postfilter; quantization noise estimation; speech signal; voice frequencies; Encoding; Estimation; Frequency domain analysis; Quantization; Signal to noise ratio; Speech; Postfilter; quantization noise;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical and Computer Engineering (CCECE), 2011 24th Canadian Conference on
Conference_Location
Niagara Falls, ON
ISSN
0840-7789
Print_ISBN
978-1-4244-9788-1
Electronic_ISBN
0840-7789
Type
conf
DOI
10.1109/CCECE.2011.6030680
Filename
6030680
Link To Document