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International Conference on Information Technology: Coding and Computing (ITCC'04) Volume 2
Source Signal based Rate Adaptation for GSM AMR Speech Codec
Las Vegas, Nevada
April 05-April 07
ISBN: 0-7695-2108-8
ASCII Text
x 
 
J. Makinen, J. Vainio, "Source Signal based Rate Adaptation for GSM AMR Speech Codec," Information Technology: Coding and Computing, International Conference on, vol. 2, pp. 308, International Conference on Information Technology: Coding and Computing (ITCC'04) Volume 2, 2004.
 
 
BibTex
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@article{ 10.1109/ITCC.2004.1286652,
author = {J. Makinen and J. Vainio},
title = {Source Signal based Rate Adaptation for GSM AMR Speech Codec},
journal ={Information Technology: Coding and Computing, International Conference on},
volume = {2},
year = {2004},
isbn = {0-7695-2108-8},
pages = {308},
doi = {http://doi.ieeecomputersociety.org/10.1109/ITCC.2004.1286652},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - CONF
JO - Information Technology: Coding and Computing, International Conference on
TI - Source Signal based Rate Adaptation for GSM AMR Speech Codec
SN - 0-7695-2108-8
SP
EP
A1 - J. Makinen,
A1 - J. Vainio,
PY - 2004
KW - null
VL - 2
JA - Information Technology: Coding and Computing, International Conference on
ER -
 
J. Makinen, Nokia Research Center
J. Vainio, Nokia Research Center
Adaptive Multi-Rate (AMR) codec [AMR Speech Codec; Transcoding functions] was standardised for GSM in 1999. AMR offers substantial improvement over previous GSM speech codecs [Digital cellular telecommunications system; Performance Characterization of the Adaptive Multi-Rate (AMR) Speech Codec; ETSI Technical Report] in error robustness by adapting speech and channel coding depending on channel conditions. However, current standard do not exploit the multi-rate capability of AMR codec in source signal based adaptation that would optimise the average bit-rate vs. quality trade-off. This paper presents a source signal based rate adaptation algorithm for AMR codec in GSM system. Together with fast power control, it can be used to increase the system capacity and further increase the robustness of GSM AMR codec.
Citation:
J. Makinen, J. Vainio, "Source Signal based Rate Adaptation for GSM AMR Speech Codec," itcc, vol. 2, pp.308, International Conference on Information Technology: Coding and Computing (ITCC'04) Volume 2, 2004
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