Title :
Alternative window designs for the ETSI AMR speech coding standard
Author_Institution :
Media Lab., DoCoMo USA Labs, San Jose, CA, USA
Abstract :
Several windows are designed following an optimization procedure, with the target application being for linear prediction (LP) analysis within the ETSI adaptive multi-rate (AMR) coder. The goal is to explore the possibility of reducing the lengths of the windows so as to decrease computation. In addition, several windows are designed that are placed at different shifted positions with respect to the original with the objective of lowering the coding delay. It is shown that the alternative windows produce a similar perceptual quality with respect to the original, with the added benefits of reduced computational cost and lowered coding delay.
Keywords :
adaptive codes; delays; linear predictive coding; optimisation; speech coding; ETSI adaptive multirate speech coding standard; alternative window design; coding delay; linear prediction analysis; optimization; perceptual quality; Computational efficiency; Delay; Design optimization; Filters; Laboratories; Linear predictive coding; Sampling methods; Speech analysis; Speech coding; Telecommunication standards;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1291966
