Flexible quantization of audio and speech based on the autoregressive model
2007 (English)In: CONFERENCE RECORD OF THE FORTY-FIRST ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1-5, NEW YORK: IEEE , 2007, 535-539 p.Conference paper (Refereed)
We describe a coding scheme based on audio and speech quantization with an adaptive quantizer derived from the autoregressive model under high-rate assumptions. The main advantage of this scheme compared to state-of-the-art training-based coders is its flexibility. The scheme can adapt in real time to any particular rate and has a computational complexity independent of the rate. Experiments indicate that, compared with a non-scalable conventional fixed-rate code-excited linear predictive (CELP) coding scheme, our real time scalable coder with scalar quantization performs at least as well in the constrained entropy case, and has nearly identical performance for the constrained resolution case.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2007. 535-539 p.
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-36116DOI: 10.1109/ACSSC.2007.4487270ISI: 000257172900101ScopusID: 2-s2.0-50249148999OAI: oai:DiVA.org:kth-36116DiVA: diva2:430573
41st Asilomar Conference on Signals, Systems and Computers Pacific Grove, CA, NOV 04-07, 2007
QC 201107112011-07-112011-07-082011-07-11Bibliographically approved