A low-delay audio coder with constrained-entropy quantization
2007 (English)In: 2007 IEEE WORKSHOP ON APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, NEW YORK: IEEE , 2007, 225-228 p.Conference paper (Refereed)
We present a low-delay, constrained-entropy, backward adaptive, linear-predictive audio coder with low computational complexity. In contrast to most practical linear-predictive coders, the coder facilitates the exploitation of reverse waterfilling. The coder uses time-invariant quantization step size and constrained-entropy coding, thus eliminating the convergence problems of backward adaptation near signal transitions. Yet rate variations are kept small by the usage of a mixture model density for the signal. The mixture model has the backward adapted model and a second model as components and the component probability is transmitted. Experimental results confirm the advantages of the coder structure and show that the coder provides good overall performance.
Place, publisher, year, edition, pages
NEW YORK: IEEE , 2007. 225-228 p.
Acoustics, Chlorine compounds, Computational complexity, Entropy, Programming theory, Signal processing
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-36111DOI: 10.1109/ASPAA.2007.4393029ISI: 000258319500057ScopusID: 2-s2.0-50249130227ISBN: 978-1-4244-1618-9OAI: oai:DiVA.org:kth-36111DiVA: diva2:430580
IEEE Workshop on Applications of Signal Processing to Audio and Acoutics. New Paltz, NY. OCT 21-24, 2007