Jointly optimal quantization of parameters in sinusoidal audio coding
2005 (English)In: 2005 WORKSHOP ON APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, 2005, 247-250 p.Conference paper (Refereed)
[it this paper, we present new methods for jointly optimal scalar quantization of parameters in sinusoidal audio coding. The sinusoidal amplitudes, frequencies, and phases used to represent (the tonal component of) an audio signal are quantized Such as to minimize a single-letter perceptual distortion measure under a given bit-rate constraint. The asymptotically optimal scalar quantizers are derived analytically using high-rate theory. We present different practical methods, where quantization accuracy of sonic parameters is made dependent on quantized values of other parameters'. The choice of method depends on the availability of the frequency-masking threshold, defining the perceptual importance of the individual sinusoids, at the decoder. The high performance of our quantizers is demonstrated by means of a listening test.
Place, publisher, year, edition, pages
2005. 247-250 p.
, IEEE International Integrated Reliability Workshop Final Report, ISSN 1930-8841
Computer and Information Science
IdentifiersURN: urn:nbn:se:kth:diva-36138DOI: 10.1109/ASPAA.2005.1540216ISI: 000236204100063ScopusID: 2-s2.0-33749062201OAI: oai:DiVA.org:kth-36138DiVA: diva2:430490
Workshop on Applications of Sigbak Processing to Audio and Acoustics New Paltz, NY, OCT 16-19, 2005
QC 201107112011-07-112011-07-082011-10-14Bibliographically approved