Coding of Parametric Models with Randomized Quantization in a Distributed Speech and Audio Codec

T. Baeckstroem, J. Fischer

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


For efficient distributed coding of speech and audio signals, we need to encode the signal such that each device transmits unique information, to avoid redundancy. In a recent contribution, we have demonstrated that this is possible by application of a randomization operation before quantization of the signal spectrum. The proposed coding however relies on an assumption that the input data follows the normal distribution with zero-mean, whereby it does not directly apply on the coding of the parameters of parametric models of the signal. Importantly, the proposed coding does not preserve signal gain, which thus has to be parametrized and separately transmitted. To avoid overcoding also in transmission of the signal gain and the coefficients of other parametric models, in this paper, we propose a method for mapping parameters to the same probability distribution as spectral coefficients, as well as methods for perceptual weighting of these parameters.
Original languageEnglish
Title of host publicationSpeech Communication; 12. ITG Symposium
PublisherVDE Verlag
Number of pages5
ISBN (Print)978-3-8007-4275-2
Publication statusPublished - 2016
MoE publication typeA4 Article in a conference publication
EventITG Symposium on Speech Communication - Paderborn, Germany
Duration: 5 Oct 20167 Oct 2016
Conference number: 12


ConferenceITG Symposium on Speech Communication

Fingerprint Dive into the research topics of 'Coding of Parametric Models with Randomized Quantization in a Distributed Speech and Audio Codec'. Together they form a unique fingerprint.

Cite this