CONF motlicek:tsd:2006/IDIAP Speech Coding based on Spectral Dynamics Motlicek, Petr Hermansky, Hynek Garudadri, Harinath Srinivasamurthy, Naveen EXTERNAL http://publications.idiap.ch/attachments/papers/2006/motlicek-tsd-2006.pdf PUBLIC http://publications.idiap.ch/index.php/publications/showcite/motlicek:rr06-05 Related documents Ninth International Conference on TEXT, SPEECH and DIALOGUE (TSD) 2006 IDIAP-RR 06-05 In this paper we present first experimental results with a novel audio coding technique based on approximating Hilbert envelopes of relatively long segments of audio signal in critical-band-sized sub-bands by autoregressive model. We exploit the generalized autocorrelation linear predictive technique that allows for a better control of fitting the peaks and troughs of the envelope in the sub-band. Despite introducing longer algorithmic delay, improved coding efficiency is achieved. Since the described technique does not directly model short-term spectral envelopes of the signal, it is suitable not only for coding speech but also for coding of other audio signals. REPORT motlicek:rr06-05/IDIAP Speech Coding based on Spectral Dynamics Motlicek, Petr Hermansky, Hynek Garudadri, Harinath Srinivasamurthy, Naveen EXTERNAL http://publications.idiap.ch/attachments/reports/2006/motlicek-idiap-rr-06-05.pdf PUBLIC Idiap-RR-05-2006 2006 IDIAP Submitted for publication In this paper we present first experimental results with a novel audio coding technique based on approximating Hilbert envelopes of relatively long segments of audio signal in critical-band-sized sub-bands by autoregressive model. We exploit the generalized autocorrelation linear predictive technique that allows for a better control of fitting the peaks and troughs of the envelope in the sub-band. Despite introducing longer algorithmic delay, improved coding efficiency is achieved. Since the described technique does not directly model short-term spectral envelopes of the signal, it is suitable not only for coding speech but also for coding of other audio signals.