Improved algorithms for phase prediction and frame interpolation in low bit rate sinusoidal coders

Sassan Ahmadi, Andreas Spanias

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A number of improved algorithms for phase prediction and frame interpolation in the context of sinusoidal speech coding are presented. A minimum variance sinusoidal phase estimation scheme is proposed, where it is shown that reasonably accurate estimates for short-time sinusoidal phases corresponding to voiced frames are obtained. On the other hand, improved algorithms for interpolation of sine wave parameters are presented which result in further reduction in bit rate while preserving the subjective quality of the reproduced speech at low bit rates. The performance of the above algorithms was evaluated on a large speech database and the results of statistical analysis are provided. The proposed algorithms were successfully integrated into a 2.4 kbps sinusoidal coder, where speech of good quality, intelligibility, and naturalness has been obtained.

Original languageEnglish (US)
Title of host publicationConference Record of the Asilomar Conference on Signals, Systems and Computers
EditorsM.B. Matthews
PublisherIEEE Comp Soc
Pages362-366
Number of pages5
Volume1
StatePublished - 1998
EventProceedings of the 1998 32nd Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2) - Pacific Grove, CA, USA
Duration: Nov 1 1998Nov 4 1998

Other

OtherProceedings of the 1998 32nd Asilomar Conference on Signals, Systems & Computers. Part 1 (of 2)
CityPacific Grove, CA, USA
Period11/1/9811/4/98

ASJC Scopus subject areas

  • Hardware and Architecture
  • Signal Processing
  • Electrical and Electronic Engineering

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