MVDR based all-pole modeling: Properties, enhancements, and comparisons

Manohar Murthi, Bhaskar D. Rao

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

5 Scopus citations


In this paper, we present several features of minimum variance distortionless response (MVDR) based all-pole filters which are suitable for modeling all types of speech. In particular, we demonstrate how the MVDR all-pole spectrum, based upon time-domain correlations, can provide high quality spectral envelope modeling of voiced speech. Simulation results are included showing that the MVDR all-pole spectrum's modeling of voiced speech harmonics improves as the model order increases, leading to a monotonically decreasing spectral distortion. Furthermore, we show how the MVDR all-pole envelope can be enhanced by using forward-backward linear prediction. In addition, low order (10-14) MVDR based all-pole filters are examined and compared with other all-pole spectral envelopes. The reduced order MVDR all-pole spectrum is shown to compare favorably with linear prediction (LP) and LP cubic spline spectral envelopes in terms of spectral modeling and complexity.

Original languageEnglish (US)
Title of host publication1999 IEEE Workshop on Speech Coding
Subtitle of host publicationModel, Coders, and Error Criteria, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)0780356519, 9780780356511
StatePublished - Jan 1 1999
Externally publishedYes
Event6th IEEE Workshop on Speech Coding - Porvoo, Finland
Duration: Jun 20 1999Jun 23 1999


Other6th IEEE Workshop on Speech Coding

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing


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