A pseudo-cepstrum based short-term postfilter

Hong Kook Kim, Hong Goo Kang

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


We propose an adaptive short-term postfilter for speech coders by incorporating the properties of the pseudo-cepstrum. Since the proposed postfilter implicitly has a characteristic of tilt compensation, it does not require an additional tilt compensation filter as conventional techniques. We derive a relationship between the parameters of the proposed postfilter based on a minimum phase distortion criterion, and show a simple tuning procedure for the parameters. It is also shown that the postfilter can be implemented with a lower order. By applying this postfilter to several international speech coding standards, we reduce the complexity of the speech coders while obtaining comparable performance to conventional approaches.

Original languageEnglish
Title of host publication2000 IEEE Workshop on Speech Coding - Proceedings
Subtitle of host publicationMeeting the Challenges of the New Millennium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)0780364163, 9780780364165
Publication statusPublished - 2000
EventIEEE Workshop on Speech Coding - Delavan, United States
Duration: 2000 Sept 172000 Sept 20

Publication series

Name2000 IEEE Workshop on Speech Coding - Proceedings: Meeting the Challenges of the New Millennium


OtherIEEE Workshop on Speech Coding
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2000 IEEE.

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Software


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