Intelligibility of speech with filtered time trajectories of spectral envelopes

Takayuki Arai, Misha Pavel, Hynek Hermansky, Carlos Avendano

Research output: Contribution to conferencePaper

62 Scopus citations

Abstract

The effect of filtering the time trajectories of spectral envelopes on speech intelligibility was investigated. Since LPC cepstrum forms the basis of many automatic speech recognition systems, we filtered time trajectories of LPC cepstrum of speech sounds, and the modified speech was reconstructed after the filtering. For processing, we applied low-pass, high-pass and band-pass filters. The results of the accuracy from the perceptual experiments for Japanese syllables show that speech intelligibility is not severely impaired as long as the filtered spectral components have 1) a rate of change faster than 1 Hz when high-pass filtered, 2) a rate of change slower than 24 Hz when low-pass filtered, and 3) a rate of change between 1 and 16 Hz when band-pass filtered.

Original languageEnglish (US)
Pages2490-2493
Number of pages4
StatePublished - Dec 1 1996
EventProceedings of the 1996 International Conference on Spoken Language Processing, ICSLP. Part 1 (of 4) - Philadelphia, PA, USA
Duration: Oct 3 1996Oct 6 1996

Other

OtherProceedings of the 1996 International Conference on Spoken Language Processing, ICSLP. Part 1 (of 4)
CityPhiladelphia, PA, USA
Period10/3/9610/6/96

ASJC Scopus subject areas

  • Computer Science(all)

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    Arai, T., Pavel, M., Hermansky, H., & Avendano, C. (1996). Intelligibility of speech with filtered time trajectories of spectral envelopes. 2490-2493. Paper presented at Proceedings of the 1996 International Conference on Spoken Language Processing, ICSLP. Part 1 (of 4), Philadelphia, PA, USA, .