ISCA Archive Interspeech 2008
ISCA Archive Interspeech 2008

Frequency compression/transposition of fricative consonants for the hearing impaired with high-frequency dead regions

Francisco J. Fraga, Leticia P. Costa S. Prates, Maria Cecilia M. Iorio, Maria Cecilia M. Iorio

In this paper we present the first evaluation results of a carefully designed piecewise linear frequency compression curve, to improve the recognition of fricative consonants, for patients with high-frequency dead regions in the cochlea. Our original frequency compression/transposition algorithm takes into account the average short-time spectrum of the most frequent Brazilian Portuguese fricatives. A specific speech material, composed by twenty four different monosyllables spoken by eight speakers (four male and four female), was recorded for a consonant discrimination test. The algorithm was tested over ten normal hearing listeners with simulated dead regions above 1500 and 2000 Hz. One-way and two-way ANOVA results have shown a statistical significant improvement in the correct identification of fricatives in initial syllabic position.


doi: 10.21437/Interspeech.2008-584

Cite as: Fraga, F.J., Prates, L.P.C.S., Iorio, M.C.M., Iorio, M.C.M. (2008) Frequency compression/transposition of fricative consonants for the hearing impaired with high-frequency dead regions. Proc. Interspeech 2008, 2238-2241, doi: 10.21437/Interspeech.2008-584

@inproceedings{fraga08_interspeech,
  author={Francisco J. Fraga and Leticia P. Costa S. Prates and Maria Cecilia M. Iorio and Maria Cecilia M. Iorio},
  title={{Frequency compression/transposition of fricative consonants for the hearing impaired with high-frequency dead regions}},
  year=2008,
  booktitle={Proc. Interspeech 2008},
  pages={2238--2241},
  doi={10.21437/Interspeech.2008-584}
}