Abstract
It was found that, at a test bandwidth range of 50 Hz, 100% speech intelligibility is retained in naive subjects when, on average, 950 Hz is removed from each subsequent 1000-Hz bandwidth. Thus, speech is 95% redundant with respect to the spectral content. The parameters of the comb filter were chosen from measurements of speech intelligibility in experienced subjects, at which no one subject with normal hearing taking part in the experiment for the first time exhibited 100% intelligibility. Two methods of learning to perceive spectrally deprived speech signals are compared: (1) aurally only and (2) with visual enhancement. In the latter case, speech intelligibility is significantly higher. The possibility of using a spectrally deprived speech signal to develop and assess the efficiency of auditory rehabilitation of implanted patients is discussed.
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REFERENCES
Liklaider, D.K.R. and Miller, D.A., The Perception of Speech, in Eksperimental'naya psikhologiya (Experimental Psychology), Stevens, S.S., Ed., Moscow: Inostr. Literatura, 1963, p. 643.
Tokarev, O.P. and Tolstykh, S.I., Audiometry of Filtered Speech, Vesti Otorinolar., 1984, no. 6, p. 47.
Lantsov, A.A., Petrov, S.M., and Pudov, V.I., Characteristics of Auditory Perception in Light of the Problem of Rehabilitation of Patients with Implantation, Vesti Otorinolar., 1998, no. 4, p. 9.
Lantsov, A.A., Petrov, S.M., and Pudov, V.I., On Modeling the Auditory Perception in Implanted Patients, Vesti Otorinolar., 1999, no. 6, p. 21.
Petrov, S.M., A Method for the Processing of the Speech Signal, Russian Federation Patent 2121242, 1999.
Tavartkiladze, G.A. and Frolenkov, G.I., Physiological Aproaches to Adequacy of the Transmission of the Speech Information at Cochlear Implantation, Rasstroistva rechi. Klinicheskiye proyavleniya i metody korrektsii (Speech Disturbances. Clinical Stimuli and the Correction Methods), St. Petersburg Res. Inst. Ear, Throat, Nose, and Speech, 1994, p. 29.
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Petrov, S.M. Perception of a Spectrally Deprived Speech Signal. Human Physiology 29, 17–20 (2003). https://doi.org/10.1023/A:1022088132127
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DOI: https://doi.org/10.1023/A:1022088132127