The long-range purpose is to provide an understanding of the use of the basic acoustic patterns in speech perception by hearing-impaired persons. Particularly, information is sought that would form a basis for designing eventual speech-processing systems and adjusting these systems for the individual. The use of major acoustic cues to consonant perception by the hearing-impaired, and speech-cue enhancement are studied using consonant stimuli from naturally spoken syllables, chosen on the basis of frequency of occurrence in conversations. The consonants studied will be fricatives and stops in intervocalic, initial, and final positions. and /n,1/ in intervocalic position. The cues studied are those that distinguish stop/fricative, voiced/voiceless, place of articulation, nasal, and lateral. Enhancements, studied for fricatives and stops, are friction/burst amplification, murmur amplification, and spectral exaggeration. Discrimination training paradigms for individual listeners' use of cue-enhancements are also studied.
| Kozma-Spytek, L; Kates, J M; Revoile, S G (1996) Quality ratings for frequency-shaped peak-clipped speech: results for listeners with hearing loss. J Speech Hear Res 39:1115-23 |
| Revoile, S; Kozma-Spytek, L; Holden-Pitt, L et al. (1995) Acoustic-phonetic context considerations for speech recognition testing of hearing-impaired listeners. Ear Hear 16:254-62 |
| Revoile, S G; Kozma-Spytek, L; Holden-Pitt, L et al. (1991) VCVs vs CVCs for stop/fricative distinctions by hearing-impaired and normal-hearing listeners. J Acoust Soc Am 89:457-60 |
| Revoile, S G; Pickett, J M; Kozma-Spytek, L (1991) Spectral cues to perception of /d, n, l/ by normal- and impaired-hearing listeners. J Acoust Soc Am 90:787-98 |
