Abstract

The overall objective is to develop more effective sensory aids for hearing-impaired persons through the use of modern signal processing technology. Improved performance of cochlear implants will be investigated through the use of pre-processing to reduce the noise level and to select the portions of the signal to be presented to the impaired ear. Methods for classifying noise in relation to its effect on speech perception will be developed and used for automatic selection of noise reduction techniques and for hearing aid optimization. In addition, procedures for optimizing the electroacoustic behavior of a hearing aid in response to the level and type of background noise will be developed. After development, the signal- processing algorithms will be evaluated according to their effects on speech intelligibility and/or speech quality for typical listening conditions.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute on Deafness and Other Communication Disorders (NIDCD)
Type
Specialized Center (P50)
Project #
5P50DC000178-15
Application #
5209830
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
15
Fiscal Year
1996
Total Cost
Indirect Cost

  Publications

Kosky, Christine; Boothroyd, Arthur (2003) Validation of an on-line implementation of the Imitative test of Speech Pattern Contrast perception (IMSPAC). J Am Acad Audiol 14:72-83
Boothroyd, Arthur; Boothroyd-Turner, Dorothy (2002) Postimplantation audition and educational attainment in children with prelingually acquired profound deafness. Ann Otol Rhinol Laryngol Suppl 189:79-84
Plant, G; Gnosspelius, J; Levitt, H (2000) The use of tactile supplements in lipreading Swedish and English: a single-subject study. J Speech Lang Hear Res 43:172-83
Martin, B A; Boothroyd, A (2000) Cortical, auditory, evoked potentials in response to changes of spectrum and amplitude. J Acoust Soc Am 107:2155-61
Mackersie, C; Neuman, A C; Levitt, H (1999) A comparison of response time and word recognition measures using a word-monitoring and closed-set identification task. Ear Hear 20:140-8
Martin, B A; Boothroyd, A (1999) Cortical, auditory, event-related potentials in response to periodic and aperiodic stimuli with the same spectral envelope. Ear Hear 20:33-44
Smith, L Z; Levitt, H (1999) Consonant enhancement effects on speech recognition of hearing-impaired children. J Am Acad Audiol 10:411-21
Mackersie, C; Neuman, A C; Levitt, H (1999) Response time and word recognition using a Modified-Rhyme monitoring task: list equivalency and time-order effects. Ear Hear 20:515-20
Ostroff, J M; Martin, B A; Boothroyd, A (1998) Cortical evoked response to acoustic change within a syllable. Ear Hear 19:290-7
Kennedy, E; Levitt, H; Neuman, A C et al. (1998) Consonant-vowel intensity ratios for maximizing consonant recognition by hearing-impaired listeners. J Acoust Soc Am 103:1098-114

Showing the most recent 10 out of 17 publications