System for adaptive processing of telephone voice signals

Details System for adaptive processing of telephone voice signals System for adaptive processing of telephone voice signals

1991-09-30

1995-02-07

Knepper, David D.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

395 21, 395 28, 381 29, G10L 302

Patent

active

053881850

ABSTRACT:
A system for adaptively processing a telephonic speech signal performs modification in either the spectral domain or the time domain to bring the power in each frequency above the hearing threshold of the listener but below the upper limit of the listener's dynamic range.

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Holmes, Alice E., and Tom Frank. (1984) Telephone Listening Ability for hear-impaired individuals. Ear and Hearing, 5, 96-100.
Lippmann, R. P., Braida, L. D., and Durlach, N. I., (1981) "Study of Multichannel Amplitude Compression and Linear Amplification for Persons with Sensorineural Hearing Loss," J. Acoust. Soc. Am. 69(2), 524-533.
Lybarger, Samuel F. (1982) Telephone coupling. In "The Vanderbilt Hearing Aid Report: State of the Art Research Needs," G. A. Studebaker and F. H. Bess(eds), 91-93.
Villchur, E. (1973). "Signal Processing to Improve Speech Intelligibility in Perceptive Deafness," J. Acoust. Soc. A. 53, 1646-1657.
Holmes, Alice E., Acoustic vs. Magnetic Coupling for Telephone Listening of Hearing-Impaired Subjects, The Volta Review, May, 1985, pp. 215-223.
Holmes, Alice E., Chase, Nancy A.; Listening Ability with a Telephone Adapter, Hearing Instruments, vol. 36, No. 9 (1985), pp. 16-57.

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