Hearing aids

Details Hearing aids Hearing aids

1982-10-20

1985-05-14

Rubinson, Gene Z.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 68, H04R 2702

Patent

active

045174156

ABSTRACT:
A hearing aid comprising a microphone whose output signal is split by high and low pass filters and supplied to two channels. Each channel includes a variable gain circuit the outputs of which are mixed and supplied to an earphone. The turnover frequencies of the filters are such that one channel limits the dynamic range of vowels whereas the other channel limits the dynamic range of consonents, thus preventing interaction and masking of consonants by preceding vowels. The intelligibility of speech is thus improved.

REFERENCES:
patent: 3818149 (1974-06-01), Stearns
patent: 3894195 (1975-07-01), Kryter
E. Villchur, "Signal Processing . . . ", Journal of the Acoustical Society of America, vol. 53, No. 6, pp. 1646-1657.
IEEE Transactions on Acoustics, Speech and Signal Processing, vol. ASP24, No. 6, Dec. 1976, pp. 507-511, New York; P. Yanick et al., "Signal Processing to Improve Intelligibility in the Presence of Noise for Persons with a Ski-Slope Hearing Impairment.

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