Mangold et al., "Wearable Programmable Hearing Aid with Multi-Channel Compression: Successive Adaptation An Interdisciplinary Study Based on Subjective and Objective Evaluation Methods", Chalmers Tekniske Hogskola, Swedish Technical University, Gotherberg, Nov. 1980 (with partial translation). |
Mangold, "Programmable Hearing Aid" Uses of Computers in Aiding the Disabled, IFIP-IMIA Working Conference, Haifa, Israel, Nov. 3-5, 1981, pp. 135-146. |
S. Mangold et al., "Programmable Hearing Aid with Multichannel Compression," Scan Audiol 8: 121-126, 1979. |
Widex A8+T and A8+H Hearing Aids Brochure (1977). |
Widex Model S20 Hearing Aid Brochure (1980). |
Audiology, Gunnar Liden, Sweden (1975), pp. 238-239 and 246-247 (translation attached). |
R. P. Lippmann et al., "Study of Multichannel Amplitude Compression and Linear Amplification for Persons with Sensorineural Hearing Loss," Journal of the Acoustic Society of America, vol. 69, No. 2, Feb. 1981, pp. 524-534. |
S. G. Knorr, "A Hearing Aid for Subjects with Extreme High-Frequency Losses," IEEE Transactions on Acoustics, Speech and Signal Processing, Dec., 1976, pp. 473-480. |
Rihs et al., "Active Filtering--a Step Toward the Programmable Hearing Aid," Hearing Instruments, vol. 33, No. 10, 1982. |
Mangold et al., "Multichannel Compression in a Portable Programmable Hearing Aid," Hearing Aid Journal, Apr. 1981, pp. 6, 29-30, 32. |
Moser, "Horgerat mit diskreter Signalverarbetung" (Hearing Aid with Discrete Signal Processing) Zeitschrift fur Hogerate-Akustik, Band 17, 1978, Heft 4 (Jul.), pp. 124-135. |
Katz et al., "A Portable Tactile Aid for the Deaf using a Z80 Microprocessor Controller," Proceedings of New England Boerg Conference, pp. 336-339 (Mar. 22, 1979). |