Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1982-07-21
1985-04-02
Rubinson, Gene Z.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
179107R, 381101, 381104, 381106, 381109, H04K 2500
Patent
active
045089400
ABSTRACT:
An exemplary embodiment includes a plurality of parallel signal channels coupled with a signal input transducer, such as a microphone or induction coil. Each of the signal channels includes a respective bandpass filter for selection of a different frequency band, a controlled-gain amplifier, controlled by a volume control potentiometer, circuits for non-linear signal processing, and a bandpass filter for the reduction of distortion components caused by the non-linear processing circuits. A summing amplifier combines the signal components from all channels and is connected via an amplifier to an output signal transducer. Space requirements and power consumption are reduced in such a multi-channel processing arrangement by implementing all of the filters as sampled-data analog circuits. As a result hearing aids are provided which can be worn on the head, e.g. behind the ear.
REFERENCES:
patent: 3784750 (1974-01-01), Stearns et al.
patent: 3818149 (1974-06-01), Stearns et al.
patent: 3846719 (1974-11-01), Dolby
patent: 3848091 (1974-11-01), Stearns et al.
patent: 3894195 (1975-07-01), Kryter
patent: 3927279 (1975-12-01), Nakamura et al.
patent: 4025721 (1977-05-01), Graupe et al.
patent: 4052571 (1977-10-01), Gregory et al.
patent: 4061875 (1977-12-01), Freifeld et al.
patent: 4119812 (1978-10-01), Fox
patent: 4156116 (1979-05-01), Yanick
patent: 4185168 (1980-01-01), Graupe et al.
patent: 4187413 (1980-02-01), Moser
patent: 4188667 (1980-02-01), Graupe et al.
patent: 4266094 (1981-05-01), Abend
patent: 4290034 (1981-09-01), Fraser
IEEE Transactions on Audio and Electro Acoustics, vol. 1, Au-18, No. 2, Jun. 1970, Proakis, "Adaptive Digital Filters for Equalization of Telephone Channels, pp. 195-200.
IEEE Journal of Solid-State Circuits, vol. SC-12, No. 6, Dec. 1977, Caves et al., "Sampled Analog Filtering Using Switched Capacitors as Resistor Equivalents", pp. 592-599.
IEEE Journal of Solid-State Circuits, vol. SC-12, No. 6, Dec. 1977, Hosticka, "MOS Sampled Data Recursive Filters Using Switched Capacitor Integrators", pp. 600-608.
Radio Amal. Journal, vol. 34, No. 10, Oct. 1978, Schultz, "An Optimum Speech Filter", p. 22.
Electronics, Feb. 15, 1979, Jacobs et al., "Technical Article: Touch-Tone Decoder Chip Mates Analog Filters with Digital Logic", pp. 105-111.
IEEE Circuits and Systems Magazine, vol. 1, No. 4, Dec. 1979, Paul, "Adaptive Digital Techniques for Audio Noise Cancellations", pp. 2-7.
IEEE Journal of Solid State Circuits, vol. SC-14, No. 6, Dec. 1979, Gregorian et al., "CMOS Switched-Capacitor Filters for PCM Voice Codec", pp. 970-979.
The Bell System Technical Journal, vol. 61, No. 5, May-Jun. 1982, Laker et al., "Parasitic Insensitive Biphased Switched Capacitor Filters Realized with One Operational Amplifier Per Pole Pair", pp. 685-707.
Scand. Audio., vol. 8, 1979, pp. 121-126, Mangold et al., "Programmable Hearing Aid with Multichannel Compression".
Communication Systems, by A. B. Carlson, 1968, pp. 272-289.
Handbook of Sensory Physiology, Springer Verlag, N.Y., 1975, pp. 409-414.
Byrd Danita R.
Rubinson Gene Z.
Siemens Aktiengesellschaft
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