Electrical audio signal processing systems and devices – Sound effects – Reverberators
Patent
1987-01-22
1990-08-07
Isen, Forester W.
Electrical audio signal processing systems and devices
Sound effects
Reverberators
381 684, H04R 2500
Patent
active
049474324
ABSTRACT:
The invention relates to a programmable hearing aid with an amplifier and transmission section whose transmission characteristics can be controlled, with a control unit (1), with a transmitter for wireless transmission of control signals to the hearing aid (6) and a receiver (7) located therein for receiving and demodulating control signals, whereby the external control unit (1) contains an initial memory (20) for some of the parameters which determine the transmission characteristics of the hearing aid, a control panel with entry keypad (5) for recalling such parameters from the memory, a transmitter (4) which can be modulated with these parameters as control signals and a digital control unit (3) and whereby the hearing aid contains a further control unit (8) which can be activated by the control signals after they have been demodulated, for control of the transmission section.
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"Programmable Hearing Aid with Multichannel Compression", S. Mangold et al, Scand Audiol 8:121-126, 1979.
"Study of Multichannel Amplitude . . . Hearing Loss", pp. 524-534; R. P. Lippman et al, J. Acoust. Soc. Am. 69(2), Feb. 1981.
Isen Forester W.
Topholm & Westermann ApS
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