Power efficient hearing aid

Details Power efficient hearing aid Power efficient hearing aid

1993-10-08

1994-06-14

Isen, Forester W.

Electrical audio signal processing systems and devices

Sound effects

Reverberators

381 94, 330297, H04R 2500

Patent

active

053217586

ABSTRACT:
A power efficient hearing aid uses a programmable biasing technique to set the quiescent operating points of amplifiers used by the hearing aid to avoid excessive power usage by the hearing aid. The hearing aid also includes power supply circuitry which develops +1.25 volts and -1.25 volts relative to ground from a single +1.25 volt source. The hearing aid also conserves power by selectively disabling low frequency signal processing channels in the presence of relatively large amplitude ambient noise.

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patent: 5083312 (1992-01-01), Newton et al.

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