Digitally programmable gain amplifier
First Claim
Patent Images
1. A hearing aid for converting input acoustical energy into amplified output acoustical energy, the hearing aid comprising;
- a microphone;
a receiver;
a amplifier electrically coupled between the microphone and the receiver; and
means for adjusting the gain of the amplifier between a first pre-programmed gain and a second preprogrammed gain.
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Abstract
A hearing aid for converting input acoustical energy into an electrical signal, processing the signal and converting the processed electrical signal into acoustical energy is disclosed. The hearing aid includes a digitally programmable gain amplifier. The digitally programmable gain amplifier comprises circuitry for decoding a digital control input signal (referred to as the serial data input), and based upon the digital control signal it comprises a means for changing the amplifier gain.
45 Citations
13 Claims
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1. A hearing aid for converting input acoustical energy into amplified output acoustical energy, the hearing aid comprising;
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a microphone;
a receiver;
a amplifier electrically coupled between the microphone and the receiver; and
means for adjusting the gain of the amplifier between a first pre-programmed gain and a second preprogrammed gain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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- 9. For a hearing aid including a microphone and a receiver, the hearing aid for converting input acoustical energy into amplified output acoustical energy, an amplifier electrically coupled between the microphone and the receiver, the amplifier including means for adjusting the gain of the amplifier between a first pre-programmed gain and a second pre-programmed gain.
Specification