Electric Circuitry to Regulate a Bias Voltage for a Microphone
AssigneeTDK Corporation
InventorsTomasz Hanzlik, Gino Rocca, Marco De Blasi, Henning Petersen
Life of this patent
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Abstract
An electric circuit for regulating a bias voltage for a transducer of a microphone, the electric circuit including a bias voltage generator configured to generate the bias voltage for the transducer of the microphone and including a sound pressure detector configured to detect the sound pressure which impacts the transducer of the microphone. The bias voltage generator is configured to generate the bias voltage with a linear increasing gradient or linear decreasing gradient in response to the sound pressure detected by the sound pressure detector exceeding or falling below at least one threshold value of the sound pressure.
Claims15
An electric circuit for regulating a bias voltage for a transducer of a microphone, the electric circuit comprising:
- a bias voltage generator configured to generate the bias voltage for the transducer of the microphone;
- and
- a sound pressure detector configured to detect sound pressure which impacts the transducer of the microphone;
- wherein the bias voltage generator is configured to generate the bias voltage with a linear increasing gradient or linear decreasing gradient in response to the sound pressure detected by the sound pressure detector exceeding or falling below at least one threshold value of the sound pressure.
Dependencies are inferred from the claim text.