MICROPHONE SYSTEM HAVING MICROPHONE TRANSDUCER IN FEEDBACK LOOP WITH ADJUSTABLE FREQUENCY -3dB POINT AND IMPROVED SETTLING SPEED

A microphone biasing circuit comprises a first amplifier having an output connected to a first node and an input connected to a second node; and a first feedback path connected from the first node to the second node. The first feedback path comprises a microphone having a first terminal connected to...

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Bibliographic Details
Main Authors Ezekwe, Chinwuba, Ganta, Saikrishna
Format Patent
LanguageEnglish
Published 16.08.2018
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
PUBLIC ADDRESS SYSTEMS
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Summary:A microphone biasing circuit comprises a first amplifier having an output connected to a first node and an input connected to a second node; and a first feedback path connected from the first node to the second node. The first feedback path comprises a microphone having a first terminal connected to the first node and a second terminal connected to a third node, the microphone being configured to provide a sensed voltage at the first node in response to sound, the third node having a first DC bias voltage; and a first capacitor connected between the third node and the second node.
Bibliography:Application Number: US201715471502