Patent ID: 8971544
Filing Date: 2015-03-03
Classification: H04R

Abstract:
1. A method for adjusting a performance of an electroacoustic transducer, comprising: (a) receiving, by a gain adjustment circuit, a displacement signal associated with a change in capacitance within the electroacoustic transducer as created by a relative motion between a magnetic structure of the electroacoustic transducer and a voice coil of the electroacoustic transducer; (b) receiving, by the gain adjustment circuit, a driving signal associated with the electroacoustic transducer, the driving signal configured to generate relative motion between the magnetic structure of the electroacoustic transducer and the voice coil of the electroacoustic transducer; (c) detecting, by the gain adjustment circuit, a displacement signal value of the displacement signal as meeting or exceeding a displacement signal threshold; (d) detecting, by the gain adjustment circuit, an absolute value of a driving signal value of the driving signal as meeting or exceeding a driving signal threshold; (e) modifying, by an output current of a current limited source circuit of the gain adjustment circuit, a loop gain of an active noise reduction loop associated with the electroacoustic transducer; (f) wherein modifying, by the output current of the current limited source circuit of the gain adjustment circuit, the loop gain of the active noise reduction loop associated with the electroacoustic transducer, comprises: