Patent ID: 9113245
Filing Date: 2015-08-18
Classification: G10K,H04R

Abstract:
1. A headset or earphone, comprising an electro-acoustic reproduction transducer having an oscillator coil arranged in an axis; an amplifier coupled to the electro-acoustic reproduction transducer; a magnetic interference sensor configured to measure a magnetic interference field that (1) is experienced by the electro-acoustic reproduction transducer and that (2) generates an acoustic noise signal by inducing an electrical current into the oscillator coil; a correction unit, coupled to the magnetic interference sensor, configured to analyze an output of the magnetic interference sensor and to produce a compensation signal; and an adding unit configured to add the compensation signal to an input signal and for outputting the result to the amplifier to cancel the acoustic noise signal generated in the oscillator coil of the transducer by the magnetic interference field.