# US 2013/0156239 A1 · Hearing aid with improved magnetic reception during wireless communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0156239 A1 - Document ID: US20130156239A1 - Status: Published application - Kind: A1 - Application number: 13/330,524 - Filed: 2011-12-19 - Published: 2013-06-20 - Earliest claimed: 2011-12-16 - Assignees: GN ReSound A/S - Inventors: Brian Dam Pedersen; Gerard Nijsse - Web page: https://patentgrep.com/patent/US20130156239A1 ## CPC - H04R 25/554: {using a wireless connection, e.g. between microphone and amplifier or using Tcoils} - H04R 25/43: {Electronic input selection or mixing based on input signal analysis, e.g. mixing or selection between microphone and telecoil or between microphones with different directivity characteristics (H04R25/407 takes precedence)} - H04R 25/552: {Binaural} - H04R 2225/49: Reducing the effects of electromagnetic noise on the functioning of hearing aids, by, e.g. shielding, signal processing adaptation, selective (de)activation of electronic parts in hearing aid - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract A hearing aid includes a magnetically sensitive transducer for conversion of a varying magnetic field into an audio signal, a processor configured to generate a hearing loss compensated output signal based on the audio signal, an output transducer for providing an auditory output signal based on the hearing loss compensated output signal, an RF transceiver for wireless communication, and a communication controller that is configured to turn the RF transceiver on and off, wherein the processor is further configured to generate the hearing loss compensated output signal based on an estimate of the audio signal within a time period comprising an event that the RF transceiver changes state between on and off, and wherein the estimate is based at least on a part of the audio signal input to the processor outside the time period. ## Claims ### Claim 1 A hearing aid comprising: a magnetically sensitive transducer for conversion of a varying magnetic field into an audio signal; a processor configured to generate a hearing loss compensated output signal based on the audio signal; an output transducer for providing an auditory output signal based on the hearing loss compensated output signal; an RF transceiver for wireless communication; and a communication controller that is configured to turn the RF transceiver on and off; wherein the processor is further configured to generate the hearing loss compensated output signal based on an estimate of the audio signal within a time period comprising an event that the RF transceiver changes state between on and off; and wherein the estimate is based at least on a part of the audio signal input to the processor outside the time period. ### Claim 2 (depends on 1) The hearing aid according to claim 1, wherein the estimate is based on extrapolation of the part of the audio signal input to the processor outside the time period. ### Claim 3 (depends on 2) The hearing aid according to claim 2, wherein the part of the audio signal is input to the processor before the time period. ### Claim 4 (depends on 2) The hearing aid according to claim 2, wherein the part of the audio signal is input to the processor after the time period. ### Claim 5 (depends on 1) The hearing aid according to claim 1, wherein the part of the audio signal on which the estimate is based has a duration that is at least twice as long as the time period. ### Claim 6 (depends on 1) The hearing aid according to claim 1, wherein the estimate is formed using Linear Predictive Coding. ### Claim 7 (depends on 1) The hearing aid according to claim 1, wherein the estimate is formed using Warped Linear Predictive Coding. ### Claim 8 (depends on 1) The hearing aid according to claim 1, wherein the estimate is formed using windowing. ### Claim 9 (depends on 8) The hearing aid according to claim 8, wherein the windowing comprises a Hanning window. ### Claim 10 (depends on 1) The hearing aid according to claim 1, wherein the processor is also configured to generate the hearing loss compensated output signal based on an estimate of the audio signal before the time period, the estimate of the audio signal before the time period being based on a part of the audio signal that is input to the processor after the time period. ### Claim 11 (depends on 1) The hearing aid according to claim 1, wherein the processor is also configured to generate the hearing loss compensated output signal based on an estimate of the audio signal after the time period, the estimate of the audio signal after the time period being based on a part of the audio signal that is input to the processor before the time period. ### Claim 12 (depends on 1) The hearing aid according to claim 1, wherein the processor is further configured to process the audio signal in a plurality of frequency channels, and wherein the estimate of the audio signal is provided in at least one of the plurality of frequency channels. ### Claim 13 A method of removing interference from a hearing aid audio signal, comprising: converting a varying magnetic field into an audio signal; generating a hearing loss compensated output signal based on the audio signal; providing an auditory output signal based on the hearing loss compensated output signal; controlling turn-on and turn-off of an RF transceiver of the hearing aid; forming an estimate of the audio signal that is within a time period comprising an event that the RF transceiver changes state between on and off, wherein the estimate is formed based at least on the audio signal obtained outside the time period; and generating the hearing loss compensated output signal based on the estimate of the audio signal that is within the time period. ### Claim 14 (depends on 13) The method according to claim 13, wherein the estimate is formed utilizing Linear Prediction Coding. ### Claim 15 (depends on 13) The method according to claim 13, wherein the hearing loss compensated output signal is also based on an estimate of the audio signal before the time period, the estimate of the audio signal before the time period being based on a part of the audio signal input to the processor after the time period. ### Claim 16 (depends on 13) The method according to claim 13, wherein the hearing loss compensated output signal is also based on an estimate of the audio signal after the time period, the estimate of the audio signal after the time period being based on a part of the audio signal input to the processor before the time period.