Integrated automatic telephone switch
First Claim
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1. A method comprising:
- detecting a presence of a magnetic field, the magnetic field produced by a communication device that produces an acoustic signal, using a magnetic sensing device disposed in a hearing aid;
digitally modifying, in response to the detection of the presence of the magnetic field, a frequency response of the hearing aid to limit the frequency response in a frequency range to reduce acoustic feedback oscillation of the hearing aid caused by proximity of the communication device; and
automatically modifying, in response to the magnetic sensing device determining removal of the magnetic field, the frequency response of the hearing aid different from the frequency response as modified in the presence of the magnetic field.
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Abstract
Methods and apparatus for a hearing aid include a mechanism to detect the presence of a magnetic field using a magnetic sensing device disposed in a hearing aid, to digitally modify a frequency response of the hearing aid in response to the detection of the presence, and to modify the frequency response of the hearing aid in response to the magnetic sensing device determining removal of the magnetic field.
94 Citations
29 Claims
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1. A method comprising:
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detecting a presence of a magnetic field, the magnetic field produced by a communication device that produces an acoustic signal, using a magnetic sensing device disposed in a hearing aid; digitally modifying, in response to the detection of the presence of the magnetic field, a frequency response of the hearing aid to limit the frequency response in a frequency range to reduce acoustic feedback oscillation of the hearing aid caused by proximity of the communication device; and automatically modifying, in response to the magnetic sensing device determining removal of the magnetic field, the frequency response of the hearing aid different from the frequency response as modified in the presence of the magnetic field. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hearing aid comprising:
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a microphone to provide an electrical signal representative of a received acoustic signal having a low frequency component and a high frequency component; means for digitally filtering the electrical signal to reduce acoustic feedback oscillation of the hearing aid caused by proximity of the communication device; and means for automatic switching responsive to a change in detection of magnetic fields, wherein the means for automatic switching is configured to automatically switch to enable or disenable the means for digitally filtering the electrical signal such that the means for automatic switching is configured to automatically switch, upon determining a presence of a magnetic field produced by a communication device that produces the acoustic signal, to automatically enable the means for digitally filtering the electrical signal to modify the high frequency component of the electrical signal, and the means for automatic switching is configured to automatically switch, upon determining the removal of the magnetic field, to automatically disenable the means for digitally filtering the electrical signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A hearing aid comprising:
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a microphone to provide an electrical signal representative of a received acoustic signal having a low frequency component and a high frequency component; a signal processor configured to digitally control transmitting an output signal representative of the acoustic signal to reduce acoustic feedback oscillation of the hearing aid caused by proximity of the communication device; and a switch responsive to a change in detection of magnetic fields, wherein the switch is configured to switch automatically, upon detecting a presence of a magnetic field produced by a communication device that produces the acoustic signal, to enable the signal processor to digitally modify a frequency response of the hearing aid to reduce a high frequency gain, and, upon determining the removal of the detected magnetic field, the switch is configured to switch automatically to enable the signal processor to digitally modify the frequency response of the hearing aid different from the frequency response as modified in the presence of the magnetic field. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification