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    SWITCHING STRUCTURES FOR HEARING AID
    93.
    发明专利
    SWITCHING STRUCTURES FOR HEARING AID 未知

    公开(公告)号：CA2439329A1

    公开(公告)日：2004-03-16

    申请号：CA2439329

    申请日：2003-09-02

    Applicant: STARKEY LAB INC

    Inventor： SACHA MIKE K ,  BREN MARK A ,  PETERSON TIMOTHY S ,  ROBERTS RANDALL W

    IPC: H04R25/00 ,  H04R3/00

    Abstract: A hearing aid is provided with a switch that automatically, non-manuall y switches at least one of inputs, filters, or programmable parameters in the presence of a magnetic field. The magnetic field can be generated by a magnet in a telepho ne handset. The hearing aid further is programmed based on time-varying characteristics of the magnetic field. Wireless activation or deactivation of the hearing aid is also described. A magnetic field dependant switch turns the hearing aid on or off.

    System for measuring signal to noise ratio in a speech signal
    95.
    发明专利
    System for measuring signal to noise ratio in a speech signal 未知

    公开(公告)号：AU1522000A

    公开(公告)日：2000-05-29

    申请号：AU1522000

    申请日：1999-11-10

    Applicant: STARKEY LAB INC

    Inventor： WOODS WILLIAM S

    IPC: G01R29/26 ,  G10L11/02 ,  H04R25/00

    Abstract: A system for measuring speech content in sound. The system determining time local speech-to-noise ratio for one or more bands. The system using a signal related to the power of the input signal or envelope and generating a time-dependent mean of the envelope and deviation of the envelope from the mean to estimate a time-dependent speech-to-noise ratio. The system providing single band or multiband speech-to-noise estimates for signal processing applications. The system realizable in analog, digital or analog and digital combinations.

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