Patents by Inventor Chris W. Papalias

Chris W. Papalias has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hearing aid having digital damping
    Patent number: 6466678
    Abstract: A hearing aid is set forth that includes one or more hearing aid components that introduce an undesired undamped peak into the frequency response of the hearing aid. An electronic damping filter is utilized to compensate for the undamped peak. The electronic damping filter has a notch filter response that includes an inverse peak across the frequency range of the undamped peak thereby electronically damping the frequency response so that the hearing aid output is generally unaffected by the undesired characteristics of the inverse peak. The electronic damping filter may be programmable to vary the magnitude and/or shift the frequency of the inverse peak. A method is set forth that exploits this programmability and allows the same circuit topology to be used in two different hearing aids respectively having two different undamped peaks. A further method allows handling two or more peaks.
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: October 15, 2002
    Assignee: Etymotic Research, Inc.
    Inventors: Mead C. Killion, Chris W. Papalias, Anthony J. Becker, Dan Mapes-Riordan
  • Damper for hearing aid
    Patent number: 6047075
    Abstract: A hearing aid is set forth that includes one or more hearing aid components that introduce an undesired undamped peak into the frequency response of the hearing aid. An electronic damping filter is utilized to compensate for the undamped peak. The electronic damping filter has a notch filter response that includes an inverse peak across the frequency range of the undamped peak thereby electronically damping the frequency response so that the hearing aid output is generally unaffected by the undesired characteristics of the inverse peak.The electronic damping filter may be programmable to vary the magnitude and/or shift the frequency of the inverse peak. A method is set forth that exploits this programmability and allows the same circuit topology to be used in two different hearing aids respectively having two different undamped peaks. A further method allows handling two or more peaks.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: April 4, 2000
    Assignee: Etymotic Research
    Inventors: Mead Killion, Chris W. Papalias, Anthony J. Becker
  • Electronic damper circuit for a hearing aid and a method of using the same
    Patent number: 5812679
    Abstract: A hearing aid is set forth that includes one or more hearing aid components that introduce an undesired undamped peak into the frequency response of the hearing aid. An electronic damping filter is utilized to compensate for the undamped peak. The electronic damping filter has a notch filter response that includes an inverse peak across the frequency range of the undamped peak thereby electronically damping the frequency response so that the hearing aid output is generally unaffected by the undesired characteristics of the inverse peak. The electronic damping filter may be programmed to vary the magnitude and/or shift the frequency of the inverse peak. A method is set forth that exploits this programmability and allows the same circuit topology to be used in two different hearing aids respectively having two different undamped peaks. A further method allows handling two or more peaks.
    Type: Grant
    Filed: November 30, 1994
    Date of Patent: September 22, 1998
    Inventors: Mead Killion, Chris W. Papalias, Anthony J. Becker