Electrical audio signal processing systems and devices – Hearing aids – electrical – Noise compensation circuit
Reexamination Certificate
2005-05-03
2005-05-03
Ni, Suhan (Department: 2643)
Electrical audio signal processing systems and devices
Hearing aids, electrical
Noise compensation circuit
C381S312000, C381S318000
Reexamination Certificate
active
06888949
ABSTRACT:
A noise reduction system for a sound reproduction system, in particular for hearing aids, comprises a primary and a secondary microphone for producing input signals in response to sound in which a noise component is present. The system has a first signal processing section comprising a fixed filter and a summing function, wherein the first signal processing section has means for receiving signals from the microphones and producing a speech reference signal and a noise reference signal. A second signal processing section comprises an adaptive filter and an additional summing function, and the second signal processing section has means for receiving the speech and noise reference signals and producing an output signal with an improved signal-to-noise ratio.
REFERENCES:
patent: 5917921 (1999-06-01), Sasaki et al.
patent: 6178248 (2001-01-01), Marash
“An adaptive noise canceller for hearing aids using two nearby microphones” Jeff Vanden Berghe, Jan Wouters, Journal of Acoustical Society of America, Jun. 1998.
Vanden Berghe Jeff
Wouters Jan
Bingham & McCutchen LLP
Bolan Michael J.
GN ReSound A/S
Ni Suhan
LandOfFree
Hearing aid with adaptive noise canceller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hearing aid with adaptive noise canceller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hearing aid with adaptive noise canceller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3378456