Electrical audio signal processing systems and devices – Binaural and stereophonic – Hearing aid
Reexamination Certificate
2005-11-08
2010-11-09
Mei, Xu (Department: 2614)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Hearing aid
C381S017000, C381S018000, C381S026000
Reexamination Certificate
active
07831052
ABSTRACT:
In a method and an acoustic system that generate a stereo signal for each of multiple. separate sources, a blind source separation of at least two microphone signals is conducted to acquire BSS filters. Each of the microphone signals is filtered with its own filter transfer function that is the quotient of a power density spectral portion of the respective sound source and the overall power density spectrum of the respective microphone signal, such that two stereo signals are obtained for each microphone signal. An approximation of the signals to be separated, for example for each of two hearing devices, is thereby possible.
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“Adaptive Signal Processing,” Benesty et al., pp. 195-225 (2003).
“Strategy-Selective Noise Reduction For Binaural Digital Hearing Aids” Wittkop, Speech Communication, vol. 39 (2003), pp. 111-138.
Kim Paul
Mei Xu
Schiff & Hardin LLP
Siemens Audiologische Technik GmbH
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