Hearing system beamformer

Details Hearing system beamformer Hearing system beamformer

2007-04-17

2007-04-17

Lee, Ping (Department: 2615)

Electrical audio signal processing systems and devices

With mixer

C381S094100

Reexamination Certificate

active

09617108

ABSTRACT:
The present invention, generally speaking, picks up a voice or other sound signal of interest and creates a higher voice-to-background-noise ratio in the output signal so that a user enjoys higher intelligibility of the voice signal. In particular, beamforming techniques are used to provide optimized signals to the user for further increasing the understanding of speech in noisy environments and for reducing user listening fatigue. In one embodiment, signal-to-noise performance is optimized even if some of the binaural cues are sacrificed. In this embodiment, an optimum mix ratio or weighting ratio is determined in accordance with the ratio of noise power in the binaural signals. Enhancement circuitry is easily implemented in either analog or digital form and is compatible with existing sound processing methods, e.g., noise reduction algorithms and compression/expansion processing. The sound enhancement approach is compatible with, and additive to, any microphone directionality or noise canceling technology.

REFERENCES:
patent: 3992584 (1976-11-01), Dugan
patent: 4956867 (1990-09-01), Zurek et al.
patent: 5228093 (1993-07-01), Agnello
patent: 5414776 (1995-05-01), Sims, Jr.
patent: 5764778 (1998-06-01), Zurek
patent: 6240192 (2001-05-01), Brennan et al.
patent: 6697494 (2004-02-01), Klootsema et al.
McKinney, E.D. et al., “A Two-microphone Adaptive Broadband Array for Hearing Aids”, School of Electrical Engineering, The University of Oklahoma, pp. 933-936.
Greenberg, Julie E. et al, “Evaluation of an adaptive beamforming method for hearing aids”, J. Acoust. Soc. Am. 91 (3), Mar. 1992, pp. 1662-1676.
Stadler, R.W. et al., “On the potential of fixed arrays for hearing aids”, J. Acoust. Soc. Am. 94 (3), Pt. Sep. 1, 1993, pp. 1332-1342.
Zurek, Patrick M. et al., “Prospect and Limitations of Microphone-Array Hearing Aids”, Research Laboratory of Electronics Massachuetts Institute of Technology, Bad Zwischenahn Aug. 31-Sep. 5, 1995, pp. 233-244.
Desloge, Joseph G. et al., “Microphone-Array Hearing Aids with Binaural Output—Part I: Fixed-Processing Systems”, IEEE Transactions on Speech and Audio Processing, vol. 5, No. 6, Nov. 1997, pp. 529-542.
Welker, Daniel P. et al., “Microphone-Array Hearing Aids with Binaural Output—Part II: A Two-Microphone Adaptive System”, IEEE Transactions on Speech and Audio Processing, vol. 5, No. 6, Nov. 1997, pp. 543-551.
Greenberg, Julie E. “Modified LMS Algorithms for Speech Processing with an Adaptive Noise Canceller”, IEEE Transactions on Speech and Audio Processing, vol. 6, No. 4, Jul. 1998, pp. 338-351.

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