Electrical audio signal processing systems and devices – Directive circuits for microphones
Reexamination Certificate
2006-12-26
2006-12-26
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Directive circuits for microphones
C381S313000
Reexamination Certificate
active
07155019
ABSTRACT:
Improved approaches to matching sensitivities of microphones in multi-microphone directional processing systems. These approaches operate to adaptively match microphone sensitivities so that directional noise suppression is robust. As a result, microphone sensitivities remain matched not only over time but also while in actual use. These approaches are particularly useful for hearing aid applications in which directional noise suppression is important.
REFERENCES:
patent: 3836732 (1974-09-01), Johanson et al.
patent: 3975599 (1976-08-01), Johanson
patent: 4131760 (1978-12-01), Christensen et al.
patent: 4245313 (1981-01-01), Coates
patent: 4701953 (1987-10-01), White
patent: 4712244 (1987-12-01), Zwicker et al.
patent: 4751738 (1988-06-01), Widrow et al.
patent: 4956867 (1990-09-01), Zurek et al.
patent: 5214709 (1993-05-01), Ribic
patent: 5325436 (1994-06-01), Soli et al.
patent: 5390254 (1995-02-01), Adelman
patent: 5434924 (1995-07-01), Jampolsky
patent: 5471538 (1995-11-01), Sasaki et al.
patent: 5479522 (1995-12-01), Lindemann et al.
patent: 5524056 (1996-06-01), Killion et al.
patent: 5625684 (1997-04-01), Matouk et al.
patent: 5737430 (1998-04-01), Widrow
patent: 5740256 (1998-04-01), Castello Da Costa et al.
patent: 5757933 (1998-05-01), Preves et al.
patent: 6268725 (2001-07-01), Vernon et al.
patent: 6285768 (2001-09-01), Ikeda
patent: 6654468 (2003-11-01), Thompson
patent: 569216 (1993-11-01), None
patent: 06 269085 (1994-09-01), None
patent: 0856833 (1998-08-01), None
patent: 982971 (1999-08-01), None
patent: 63-002500 (1988-01-01), None
patent: 11-220796 (1999-08-01), None
patent: WO 99/03091 (1999-01-01), None
Glover, “A review of Cardioid Type Unidirectional Microphones”, (Jan. 1940) J.A.S.A., vol. 11, pp. 296-302.
Killion et al., “The case of the missing dots: AI and SNR loss”, (May 1998) The Hearing Journal, vol. 51, No. 5, pp. 1-6.
Gravel et al., “Children's Speech Recognition in Noise Using Omni-Directional and Dual-Microphone Hearing Aid Technology”, Ear & Hearing, Feb. 1999, pp. 1-11.
Ricketts et al., “Comparison of Performance across Three Directional Hearing Aids”, J Am Acad Audiol vol. 10, 1999, pp. 180-189.
Buerkli-Halevy, “The directional microphone advantage”, Hearing Instruments, vol. 38, No. 8, 1987.
Preves, “Directional Microphone Use in ITE Hearing Instruments”, The Hearing Rev., Jul. 1997, pp. 21-27.
Greenberg et al., “Evaluation of an adaptive beamforming method for hearing aids”, J. Acoust. Soc. Am. 91 (3), Mar. 1992, pp. 1662-1676.
Agnew, “How multi-microphone arrays can improve directionality”, The Hearing Journal, vol. 50, No. 8, Aug. 1997, pp. 34-46.
Roberts et al., “Measurement and Intelligibility Optimization of Directional Microphones for Use in Hearing Aid Devices”, 103rdConvention of Audio Engineering Society (AES), Sep. 1997, 13 pp.
Desloge et al., “Microphone-Array Hearing Aids with Binaural Output—Part I: Fixed-Processing Systems”, IEEE Trans. on Speech & Audio Proc., vol. 5, No. 6, Nov. 1997, pp. 529-542.
Welker et al., “Microphone-Array Hearing Aids with Binaural Output—Part II: A Two-Microphone Adaptive System”, IEEE Trans. On Speech & Audio Proc., vol. 5, No. 6, Nov. 1997, pp. 543-551.
Greenberg, “Modified LMS Algorithms for Speech Processing with an Adaptive Noise Canceller”, IEEE Trans. On Speech & Audio Proc., vol. 6, No. 4, Jul. 1998, pp. 338-351.
Van Tasell, “New DSP instrument designed to maximize binaural benefits”, , The Hearing Journal, vol. 51, No. 4, Apr. 1998, pp. 40-49.
Edwards et al., “New digital processor for hearing loss compensation is based on auditory system”, The Hearing Journal, vol. 51, No. 8, Aug. 1998.
Stadler et al., “On the potential of fixed arrays for hearing aids”, J. Acoust. Soc. Am. 94 (3), Pt. 1, Sep. 1993, pp. 1332-1342.
Zurek et al., “Prospects and Limitations of Microphone-Array Hearing Aids”, World Scientific, Aug. 1995, pp. 233-244.
Killion et al., “Real-world performance of an ITE directional microphone”, The Hearing Journal., vol. 51, No. 4, Apr. 1998, pp. 1-6.
Killion, “SNR Loss: ‘I CanHearWhat People Say, But I Can'tUnderstandThem’”, The Hearing Rev., vol. 4, No. 12, Dec. 1997.
Edwards et al., “Signal-processing algorithms for a new software-based, digital hearing device”, The Hearing Journal, vol. 51, No. 9, Sep. 1998.
Killion, “The SIN report: circuits haven't solved the hearing-in-noise problem”, The Hearing Journal., vol. 50, No. 10, Oct. 1997, pp. 28-31.
Cadalli et al., “Wideband Maximum Likelihood Direction Finding and Signal Parameter Estimation by Using the Tree-Structured EM Algorithm”, IEEE Trans. On Signal Proc., vol. 47, No. 1, Jan. 1999, pp. 201-206.
Souza et al., “Quantifying the Contribution of Audibility to Recognition of compression-Amplified Speech”, Ear & Hearing, vol. 20, No. 1, Feb. 1999, pp. 12-20.
microZOOM™, Marketing pamphlet, Phonak, 2 pgs.
Senso: The Single Most Advanced Hearing Instrument Ever Developed, Marketing pamphlet, Widex, 2 pgs.
“HJReport”, The Hearing Journal, vol. 50, No. 8, Aug. 1997, pp. 7-8.
International Search Report, EPO/ISA, re PCT/US01/08256, dated Aug. 2, 2002.
Apherma Corporation
Beyer Weaver & Thomas LLP
Chin Vivian
Michalski Justin
LandOfFree
Adaptive microphone matching in multi-microphone directional... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Adaptive microphone matching in multi-microphone directional..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive microphone matching in multi-microphone directional... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3719838