Method of processing an acoustic signal, and a hearing...

Details Method of processing an acoustic signal, and a hearing... Method of processing an acoustic signal, and a hearing...

2008-01-15

2008-01-15

Tran, Sinh (Department: 2615)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Wideband gain control

C381S107000

Reexamination Certificate

active

07319770

ABSTRACT:
A method of processing an acoustic input signal into an output signal in a hearing instrument includes converting the acoustic input signal into a converted input signal, and applying a gain to the converted input signal to obtain the output signal. According to the invention, the gain is calculated using a room impulse attenuation value being a measure of a maximum negative slope of the a converted input signal power on a logarithmic scale. The calculation of the gain may include evaluating a signal power development value being a measure of the actual converted input signal power attenuation or signal power increase, evaluating a signal-to-reverberation-noise ratio from the signal power development value and the room impulse attenuation value, and calculating, based on a gain rule, said gain from said signal-to-reverberation-noise ratio.

REFERENCES:
patent: 3111186 (1963-11-01), Schroeder
patent: 4069395 (1978-01-01), Nash
patent: 4087633 (1978-05-01), Fitzwilliam
patent: 4131760 (1978-12-01), Christensen et al.
patent: 4571461 (1986-02-01), Uno et al.
patent: 5668794 (1997-09-01), McCaslin et al.
patent: 5774562 (1998-06-01), Furuya et al.
patent: 5793875 (1998-08-01), Lehr et al.
patent: 6757395 (2004-06-01), Fang et al.
patent: 7095256 (2006-08-01), Zhak et al.
patent: 2005/0147262 (2005-07-01), Breebaart
patent: 0 719 028 (2003-07-01), None
patent: 00/60830 (2000-10-01), None
patent: 03/053033 (2003-06-01), None
Lebart, K et al: “A New Method Based on Spectral Substraction for Speech Dereverberation.” ACUSTICA, vol. 98 (2001) 359-366.

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