Hearing aid with an oscillation detector, and method for...

Details Hearing aid with an oscillation detector, and method for... Hearing aid with an oscillation detector, and method for...

2006-04-04

2006-04-04

Kuntz, Curtis (Department: 2643)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Spectral control

C381S320000, C381S093000, C381S083000

Reexamination Certificate

active

07024011

ABSTRACT:
In a hearing aid having an oscillation detector and a method for establishing the presence of oscillations in a hearing aid, sinusoidal input signals of the microphone can be detected, and so oscillations that are present can also be detected. To this end, the number of digitized sample values in consecutive periods of the input signal is determined, and a long-term average value NLand a short-term average value NKare formed from these numbers. When NLand NKare essentially identical, the presence of oscillations is detected.

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patent: OS 37 33 983 (1989-04-01), None
patent: WO 96/35314 (1996-11-01), None
“Reducing Acoustic Feedback in Hearing Aids,” Maxwell et al., IEEE Trans. on Speech Audio Processing, vol. 3, No. 4, Jul. 1995, pp. 304-313.

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