System for managing feedback

Details System for managing feedback System for managing feedback

2008-10-31

2011-10-25

Ho, Tu-Tu (Department: 2818)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Noise compensation circuit

C381S093000

Reexamination Certificate

active

08045738

ABSTRACT:
Feedback detection, adaptive notch filtering, and gain adjustment are combined for managing feedback. Feedback detection includes detection of short term and long term spectral peaks and assessing their magnitude, shape, rate of growth, and power concentration ratio. A plurality of notch filters are available and are allocated according to the spectral magnitude of the feedback detected. Wide band gain adjustment supplements the notch filters.

REFERENCES:
patent: 7995780 (2011-08-01), Pedersen et al.
http://www.cs.princeton.edu/sound/research/controllers/etabla/hillClimbing.m.

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