Howling suppression device, hearing aid, howling suppression method, and integrated circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 1, 2015
Grant Date -
Oct 17, 2013
app pub date -
Jul 30, 2012
filing date -
Oct 14, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A howling suppression device includes a subtractor which subtracts a pseudo feedback signal from an input signal; an adaptive filter which produces a pseudo feedback signal for a next input signal; and a coefficient update control unit which controls an update rate of a filter coefficient of the adaptive filter and includes: a level calculation unit which calculates a signal level of the input signal; a signal-rising-edge detection unit which detects a rising-edge point; a reverberation section detection unit which detects a reverberation section; and an update rate control unit which sets the update rate to a first rate in the reverberation section and to a second rate in other sections. The adaptive filter updates the filter coefficient at the update rate set by the update rate control unit.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- A61F Class
- 4331 Applications Filed
- 3750 Patents Issued To-Date
- 86.59 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- A61F Class
- 0 % this patent is cited more than
- 10 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 1, 2027 |
