Howling control device and howling control method

Details Howling control device and howling control method Howling control device and howling control method

2007-03-13

2007-03-13

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Feedback suppression

C381S056000, C381S094200, C381S094300, C379S406140

Reexamination Certificate

active

10483176

ABSTRACT:
A howling control apparatus and howling control method for controlling time up to the cancellation of howling suppression according to a howling occurrence situation, thereby eliminating the repetition of howling suppression and cancellation. A howling detecting section (104) detects howling based on the band level and the band level average value and measures time for which no howling occurs, a waiting time setting section (105) decides waiting time to be set this time from time for which no howling occurs and a previous waiting time, and a gain control section (106) causes a gain that is set to a howling suppressing section (107) to be retuned to a normal value during the waiting time.

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