Akihiko Yamaguchi make speech without headset microphone
The existing Howling cancel technology is almost using notch filter effect to normalize frequency response. This method is not possible to gain up over 0 dB. Akihiro Yamaguchi made presentation and demonstration for his new method 'Adaptive Howling canceller' which is possible to cancel howling in case of over 0 dB gain. His speech was public addressed by this Adaptive howling canceller system. All Q & A conversation with 20 attendees and Akihiko Yamaguchi (no headset microphone) was easy to communicate very clearly on each other without any howling problem with one omni microphone and speaker in a meeting room.
