VISSONIC Electronics Ltd.
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1. Product Introduction
1.1 Product function overview
VIS-FS100-A feedback suppressor independently developed by VISSONIC uses a powerful
signal processor and a fully automatic adaptive algorithm. It is easy to use. On the basis of
supporting 4-line/microphone input, it is also equipped with AUDIOLINK digital audio cascade
interface, while supporting the 5-channel automatic mixer.
Feedback suppression function:
VISSONIC feedback suppressor uses a powerful signal processor and fully automatic adaptive
algorithm. It uses echo cancellation and de-reverberation algorithms to eliminate feedback by
actively filtering room reverberation that causes signal feedback. By adding masked (inaudible)
noise to the output signal (music mode) or only shifting the frequency of the output signal by 5 Hz
(voice mode), the feedback suppressor can detect the reverberant component of the signal and
eliminate it in Before feedback occurs, keep the original signal unchanged.
Automatic mixing function:
VISSONIC feedback suppressor also has a built-in automatic mixer to realize four-way
microphone input. In many cases, such as on a podium, forum or conference table, the use of the
above two microphones can better capture the voice of a moving speaker, and this often increases
the risk of acoustic feedback.
In view of this problem, the automatic mixer in the feedback suppressor will automatically
reduce the gain of the microphone with the weaker signal input and increase the gain of the other
microphone with the stronger signal input. In this way, it can track the moving speaker and produce
the best sound clarity. At the same time, since the total amount of gain remains constant, the
maximum volume without acoustic feedback is maintained.
