Howling suppression control device

Abstract

Abstract PURPOSE:To suppress howling, by recognizing the howling signal waveform from the loudening signal taken out from an arbitrary position of the loop circulating once in the signal loudening system to change the gain of the signal transmission system. CONSTITUTION:When the howling waveform in the input signal is recognized from the amplitude value of the input signal for change of the primary differential output of the input signal, the gain of variable gain amplifier VA at this time is stored in memory MEM; and meanwhile, the variable gain amplifier is set to a gain lower than the gain stored in memory MEM again after gain control signal generating device CSG reduces the gain of the variable gain amplifier for a fixed time width determined previously.

Inventors

• 👤 Hiroyuki Takekura

Bibliographic Details