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Industrial Automatic Control Systems and Controllers

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The Device of Weakening the Acoustic Feedback with Companding the Envelope of the Speech Signal
Galiev A.L., Shishkina A.F.

The subject of this article is the way of reducing the parasitic acoustic feedback by controlling the coefficient of amplifier gain according to the envelope signal changes law. One of the particular criteria of stability, that establishes the sign of the start of self-excitation of electroacoustic system, is examined in the article. Keywords: compander, envelope signal, dynamic range, instantaneous frequency, compressor. E-mail: galievanvar@mail.ru. Pp. 48-50.

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Instrument-Making and Automation Means. Encyclopedic Textbook
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Industrial Automatic Control Systems and Controllers
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