Journal of Radio Electronics. eISSN 1684-1719. 2023. №10
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DOI: https://doi.org/10.30898/1684-1719.2023.10.3

software and hardware methods of suppression

of electroacoustic feedback

in radio-electronic audio monitoring systems

N.R. Levchenko, M.S. Kostin

MIREA – Russian Techno-logical University

119454, Russia, Moscow, Vernadskogo Ave., 78

The paper was received June 5, 2023.

Abstract. The purpose of the article is to analyze software and hardware methods of suppression of electroacoustic feedback in radioelectronic systems of audio monitoring and television production. The work shows a numerical analysis of signal methods for compensating positive feedback of radio acoustics, as well as an architectural DSP solution for constructing a notch equalization ruler with auto-tracking multitonal sound suppression based on an ADAU1701 audio processor. Methods: algorithms of digital signal processing, theory of stability of sound-amplifying and sound-picking radio systems, methods of signal radio acoustics, theory and methods of analysis of self-oscillating circuits, vector theory of the sound field. Results: the causes of electroacoustic feedback have been identified; an adaptive algorithm for suppressing electroacoustic feedback has been proposed and investigated; an experiment with the use of an electroacoustic feedback auto-suppression submodule has been analyzed.

Key words: signal radio acoustics, electroacoustic feedback, feedback suppressor, radio electronic audio monitoring system.

Corresponding author: Levchenko Nikita Romanovich, levchenko_n@mirea.ru

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For citation:

N.R. Levchenko, M.S. Kostin. Software and hardware methods of suppression of electroacoustic feedback in radio-electronic audio monitoring systems. // Journal of Radio Electronics. – 2023. – №. 10. https://doi.org/10.30898/1684-1719.2023.10.3 (In Russian)