TY JOUR TI Hybrid technique of speech signal noise reduction for video conferencing system KW video conference KW speech signal KW noise suppression KW signal quality KW spectrum KW filter coefficient KW noise threshold KW frequency band KW Bark scale KW recurrent neural networks JO Vestnik of Astrakhan State Technical University. Series: Management, computer science and informatics AU Belov, S.. AU Katunin, S.. PY 2023 IS PB Astrakhan State Technical University