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A Hybrid VOX System Using Emulated Hardware Behaviors

Authors:
Eduardo Gonzalez
Stan McClellan

Keywords: silence detection, voice activity detection, VAD, VOX, voice-activated squelch, voice-activated switch

Abstract:
This paper analyzes two well-known but complementary speech detection algorithms, and combines them to create a robust, low complexity method of speech detection. Software emulation of behaviors important in venerable hardware-based voice-operated switches is key to hybrid system performance. We test the hybrid system in the context of amateur radio, where speech and in-band data is accurately detected in real-time, even in the presence of significant noise.

Pages: 105 to 110

Copyright: Copyright (c) IARIA, 2012

Publication date: April 29, 2012

Published in: conference

ISSN: 2308-3964

ISBN: 978-1-61208-193-9

Location: Chamonix, France

Dates: from April 29, 2012 to May 4, 2012