Fast Keyword Spotting in Telephone Speech
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Date
2009
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Spolecnost Pro Radioelektronicke Inzenyrstvi
Technická Univerzita v Liberci
Technical university of Liberec, Czech Republic
Technická Univerzita v Liberci
Technical university of Liberec, Czech Republic
Abstract
In the paper, we present a system designed for detecting keywords in telephone speech. We focus not only on achieving high accuracy but also on very short processing time. The keyword spotting system can run in three modes: a) an off-line mode requiring less than 0.1xRT, b) an on-line mode with minimum (2 s) latency, and c) a repeated spotting mode, in which pre-computed values allow for additional acceleration. Its performance is evaluated on recordings of Czech spontaneous telephone speech using rather large and complex keyword lists.
Description
Subject(s)
Speech processing, keyword spotting, speech decoder, HLDA transformation
Citation
ISSN
1210-2512