Speech recognition apparatus and speech recognition method
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United States of America Patent
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Jul 4, 2017
Grant Date -
Dec 22, 2016
app pub date -
Jun 13, 2016
filing date -
Jun 18, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A speech recognition apparatus includes: a sound collection unit that collects a sound signal; a sound source localization unit that calculates a spatial spectrum from the sound signal that is collected by the sound collection unit and uses the calculated spatial spectrum to perform sound source localization; a speech zone determination unit that determines a zone in which a power of the spatial spectrum that is calculated by the sound source localization unit exceeds a predetermined threshold value based on a vehicle state; and a speech recognition unit that performs speech recognition with respect to a sound signal of the zone determined by the speech zone determination unit.
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