Acoustic characteristic correction coefficient calculation apparatus, acoustic characteristic correction coefficient calculation method and acoustic characteristic correction apparatus
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United States of America Patent
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Jul 1, 2014
Grant Date -
Nov 10, 2011
app pub date -
Mar 25, 2011
filing date -
May 7, 2010
priority date (Note) -
In Force
status (Latency Note)
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Abstract
According to one embodiment, an acoustic characteristic correction coefficient calculation apparatus includes a frequency converter, a smoother, a frequency inverter, a cutter, and a calculator. The frequency converter is configured to convert a first impulse response corresponding to an input acoustic signal to a frequency domain. The smoother is configured to smooth amplitude and phase corresponding to the frequency domain converted by the frequency converter. The frequency inverter is configured to convert a frequency characteristic smoothed by the smoother to a time domain. The cutter is configured to cut out a second impulse response configured by the time domain obtained by converting the frequency characteristic by use of the frequency inverter by a preset tap number. The calculator is configured to calculate a correction coefficient used to correct an acoustic characteristic based on a result cut out by the cutter.
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