Patent ID: 7978866

Claim:
An acoustics correcting apparatus, comprising: a measurement signal supplying section supplying a time stretched pulse (TSP) measurement signal for measurement to multiple speakers at arbitrary positions; first and second collecting sections spaced apart from each other and collecting sound output from the speakers with the supplied TSP measurement signal; a first distance calculating section calculating the distance from each of the speakers to the first collecting section based on the first collected signal captured by the first collecting section and the TSP measurement signal; a second distance calculating section calculating the distance from each of the speakers to the second collecting section based on the second collected signal captured by the second collecting section and the TSP measurement signal; a position information calculating section calculating position information of each of the speakers from the first and second collecting sections based on the distances from each of the speakers calculated by the first and second distance calculating sections to the first and second collecting sections; an acoustics measuring section measuring acoustics by the multiple speakers placed at the arbitrary positions based on the first and second collected signals and the TSP measurement signal; a virtual sound image coefficient selecting section selecting an optimum virtual sound image coefficient from multiple virtual sound image coefficients based on the position information calculated by the position information calculating section; a correction characteristic calculating section calculating an optimum correction characteristic based on the acoustics measured by the acoustics measuring section; a virtual sound image localization processing section performing virtual sound image localization processing on reproduction signals for the speakers based on the virtual sound image coefficient selected by the virtual sound image coefficient selecting section; and an acoustics correcting section correcting the acoustics of the reproduction signals for the speakers based on the correction characteristic calculated by the correction characteristic calculating section, wherein the acoustics measured by the acoustics measuring section include sound pressure levels of the multiple speakers measured based on the first and second collected signals and the TSP measurement signal, and the correction characteristic calculating section calculates the optimum correction characteristic based on the sound pressure levels of the multiple speakers.