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SIGNAL ARRIVAL DIRECTION DEDUCING DEVICE, SIGNAL ARRIVAL DIRECTION DEDUCING METHOD, AND SIGNAL ARRIVAL DIRECTION DEDUCING PROGRAM

外国特許コード F080002004
整理番号 F080002004
掲載日 2009年1月9日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2005JP016956
国際公開番号 WO 2006/030834
国際出願日 平成17年9月14日(2005.9.14)
国際公開日 平成18年3月23日(2006.3.23)
優先権データ
  • 特願2004-267380 (2004.9.14) JP
発明の名称 (英語) SIGNAL ARRIVAL DIRECTION DEDUCING DEVICE, SIGNAL ARRIVAL DIRECTION DEDUCING METHOD, AND SIGNAL ARRIVAL DIRECTION DEDUCING PROGRAM
発明の概要(英語) A signal arrival direction deducing device capable of deducing the signal arrival directioneven when a correlation matrix between input signals and noise correlation matrixare specific. In the device, observing means (1) observes a state in which onlynoise is present and a state in which a sound whose arrival direction is to be deducedis inputted, short time Fourier transform means (2) performs short time Fouriertransform, and correlation matrix computing means (3) computes a noise correlationmatrix and an input signal correlation matrix. The correlation matrices obtainedare held in noise correlation matrix holding means (4) and input signal correlationmatrix holding means (5) respectively. Using these correlation matrices, trueeigenvalue/true eigenvector/ false eigenvector computing means (6) computesthe true eigenvalue, the true eigenvector and the false eigenvector of the noisecorrelation matrix with respect to the input signal correlation matrix. Complementaryspace component matrix computing means (7) computes a matrix for determiningthe complementary space component of the signal partial space from the obtainedtrue eigenvalue, the true eigenvector, and the false eigenvector. Arrival directionsearching means (8) searches for the sound arrival direction using the matrixfor determining the complementary space component of the signal partial space.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • National University Corporation Hokkaido University
  • 発明者(英語)
  • Tanaka, Akira
国際特許分類(IPC)
指定国 AE AG AL AM AT AU AZ BA BB BE BF BG BJ BR BW BY BZ CA CF CG CH CI CM CN CO CR CU CY CZ DE DK DM DZ EC EE EG ES FI FR GA GB GD GE GH GM GN GQ GR GW HR HU ID IE IL IN IS IT JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MC MD MG MK ML MN MR MW MX MZ NA NE NG NI NL NO NZ OM PG PH PL PT RO RU SC SD SE SG SI SK SL SM SN SY SZ TD TG TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW
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