| 摘要 |
System and device for receiving spatially mixed signals by a plurality of sensors and accurately removing a signal from a particular direction. The system includes a beamformer 1 for removing a signal coming from a particular direction by steering a null to the particular direction, a coefficient calculation unit 3 for calculating a coefficient for correcting the gain of the spectrum of the signal from a sensor M 1 according to the directivity characteristic of the beamformer 1 , a gain correction unit 4 for correcting the signal spectrum from the sensor M 1 by the calculated correction coefficient, and a spectrum correction unit 5 for correcting the signal spectrum outputted from the beamformer 1 by the corrected sensor signal spectrum. A plurality of sensor signals are received and a signal from a particular direction is removed by the beamformer 1 . The signal which has failed to be removed by the beamformer 1 is removed by the spectrum correction unit 5 at a later stage.
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