Receiving apparatus and receiving method
A receiver including a plurality of wave receivers that receive signals arriving from a predetermined direction, a plurality of detection units that is connected to at least some of the plurality of wave receivers and detect arrival times of signals received by a connected wave receivers, and a plurality of adjustment units that adjust a deviation between arrival times of the plurality of wave receivers based on arrival times or arrival directions of the plurality of detected signals.
1 . A receiver comprising:
a plurality of wave receivers configured to receive sound waves arriving from a predetermined direction;
a plurality of detectors that is connected to at least some of the plurality of wave receivers and detect arrival times of sound waves received by a connected wave receiver; and
a plurality of adjusters configured to adjust a deviation of the arrival times of sound waves of between the plurality of wave receivers based on arrival times a plurality of detected sound waves
wherein the receiver further comprised:
an offset value calculator is configured to calculate a deviation between the arrival time of sound waves received by each wave receiver and a reference time, wherein
the plurality of adjusters is configured to adjust each sound wave received by each of the plurality of wave receivers so as to reduce the deviation calculated by the offset value calculator.
2 . The receiver according to claim 1 , further comprising:
a plurality of finite impulse response (FIR) filters configured to perform filtering processing using an adjusted sound waves as an input sound waves; and
a synthesizer configured to synthesize the output results of the plurality of FIR filters.
3 . The receiver according to claim 1 , wherein the offset value calculator sets a time obtained based on arrival times detected by the plurality of detectors or a preset time as the reference time.
4 . The receiver according to claim 1 , further comprising:
an arrival time estimator configured to estimate an arrival time of a sound waves received by each wave receiver based on an arrival time of a sound waves received by the wave receiver to which the plurality of detectors are connected, wherein
the plurality of detectors is connected to a part of the plurality of wave receivers, and
the offset value calculator calculates a deviation between an arrival time of a sound waves received by each wave receiver estimated by the arrival time estimator and the reference time.
5 . The receiver according to claim 1 , wherein the plurality of adjusters align a header of the each sound waves by padding the heads of the sound waves with zeros based on the deviation calculated by the offset value calculator.
6 . A receiving method comprising:
detecting an arrival time of sound waves received by at least two or more wave receivers among a plurality of wave receivers that receive the sound waves arriving from a predetermined direction; and
adjusting a deviation of the arrival times of sounds waves of between the plurality of wave receivers based on arrival times of a plurality of detected sound waves received by at least two or more wave receivers,
wherein the receiving method further comprised:
calculating a deviation between the arrival time of sound waves received by each wave receiver and a reference time, wherein
the adjusting each sound wave received by each of the plurality of wave receivers so as to reduce the deviation calculated.