To suppress discontinuity of signal generated during interference wave suppression and thus can suppress continuous noise sound using this.
From the computation results obtained a weight vector operator 3, an array response value is obtained (S21), the transition period of the array response value is set (S22), and from the array response value of initiation position and termination position of the transition period, an array response correction value is calculated (S23). Under this setting, whether the period is in the transition period is determined (S24). If it is in the transition period, by multiplying the weight and the array response correction value to the receiving signal, sudden changes in the gain in the directing azimuth is suppressed and is set as output data (S25). If it is outside of the transition period, only the weight is multiplied to the receiving signal and this is set as the output data (S26).
| JP2004336390A | 2004-11-25 | |||
| JP2004072489A | 2004-03-04 | |||
| JPH102948A | 1998-01-06 | |||
| JP2003270316A | 2003-09-25 | |||
| JP2004140419A | 2004-05-13 | |||
| JP2001211134A | 2001-08-03 |
| WO2004066523A1 | 2004-08-05 |
Satoshi Kono
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto