发明名称 |
SOUND COLLECTION/REPRODUCTION METHOD AND DEVICE |
摘要 |
To provide a sound collection system using a plurality of microphones arranged in the proximity to one another and having an excellent directivity for an arbitrary position in the sound field space. A plurality of control points are set around a plurality of sound collecting microphones. A desired response function matrix A(omega) and a transfer function matrix C(omega) between the control points and the respective microphones are measured. A control filter H arranged in a digital signal processing unit (2) is connected to each of the microphones constituting the sound collection device (1). The control filters H are arranged for the number of output channels of a reproduction unit (4). An output of each of the control filters H is added for each channel and outputted to each channel of the reproduction unit (4). By specifying a microphone directivity upon sound collection at a control point, the control filters H are decided according to the measured desired response function matrix A(omega) and the transfer function matrix C(omega) of the specified control point. |
申请公布号 |
US2010027808(A1) |
申请公布日期 |
2010.02.04 |
申请号 |
US20060094491 |
申请日期 |
2006.11.30 |
申请人 |
HAMADA HAREO;MURAYAMA YOSHITAKA;GOTO AKIRA |
发明人 |
HAMADA HAREO;MURAYAMA YOSHITAKA;GOTO AKIRA |
分类号 |
H04R3/00 |
主分类号 |
H04R3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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