发明名称 |
Dip filter frequency characteristic decision method |
摘要 |
Resonant frequencies f 2 and f 3 detected in a resonant space are determined as center frequencies of a dip. Based on measurement values at a speaker and a microphone in the resonant space, a basic amplitude frequency characteristic Ca and a target amplitude frequency characteristic Cd are found. A smoothness degree on a frequency axis is larger in the target amplitude frequency characteristic Cd than the basic amplitude frequency characteristic Ca. A damping level and quality factor of the dip are determined based on a difference between the basic amplitude frequency characteristic Ca and the target amplitude frequency characteristic Cd in the center frequencies f 2 and f 3 of the dip and frequencies near the center frequencies.
|
申请公布号 |
US2006251264(A1) |
申请公布日期 |
2006.11.09 |
申请号 |
US20060547123 |
申请日期 |
2006.04.26 |
申请人 |
ETANI ELECTRONICS CO., LTD. |
发明人 |
HIGASHIHARA DAISUKE;HINO SHOKICHIRO;TSUCHIYA KOICHI;ENDO TOMOHIKO |
分类号 |
H04R3/02;H04R29/00;G01H13/00;G10K15/00;H03F3/181;H03G5/16;H04R3/04 |
主分类号 |
H04R3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|