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1. 发明授权

US09118997B2 Speaker device and filter coefficient generating device therefor 有权
标题翻译：扬声器装置及滤波系数发生装置
公开(公告)号：US09118997B2
公开(公告)日：2015-08-25
申请号：US13642859
申请日：2010-04-26
申请人： Satoshi Miyata , Toshimitsu Suetsugu
发明人： Satoshi Miyata , Toshimitsu Suetsugu
IPC分类号： H04R3/04 , H04R3/12 , H04R1/40 , H04R27/00
CPC分类号： H04R3/12 , H04R1/403 , H04R27/00
摘要： To provide a speaker device that can form a substantially uniform sound field over a range from a long distance to a short distance without significantly increasing a calculation load. A plurality of FIR filters 21 to 2n perform delay control of respective speakers so as to increase a delay time difference between adjacent speakers 51 to 5n in a line array speaker 5 toward one end of the line array speaker 5, and thereby over a wide range from a long distance to a short distance, a sound filed 12 is formed. Also, by adding a common shift delay time Dc to filter coefficients for the FIR filters 21 to 2n, the delay time difference between adjacent speakers 51 to 5n is made less than a sampling period of a sound signal to form a wide and uniform sound field 12.
摘要翻译：提供一种扬声器装置，其能够在从远距离到短距离的范围内形成基本上均匀的声场，而不会显着增加计算负荷。多个FIR滤波器21至2n执行各个扬声器的延迟控制，以便将线阵列扬声器5中的相邻扬声器51至5n之间的延迟时间差增加到线阵列扬声器5的一端，从而在较宽范围内从长距离到短距离，形成声场12。此外，通过添加公共移位延迟时间Dc以对FIR滤波器21至2n的系数进行滤波，使得相邻扬声器51至5n之间的延迟时间差小于声音信号的采样周期，以形成宽而均匀的声场 12。

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