发明名称 |
Superdirectional acoustic system and projector |
摘要 |
A superdirectional acoustic system for reproducing a sound signal supplied from a real sound source by using a superdirectional speaker and producing a virtual sound source in a vicinity of a sound wave reflection surface. The system includes an ultrasonic speaker, which includes an ultrasonic transducer for oscillating a sound wave in an ultrasonic frequency band, for reproducing an audio signal in a relatively medium to high frequency sound range, which is included in the sound signal supplied from the real sound source; and a low frequency sound reproducing speaker for reproducing an audio signal in a relatively low frequency sound range, which is included in the sound signal supplied from the real sound source. Sound in the medium-high frequency range is reproduced in a manner such that the sound is produced from a virtual sound source which is formed in the vicinity of the sound signal reflection surface such as a screen. |
申请公布号 |
US8130973(B2) |
申请公布日期 |
2012.03.06 |
申请号 |
US20050630590 |
申请日期 |
2005.06.20 |
申请人 |
UETAKE AKIHITO;MATSUZAWA KINYA;SEIKO EPSON CORPORATION |
发明人 |
UETAKE AKIHITO;MATSUZAWA KINYA |
分类号 |
H04B3/00;G10K15/02;H04R1/20;H04R1/40;H04R3/00;H04R25/00 |
主分类号 |
H04B3/00 |
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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