发明名称 |
TRANSDUCER HAVING TWO DUCTS |
摘要 |
The present invention relates to a so-called bass-reflex electroacoustic transducing apparatus, wherein a plurality of sound ducts (ports) having the same equivalent mass and different lengths are provided in communication with a housing which incorporates therein an electroacoustic transducing element. Thus, resonance and antiresonance generated in respective sound ducts cancel each other out, thereby preventing a tone quality of a reproduced sound from being deteriorated.
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申请公布号 |
US5115473(A) |
申请公布日期 |
1992.05.19 |
申请号 |
US19900561864 |
申请日期 |
1990.08.02 |
申请人 |
SONY CORPORATION |
发明人 |
YAMAGISHI, MAKOTO;FUJIHIRA, MASAO;AZAMI, KAZUO;SHINOHARA, IKUO |
分类号 |
H04R1/02;H04R1/10;H04R1/28 |
主分类号 |
H04R1/02 |
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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