| 发明名称 |
HEADDPHONE DEVICE |
| 摘要 |
PURPOSE:To reduce the weariness when receiving by facilitating the control of sensings of direction and distance of image, by means of producing the signal equivalent to the indirect sound when receiving with speaker, thereby adding it to the signal equivalent to the direct sound and impressing it on the headphone. |
| 申请公布号 |
JPS5242701(A) |
申请公布日期 |
1977.04.02 |
| 申请号 |
JP19750119199 |
申请日期 |
1975.10.01 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
YAMADA AKITOSHI;GOTOU TOSHIYUKI;KIMURA YOUICHI;KIKUCHI YOSHINOBU |
| 分类号 |
H04R5/033;H04R1/10;H04R3/00;H04R5/04;H04S1/00 |
主分类号 |
H04R5/033 |
| 代理机构 |
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代理人 |
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