| 发明名称 |
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| 摘要 |
PURPOSE:To improve the signal-to-quantized noise ratio by using the scale factor and to reduce the audio memory of the telephone automatic response unit and further to automate the guide broadcast to the place having comparatively low noise level. |
| 申请公布号 |
JPS623440(B2) |
申请公布日期 |
1987.01.24 |
| 申请号 |
JP19760121553 |
申请日期 |
1976.10.08 |
| 申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
ARAI YASUHIKO |
| 分类号 |
H03M3/04;G01L1/06;G10L11/00;G10L19/00;H03M3/00;H04B1/66;H04B14/06 |
主分类号 |
H03M3/04 |
| 代理机构 |
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| 地址 |
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