发明名称 |
Automatic sound volume control device |
摘要 |
An automatic sound volume control device for use in a device such as a radio or tape player used in a high ambient noise environment. The noise and sound signal levels above predetermined reference levels are detected and a control signal is produced having a level determined in accordance with the output signals so produced. The amplification gain of the sound signal is set by this control signal. Several different ways of producing the control signal are described, each of which has particular advantages in different situations and for different types of reproduced sound.
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申请公布号 |
US4553257(A) |
申请公布日期 |
1985.11.12 |
申请号 |
US19830489291 |
申请日期 |
1983.04.28 |
申请人 |
PIONEER ELECTRONIC CORP. |
发明人 |
MORI, SHUICHI;FUKATSU, YASUMASA;SAKAKIBARA, TAKASHI |
分类号 |
H03G3/32;(IPC1-7):H03G3/00 |
主分类号 |
H03G3/32 |
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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