发明名称 |
Method and system for noise dosimeter with quick-check mode and earphone adapter |
摘要 |
A noise dosimeter with capability to rapidly predict noise exposure over an extended time period based on a measurement of short duration. Either an acoustic or an electrical earphone adapter provides a convenient means to connect the noise dosimeter to an external sound source. A direct input jack operable to receive at least one audio signal provides a signal to an RMS detector, which provides a DC signal to a two-stage amplifier circuit. The outputs of the amplifiers are provided to a processor having multiple A/D channels. The processor calculates accumulated noise doses and drives a display, which in one embodiment includes a panel of light-emitting diodes. In one embodiment, the dosimeter includes functionality for control of external devices such as sound boards. |
申请公布号 |
US8322222(B2) |
申请公布日期 |
2012.12.04 |
申请号 |
US20100945472 |
申请日期 |
2010.11.12 |
申请人 |
GOLDBERG JACK;FLAMME GREGORY A.;HELMINK DANA S.;KILLION MEAD C.;ETYMOTIC RESEARCH, INC. |
发明人 |
GOLDBERG JACK;FLAMME GREGORY A.;HELMINK DANA S.;KILLION MEAD C. |
分类号 |
G01H11/06;H01R13/66;H04R29/00 |
主分类号 |
G01H11/06 |
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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