BIOMETRIC, PHYSIOLOGICAL OR ENVIRONMENTAL MONITORING USING A CLOSED CHAMBER
- 专利权人:
- 发明人:
- Steven Wayne Goldstein
- 申请号：
- US15334995
- 公开号：
- US20170112671A1
- 申请日:
- 2016.10.26
- 申请国别(地区):
- US
- 年份:
- 2017
- 代理人:
- 摘要：
- An aural iris includes a lumen and an actuator coupled on or in or to the lumen for at least partially attenuating sound traversing through the lumen by selectively actuating the actuator on and off. Other embodiments are disclosed.
- 来源网站：
- 中国工程科技知识中心
