Gun-woo LEE,Sang-chul KO,Young-sang LEE,Young-tae KIM
申请号：
US14256251
公开号：
US20140311499A1
申请日:
2014.04.18
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A headset to provide noise reduction may include a first microphone that is disposed outside the headset and detects external noise, a first blocking unit configured to block the external noise entering an inside of the headset, a second blocking unit configured to block external noise which is not blocked by the first blocking unit, a second microphone configured to detect internal noise of the headset including noise which is not blocked by the first blocking unit and the second blocking unit, and a speaker configured to output canceling noise to cancel the internal noise detected by the second microphone, wherein the second blocking unit surrounds the second microphone and comprises a one-way sound transmitting passage.
