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Methods and systems for active sound attenuation in a fan unit
专利权人:
发明人:
Lawrence G. Hopkins
申请号:
US13626423
公开号:
US09380382B2
申请日:
2012.09.25
申请国别(地区):
US
年份:
2016
代理人:
摘要:
A system and method for controlling noise produced by an air handling system, for example, is provided. The system includes a source microphone to collect sound measurements from the air handling system and a processor to define a cancellation signal that at least partially cancels out the sound measurements. The system also includes a speaker to generate the cancellation signal. The sound measurements are at least partially canceled out within a region of cancellation. Accordingly, the system further includes a response microphone to collect response sound measurements at the region of cancellation. The processor tunes the cancellation signal based on the response sound measurements.
来源网站:
中国工程科技知识中心
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