Excessive noise level alerting device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 1, 2008
Grant Date -
Jan 19, 2006
app pub date -
Jul 14, 2004
filing date -
Jul 14, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sound-detection and alerting system (SDAS) is designed for use in hospitals, offices, or other environments where excessive noise levels are of concern. The SDAS depends on several variables to trigger an alarm so that false alarms are kept to a minimum. A microphone circuit captures acoustic energy which is limited to specific frequencies by a bandpass filter. A comparator integrates the various frequencies and compares them to a threshold signal. A delay timer ensures that signals exceeding the threshold signal are persistent for a pre-determined period of time.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully