Sound-direction detector having a miniature sensor
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United States of America Patent
Stats
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Oct 8, 2013
Grant Date -
Jan 1, 2009
app pub date -
Jun 27, 2007
filing date -
Jun 27, 2007
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A representative embodiment of the invention provides a sound-direction detector having a miniature sensor coupled to a signal-processing block. The sensor has (i) a microphone responsive to a sound wave and (ii) a differential pressure sensor (DPS) responsive to a pressure difference induced by the sound wave between two inlet ports located in proximity to the microphone. The signal-processing block applies phase-sensitive detection to the output signal generated by the DPS, while using the output signal generated by the microphone as a reference for the phase-sensitive detection, to measure the pressure difference. The signal-processing block then determines direction to the sound-wave source based on the amplitude of the sound wave at the microphone and the measured pressure difference.
First Claim
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Family
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
ALCATEL LUCENT | FRENCH BOULOGNE BILLANCOURT |
International Classification(s)

- 2007 Application Filing Year
- H04R Class
- 1128 Applications Filed
- 773 Patents Issued To-Date
- 68.53 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Greywall, Dennis S | White House Station, US | 53 | 1005 |
# of filed Patents : 53 Total Citations : 1005 |
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Patent Citation Ranking
- 2 Citation Count
- H04R Class
- 2.47 % this patent is cited more than
- 12 Age
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11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 8, 2025 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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