Assignee
ACOUSTIC TECH INC
US·28 granted patents·11 pending applications·702 citations·filing 1998–2013
Top patents by PatentIndex Score
39 records- 0196US6111957AApparatus and method for adjusting audio equipment in acoustic environmentsACOUSTIC TECH INC·Filed 1998·Granted Aug 29, 2000·209 cites·10 claims
- 0287US7454010B1Noise reduction and comfort noise gain control using bark band weiner filter and linear attenuationACOUSTIC TECH INC·Filed 2004·Granted Nov 18, 2008·57 cites·8 claims
- 0378US7555117B2Path change detector for echo cancellationACOUSTIC TECH INC·Filed 2005·Granted Jun 30, 2009·7 cites·12 claims
- 0477US7492889B2Noise suppression based on bark band wiener filtering and modified doblinger noise estimateACOUSTIC TECH INC·Filed 2004·Granted Feb 17, 2009·27 cites·15 claims
- 0576US7649988B2Comfort noise generator using modified Doblinger noise estimateACOUSTIC TECH INC·Filed 2004·Granted Jan 19, 2010·26 cites·10 claims
- 0666US6268766B1Band pass filter from two notch filtersACOUSTIC TECH INC·Filed 1999·Granted Jul 31, 2001·17 cites·9 claims
- 0765US6421443B1Acoustic and electronic echo cancellationACOUSTIC TECH INC·Filed 1999·Granted Jul 16, 2002·31 cites·11 claims
- 0864US6754337B2Telephone having four VAD circuitsACOUSTIC TECH INC·Filed 2002·Granted Jun 22, 2004·11 cites·12 claims
- 0964US6492865B1Band pass filter from two filtersACOUSTIC TECH INC·Filed 2000·Granted Dec 10, 2002·8 cites·14 claims
- 1063US6891809B1Background communication using shadow of audio signalACOUSTIC TECH INC·Filed 1999·Granted May 10, 2005·35 cites·5 claims
- 1162US6847930B2Analog voice activity detector for telephoneACOUSTIC TECH INC·Filed 2002·Granted Jan 25, 2005·6 cites·10 claims
- 1262US6404279B2Band pass filter with improved group delayACOUSTIC TECH INC·Filed 2000·Granted Jun 11, 2002·9 cites·9 claims
- 1362US6278785B1Echo cancelling process with improved phase controlACOUSTIC TECH INC·Filed 1999·Granted Aug 21, 2001·35 cites·16 claims
- 1460US6166573AHigh resolution delay lineACOUSTIC TECH INC·Filed 1999·Granted Dec 26, 2000·24 cites·12 claims
- 1557US7046792B2Transmit/receive arbitratorACOUSTIC TECH INC·Filed 2001·Granted May 16, 2006·4 cites·7 claims
- 1655US6301364B1Tagging echoes with low frequency noiseACOUSTIC TECH INC·Filed 1999·Granted Oct 9, 2001·28 cites·4 claims
- 1754US6798881B2Noise reduction circuit for telephonesACOUSTIC TECH INC·Filed 1999·Granted Sep 28, 2004·22 cites·12 claims
- 1854US6252967B1Reducing acoustic feedback with digital modulationACOUSTIC TECH INC·Filed 1999·Granted Jun 26, 2001·25 cites·15 claims
- 1952US6608898B1Band pass and notch filters for echo reduction with less phase distortionACOUSTIC TECH INC·Filed 1999·Granted Aug 19, 2003·11 cites·14 claims
- 2051US2014044274A1Estimating Direction of Arrival From Plural MicrophonesACOUSTIC TECH INC·Filed 2013·Application pending·0 cites
- 2150US6404278B2Separation of plural band pass filtersACOUSTIC TECH INC·Filed 2000·Granted Jun 11, 2002·4 cites·7 claims
- 2250US2004234067A1Distributed VAD control system for telephoneACOUSTIC TECH INC·Filed 2003·Application pending·0 cites
- 2349US7031461B2Robust adaptive filter for echo cancellationACOUSTIC TECH INC·Filed 2004·Granted Apr 18, 2006·3 cites·10 claims
- 2449US2005213745A1Voice activity detector for low S/NACOUSTIC TECH INC·Filed 2004·Application pending·0 cites
- 2548US7570937B2Comfort noise generatorACOUSTIC TECH INC·Filed 2003·Granted Aug 4, 2009·2 cites·10 claims
- 2648US7295976B2Voice activity detector for telephoneACOUSTIC TECH INC·Filed 2002·Granted Nov 13, 2007·2 cites·12 claims
- 2748US2008043998A1Line interface for telephoneACOUSTIC TECH INC·Filed 2006·Application pending·0 cites
- 2846US6379323B1Bio erodable myringotomy tubeACOUSTIC TECH INC·Filed 1999·Granted Apr 30, 2002·40 cites·7 claims
- 2946US2008043931A1Calibration system for telephoneACOUSTIC TECH INC·Filed 2006·Application pending·0 cites
- 3045US2008043995A1Histogram for controlling a telephoneACOUSTIC TECH INC·Filed 2006·Application pending·0 cites
- 3145US2008043997A1Noise threshold matrix for controlling audio processingACOUSTIC TECH INC·Filed 2006·Application pending·0 cites
- 3243US2003216907A1Enhancing the aural perception of speechACOUSTIC TECH INC·Filed 2002·Application pending·0 cites
- 3342US2002141568A1Dual threshold correlatorACOUSTIC TECH INC·Filed 2001·Application pending·0 cites
- 3442US2002097861A1Narrow band shadow encoderACOUSTIC TECH INC·Filed 2001·Application pending·0 cites
- 3541US6625286B1Precise amplitude correction circuitACOUSTIC TECH INC·Filed 1999·Granted Sep 23, 2003·17 cites·14 claims
- 3639US6186965B1Dissolvable septal splint and method of using the sameACOUSTIC TECH INC·Filed 1999·Granted Feb 13, 2001·28 cites·18 claims
- 3737US6191334B1Perforation repair device and methodACOUSTIC TECH INC·Filed 1999·Granted Feb 20, 2001·11 cites·6 claims
- 3835US6255877B1Wide range, variable phase shift circuitACOUSTIC TECH INC·Filed 1999·Granted Jul 3, 2001·3 cites·9 claims
- 3929US2007047731A1Clipping detector for echo cancellationACOUSTIC TECH INC·Filed 2005·Application pending·0 cites
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