Acoustic Technologies, Inc.
32Patents
9Active
32Granted
40Portfolio score
Filing activity: Jul 2, 1998 → Dec 30, 2010 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6111957A | Apparatus and method for adjusting audio equipment in acoustic environments | Electricity | 182 | Expired |
| US7454010B1 | Noise reduction and comfort noise gain control using bark band weiner filter and linear attenuation | Physics | 35 | Active |
| US6379323B1 | Bio erodable myringotomy tube | Human Necessities | 26 | Expired |
| US6278785A | Echo cancelling process with improved phase control | Electricity | 22 | Expired |
| US8565446B1 | Estimating direction of arrival from plural microphones | Electricity | 21 | Active |
| US6301364A | Tagging echoes with low frequency noise | Electricity | 20 | Expired |
| US6891809B1 | Background communication using shadow of audio signal | Electricity | 20 | Expired |
| US7492889B2 | Noise suppression based on bark band wiener filtering and modified doblinger noise estimate | Physics | 18 | Active |
| US6186965A | Dissolvable septal splint and method of using the same | Human Necessities | 18 | Expired |
| US6166573A | High resolution delay line | Physics | 16 | Expired |
| US6421443B1 | Acoustic and electronic echo cancellation | Physics | 16 | Expired |
| US7649988B2 | Comfort noise generator using modified Doblinger noise estimate | Physics | 15 | Active |
| US6798881B2 | Noise reduction circuit for telephones | Electricity | 15 | Expired |
| US6252967A | Reducing acoustic feedback with digital modulation | Electricity | 13 | Expired |
| US6625286B1 | Precise amplitude correction circuit | Electricity | 12 | Expired |
| US6191334A | Perforation repair device and method | Human Necessities | 11 | Expired |
| US8126706B2 | Music detector for echo cancellation and noise reduction | Physics | 11 | Active |
| US8538008B2 | Acoustic echo canceler using an accelerometer | Electricity | 6 | Active |
| US6754337B2 | Telephone having four VAD circuits | Electricity | 6 | Expired |
| US6268766A | Band pass filter from two notch filters | Electricity | 5 | Expired |
| US6404279B2 | Band pass filter with improved group delay | Electricity | 5 | Expired |
| US6608898B1 | Band pass and notch filters for echo reduction with less phase distortion | Electricity | 5 | Expired |
| US7555117B2 | Path change detector for echo cancellation | Electricity | 4 | Active |
| US6404278B2 | Separation of plural band pass filters | Electricity | 3 | Expired |
| US6847930B2 | Analog voice activity detector for telephone | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.