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Class Information
Number: 381/357
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Housed microphone > Directional > With plural sound ports (e.g., pressure gradient)
Description: Subject matter having two or more openings within the housing for the purpose of providing multiple sound paths leading to a transducer.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7316290 |
Acoustic lens system |
Jan. 8, 2008 |
| 7313246 |
Information system using eyewear for communication |
Dec. 25, 2007 |
| 7245726 |
Noise canceling microphone system and method for designing the same |
Jul. 17, 2007 |
| 7219763 |
Microphone assembly fitted to vehicle-mounted control module panel, that fits well |
May. 22, 2007 |
| 7215766 |
Headset with auxiliary input jack(s) for cell phone and/or other devices |
May. 8, 2007 |
| 7182324 |
Microphone isolation system |
Feb. 27, 2007 |
| 7162041 |
Noise canceling microphone with acoustically tuned ports |
Jan. 9, 2007 |
| 7136494 |
Vehicle accessory microphone assembly having a windscreen with hydrophobic properties |
Nov. 14, 2006 |
| 7130431 |
Vehicle accessory microphone |
Oct. 31, 2006 |
| 7120261 |
Vehicle accessory microphone |
Oct. 10, 2006 |
| 7116792 |
Directional microphone system |
Oct. 3, 2006 |
| 7110553 |
Directional microphone assembly for mounting behind a surface |
Sep. 19, 2006 |
| 7079663 |
Microphone |
Jul. 18, 2006 |
| 7072482 |
Microphone with improved sound inlet port |
Jul. 4, 2006 |
| 7013014 |
Hearing device system with behind-the-ear hearing aid devices fashioned side-specific |
Mar. 14, 2006 |
| 6885751 |
Pressure-gradient microphone capsule |
Apr. 26, 2005 |
| 6831987 |
Directional microphone assembly |
Dec. 14, 2004 |
| 6788796 |
Differential microphone |
Sep. 7, 2004 |
| 6788791 |
Delay network microphones with harmonic nesting |
Sep. 7, 2004 |
| 6766032 |
Voice tube assembly |
Jul. 20, 2004 |
| 6758303 |
Electronic device having a multi-mode acoustic system and method for radiating sound waves |
Jul. 6, 2004 |
| 6700986 |
Microphone characteristic adjustment device |
Mar. 2, 2004 |
| 6690806 |
Various directional/omni-directional hearing aid microphone and housing structures |
Feb. 10, 2004 |
| 6674996 |
Mobile phone accessory, particularly for the hands-free function, and an arrangement |
Jan. 6, 2004 |
| 6614911 |
Microphone assembly having a windscreen of high acoustic resistivity and/or hydrophobic material |
Sep. 2, 2003 |
| 6597793 |
Directional/omni-directional hearing aid microphone and housing |
Jul. 22, 2003 |
| 6542614 |
Boomless hearing/speaking configuration for sound receiving means |
Apr. 1, 2003 |
| 6477257 |
Directional microphone |
Nov. 5, 2002 |
| 6470176 |
Battery packs that facilitate acoustic communications and radiotelephones incorporating same |
Oct. 22, 2002 |
| 6418229 |
Directional microphone, in particular having symmetrical directivity |
Jul. 9, 2002 |
| 6396932 |
Pluggable noise-controlling apparatus and method |
May. 28, 2002 |
| 6285772 |
Noise control device |
Sep. 4, 2001 |
| 6285771 |
Directional microphone assembly |
Sep. 4, 2001 |
| 6158902 |
Boundary layer microphone |
Dec. 12, 2000 |
| 6148089 |
Unidirectional microphone |
Nov. 14, 2000 |
| 6108415 |
Noise cancelling acoustical improvement to a communications device |
Aug. 22, 2000 |
| 6091830 |
Transmitter structure for limiting the effects of wind noise on a microphone |
Jul. 18, 2000 |
| 6091828 |
Dynamic microphone |
Jul. 18, 2000 |
| 6009184 |
Noise control device for a boom mounted noise-canceling microphone |
Dec. 28, 1999 |
| 5995637 |
Assembly housing for electroacoustical transducer |
Nov. 30, 1999 |
| 5970159 |
Video monitor with shielded microphone |
Oct. 19, 1999 |
| 5909495 |
Noise canceling improvement to stethoscope |
Jun. 1, 1999 |
| 5862240 |
Microphone device |
Jan. 19, 1999 |
| 5854848 |
Noise control device |
Dec. 29, 1998 |
| 5848172 |
Directional microphone |
Dec. 8, 1998 |
| 5442713 |
Microphone packaging scheme |
Aug. 15, 1995 |
| 5373555 |
Unidirectional ear microphone and gasket |
Dec. 13, 1994 |
| 5329593 |
Noise cancelling microphone |
Jul. 12, 1994 |
| 5282245 |
Tubular bi-directional microphone with flared entries |
Jan. 25, 1994 |
| 5263093 |
Microphone device in use in for communication apparatus for motorcycle |
Nov. 16, 1993 |
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