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Class Information
Number: 381/345
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Having acoustic wave modifying structure > Acoustic enclosure
Description: Subject matter including a housing surrounding the electro-acoustic transducer wherein the housing is specifically configured to modify characteristics of sound emitted or received by the transducer.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5309518 |
Multiple driver electroacoustical transducing |
May. 3, 1994 |
| 5304747 |
Speaker with motor-controlled internal baffle |
Apr. 19, 1994 |
| 5303209 |
Electroacoustic transducer having a partition wall and a mask wall |
Apr. 12, 1994 |
| 5261006 |
Loudspeaker system comprising a helmholtz resonator coupled to an acoustic tube |
Nov. 9, 1993 |
| 5025885 |
Multiple chamber loudspeaker system |
Jun. 25, 1991 |
| 4969196 |
Speaker and horn array |
Nov. 6, 1990 |
| 4949806 |
Headset for underwater use |
Aug. 21, 1990 |
| 4949387 |
Electro-acoustic transducer unit |
Aug. 14, 1990 |
| 4937877 |
Modular microphone assembly |
Jun. 26, 1990 |
| 4903249 |
Rigid foraminous microphone probe for acoustic measurement in turbulent flow |
Feb. 20, 1990 |
| 4899636 |
Instrument for tuning musical instruments |
Feb. 13, 1990 |
| 4875546 |
Loudspeaker with acoustic band-pass filter |
Oct. 24, 1989 |
| 4864611 |
Telephone handset attachment for use in-the-ear hearing aids |
Sep. 5, 1989 |
| 4860368 |
Acoustic transducers with improved frequency response |
Aug. 22, 1989 |
| 4843628 |
Inertial microphone/receiver with extended frequency response |
Jun. 27, 1989 |
| 4836326 |
Optimal shadow omniphonic microphone and loudspeaker system |
Jun. 6, 1989 |
| 4829581 |
Electrodynamic transducer comprising a two-part diaphragm |
May. 9, 1989 |
| 4819761 |
Tubular loudspeaker system |
Apr. 11, 1989 |
| 4727583 |
Telephone transducer with improved frequency response |
Feb. 23, 1988 |
| 4718098 |
Multi-diaphragm artificial reverberation device |
Jan. 5, 1988 |
| 4714133 |
Method and apparatus for augmentation of sound by enhanced resonance |
Dec. 22, 1987 |
| 4701749 |
Electroacoustic calling device with universal bearing supporting a sound aperture closure member |
Oct. 20, 1987 |
| 4636591 |
Integral transmitter and modular jack assembly for a telephone set |
Jan. 13, 1987 |
| 4633045 |
Differential microphone |
Dec. 30, 1986 |
| 4604792 |
Method for making electro-acoustic transducer apparatus |
Aug. 12, 1986 |
| 4584702 |
Noise cancelling telephone transmitter insertable in telephone handset receptacle |
Apr. 22, 1986 |
| 4511768 |
Mounting arrangement for altering a microphone's frequency response |
Apr. 16, 1985 |
| 4451711 |
Readily portable speaker enclosure |
May. 29, 1984 |
| 4449019 |
Piezoelectric loudspeaker |
May. 15, 1984 |
| 4439643 |
System assembly for mounting electrical apparatus on walls and ceilings |
Mar. 27, 1984 |
| 4331840 |
Electret transducer with tapered acoustic chamber |
May. 25, 1982 |
| 4284844 |
Loudspeaker system |
Aug. 18, 1981 |
| 4276446 |
Acoustic transducer system |
Jun. 30, 1981 |
| 4268718 |
Housing acoustical amplifier |
May. 19, 1981 |
| 4176253 |
Current loaded pneumatically driven loudspeaker arrangements |
Nov. 27, 1979 |
| 4145571 |
Loudspeaker enclosure with acoustically coupled loudspeaker damper |
Mar. 20, 1979 |
| 4122911 |
Loudspeaker assembly |
Oct. 31, 1978 |
| 4086445 |
Telephone handset transmitter with improved output response |
Apr. 25, 1978 |
| 4078155 |
Telephone apparatus for use in a conference room |
Mar. 7, 1978 |
| 4064375 |
Vacuum stressed polymer film piezoelectric transducer |
Dec. 20, 1977 |
| 4063387 |
Hanging planter pot speaker enclosure |
Dec. 20, 1977 |
| 4052564 |
Masking sound generator |
Oct. 4, 1977 |
| 4006308 |
Loudspeaker arrangement |
Feb. 1, 1977 |
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