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Class Information
Number: 381/347
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Having acoustic wave modifying structure > Acoustic enclosure > Acoustic resistance > On front side of diaphragm
Description: Subject matter in which an acoustic resistance is placed within a primary sound radiation path of a vibrating membrane of a transducer.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7466837 |
Diffuser and speaker using the same |
Dec. 16, 2008 |
| 7463746 |
Narrow opening electroacoustical transducing |
Dec. 9, 2008 |
| 7433483 |
Narrow profile speaker configurations and systems |
Oct. 7, 2008 |
| 7333626 |
Arbitrary coverage angle sound integrator |
Feb. 19, 2008 |
| 7324654 |
Arbitrary coverage angle sound integrator |
Jan. 29, 2008 |
| 7187105 |
Transducer with coupled vibrators |
Mar. 6, 2007 |
| 7155021 |
Loudspeaker having an acoustic panel and an electrical driver |
Dec. 26, 2006 |
| 7093688 |
Structure for preventing the generation of standing waves and a method for implementing the same |
Aug. 22, 2006 |
| 6574344 |
Directional horn speaker system |
Jun. 3, 2003 |
| 6470088 |
Vented loudspeaker enclosure with limited driver radiation |
Oct. 22, 2002 |
| 5119429 |
Audio installation, in particular stereophonic, for television sets with a large built-in low-frequency loudspeaker |
Jun. 2, 1992 |
| 5117463 |
Speaker system having directivity |
May. 26, 1992 |
| 5058154 |
Telephone handset having a pure acoustic resistance connection |
Oct. 15, 1991 |
| 4503564 |
Opto-acoustic transducer for a telephone receiver |
Mar. 5, 1985 |
| 4389542 |
Orthodynamic headphone |
Jun. 21, 1983 |
| 4292561 |
Attenuating means for electroacoustic transducer |
Sep. 29, 1981 |
| 4170720 |
AGC circuit particularly for a hearing aid |
Oct. 9, 1979 |
| 4163876 |
Electro-acoustic transducer with variable thickness foam surfaced diaphragm |
Aug. 7, 1979 |
| 4012605 |
Input/output transducer with damping arrangement |
Mar. 15, 1977 |
| 4008374 |
Loudspeaker systems |
Feb. 15, 1977 |
| 3944757 |
High-fidelity moving-coil loudspeaker |
Mar. 16, 1976 |
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