HeadWize Library - Design Showcase

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Design Showcase
The HeadWize Design Showcase features a selection of patents granted by the U.S. Patent and Trademark Office involving headphone design and acoustic simulation in headphones. They are arranged in reverse chronological order by issuance date. Acoustic Simulation Title: Method And Device For Processing A Multichannel Signal For Use With A Headphone Inventor: Timothy J. Tucker and David M. Green Patent Number: 5,742,689 Date Issued: 4/28/1998 Description: Simulating a virtual room with virtual loudspeakers through headphones. Title: Audio Signal Reproducing Apparatus Inventor: Kiyofumi Inanaga et al. Patent Number: 5,495,534 Date Issued: 2/27/1996 Description: An acoustic simulator with a head motion detector. Title: Stereo Headphone Sound Source Localization System Inventor: Danny D. Lowe et al. Patent Number: 5,371,799 Date Issued: 12/6/1994 Description: A sound positioning system for headphones. Title: Stereo Headphone Sound Source Localization System Inventor: Arnold Klayman Patent Number: 4,748,669 Date Issued: 5/31/1988 Description: A virtualizer based on ambience-recovery. Includes both the enhancement system and a perspective correction system for 3D sound in headphones and from stereo loudspeakers. Title: Method And Apparatus For Imparting To Headphones The Sound Reproducing Characteristics Of Loudspeakers Inventor: Jens Blauert et al. Patent Number: 3,920,904 Date Issued: 11/18/1975 Description: An active crossfeed filter with a response equal to the loudspeaker-to-eardrum transfer function divided by the headphone-to-eardrum transfer function. Includes a 4-channel design. Headphone Design Title: System for the Frontal Localization of Auditory Events Produced by Stereo Headphones Inventor: Florian M. König Patent Number: 5,784,477 Date Issued: 7/21/1998 Description: Headphone design with improved in-front localization. Title: Headphoning Inventor: Amar Bose Patent Number: 4,455,675 Date Issued: 6/19/1984 Description: A noise cancellation headphone with a compensatory filter of arbitrary phase to maximize open loop gain and extend effectiveness of ANR. Title: Four-Channel Headphone Inventor: Kazuho Ohta Patent Number: 3,796,840 Date Issued: 12/2/1971 Description: A 4-channel headphone with spatializer that inverts rear channel signals. Transducer Design Title: Auricle Insertion Headphone With Improved Grill Inventor: Ikuo Shinohara (Sony) Patent Number: 5,206,914 Date Issued: 5/30/1995 Description: Earbud with improved grill design that minimizes manufacturing defects. Title: Electrodynamic Acoustic Transducer Inventor: Ernst Schutter Patent Number: 5,471,437 Date Issued: 8/30/1994 Description: A compact, dynamic transducer having two parts - an acoustically active part and an annular part having an annular width for an ideal resilient suspension. Title: Electrostatic Acoustic Transducer Having Extremely Thin Diaphragm Substrate Inventor: Neil K. Fortney (Koss) Patent Number: 5,206,914 Date Issued: 4/27/1993 Description: Electrostatic transducer design employing a diaphragm coated with infrared-transparent material for high performance. Title: Electracoustic Transducer Inventor: Werner Fidi Patent Number: 4,447,678 Date Issued: 5/8/1984 Description: A two-way headphone transducer with a dynamic bass unit and electrostatic treble system. Title: Electret Earphone Inventor: Freeman Frahm Patent Number: 3,896,274 Date Issued: 7/23/1975 Description: Electret transducer design with improved polarization stability. Title: Electrostatic Acoustic Transducer Inventor: N. Atoji Patent Number: 3,833,770 Date Issued: 9/3/1974 Description: An electrostatic headphone transducer employing an electret diaphragm. Title: High Fidelity Insert Headphones Inventor: Steven Iseberg and Donald Wilson Patent Number: 5,887,070 Date Issued: 3/23/1999 Description: A canal-type headphone with acoustic damping to compensate for the loss of external ear resonance and an electronic filter to extend the high frequency response. This patent is for the Etymotic Canalphones. Miscellaneous Title: Device Of The Dummy Head Type For Recording Sound Inventor: Josee M. van den Berg Patent Number: 5,583,942 Date Issued: 12/10/1996 Description: A dummy head construction with an "open organ pipe" channel simulating the auditory meatus. Title: Process For Forming An Acoustic Monitoring Device Inventor: Hugo Zuccarelli Patent Number: 4,680,856 Date Issued: 7/21/1987 Description: A dummy head construction that is anatomically faithful to the human head. Title: Earphone Mountings in Safety Helmets for Motorcycle Riders Inventor: Richard J. Von Statton, Jr. Patent Number: 4,109,105 Date Issued: 8/22/1978 Description: A motorcycle helmet with stereo headphones that are built into the lining of helmet. Questions or comments? Visit the HeadWize Discussion Forums.
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