Kenneth L Kantor

US Patent:

20040091120, May 13, 2004

Filed:

Nov 12, 2002

Appl. No.:

10/293909

Inventors:

Kenneth Kantor - Benicia CA, US
Andrew Unruh - San Jose CA, US

International Classification:

H03G003/00
H03G005/00
H03G009/00

US Classification:

381/061000, 381/098000, 381/102000

Abstract:

Acoustical characteristics of rooms or other environments in which audio systems operate may be improved by equalization derived from measures of relative acoustic energy storage of the audio system such as a Relative Acoustic-energy Decay Spectrum (RADS). A RADS may be calculated from a measure of absolute energy storage such as RT60 values obtained from models or measurements of the audio system, and normalized with respect to a measure of acoustic energy storage of a reference system.

US Patent:

20080075319, Mar 27, 2008

Filed:

Jun 3, 2005

Appl. No.:

11/628395

Inventors:

Kenneth Kantor - Berkeley CA, US
Ioannis Kanellakopoulos - Cupertino CA, US
Alireza Jabbari - Berkeley CA, US

Assignee:

Tymphany Corporation - Cupertino CA

International Classification:

H04R 9/06
H04R 11/02
H04R 1/00

US Classification:

381420000, 381412000

Abstract:

An improved electrodynamic acoustic transducer eliminates or reduces the need for flexible or elastic materials to suspend an internal magnetic element by using both static and dynamic signal-dependent magnetic fields to control its movement. In one implementation, the transducer has a magnet that moves within a surrounding tube. This tube in turn supports one or more electromagnetic coils that generate a dynamic signal-dependent magnetic field that causes the internal magnetic element to vibrate. The surrounding tube also supports one or more magnets whose location on the tube is fixed and whose magnetic fields provide appropriate restoring forces acting on the internal magnetic element. These fixed magnets may be replaced or supplemented by ferromagnetic materials. This transducer may provide sound and infrasonic vibration by coupling the internal magnetic element to other radiating elements or by being placed in close proximity to or in actual contact with the pinna or meatus of the human ear when used in headphones or earphones, for example, and it also may provide sound through the direct vibration of the air in contact with the surface of the internal magnetic element. When direct atmospheric coupling is not required, the transducer may be assembled in a sealed enclosure.

US Patent:

20090190791, Jul 30, 2009

Filed:

Jun 3, 2005

Appl. No.:

11/628394

Inventors:

Andrew David Unruh - San Jose CA, US
Robert J. True - Pleasant Prairie WI, US
Edward T. Norcott Jr. - Los Gatos CA, US
Jens-Peter Axelsson - Benicia CA, US
Alireza Jabbari - Berkeley CA, US
David J. Prince - Villa Park IL, US
Kenneth L. Kantor - Berkeley CA, US
Ioannis Kanellakopoulos - Cupertino CA, US
Shaolin Wei - San Diego CA, US

Assignee:

Tymphany Corporation - Cupertino CA

International Classification:

H04R 1/00

US Classification:

381398

Abstract:

An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.

US Patent:

59526190, Sep 14, 1999

Filed:

Oct 30, 1998

Appl. No.:

9/183747

Inventors:

Kenneth Kantor - Benicia CA
William Bush - Benicia CA
Jay Doherty - Benicia CA

Assignee:

Recoton Corporation - Lake Mary FL

International Classification:

H05K 500

US Classification:

181150

Abstract:

An in-ceiling loudspeaker is provided which comprises a woofer and at least three tweeters located below the woofer with respect to the ceiling with the woofer and tweeters arranged to radiate direct acoustic signals downwardly and widely spread from the loudspeaker, the three tweeters mounted at acute angles with respect to the horizontal plane which is parallel to the ceiling, the acute angle preferably being approximately 65. degree. The three tweeters are regularly spaced equally at 120. degree. from each other between the axis of the tweeter and the plane of the ceiling.

US Patent:

20150036867, Feb 5, 2015

Filed:

Oct 21, 2014

Appl. No.:

14/519416

Inventors:

- Wanchai, HK
Robert J. TRUE - Pleasant Prairie WI, US
Jens-Peter AXELSSON - Benicia CA, US
Alireza JABBARI - Berkeley CA, US
David J. PRINCE - Villa Park IL, US
Kenneth L. KANTOR - Berkeley CA, US
Ioannis KANELLAKOPOULOS - Cupertino CA, US
Shaolin WEI - San Diego CA, US

International Classification:

H04R 7/16
H04R 7/26

US Classification:

381398

Abstract:

An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.

US Patent:

20150036868, Feb 5, 2015

Filed:

Oct 21, 2014

Appl. No.:

14/519429

Inventors:

- WANCHAI, HK
Robert J. TRUE - Pleasant Prairie WI, US
Jens-Peter AXELSSON - Benicia CA, US
Alireza JABBARI - Berkeley CA, US
David J. PRINCE - Villa Park IL, US
Kenneth L. KANTOR - Berkeley CA, US
Ioannis KANELLAKOPOULOS - Cupertino CA, US
Shaolin WEI - San Diego CA, US

International Classification:

H04R 7/16

US Classification:

381398

Abstract:

An acoustic transducer includes a housing, a plurality of diaphragms suspended from the housing and separated into one or more groups, and one or more motors combined with the housing that operate in response to an electrical signal. The diaphragms of each group are driven by a respective motor to which all the diaphragms in the group are coupled and at least one motor has an indirect coupling with no direct mechanical connection to the diaphragms driven thereby. One or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers.