Daniel T Warren

US Patent:

7065220, Jun 20, 2006

Filed:

Sep 28, 2001

Appl. No.:

09/966873

Inventors:

Daniel Max Warren - Geneva IL, US
Stephen C. Thompson - Naperville IL, US

Assignee:

Knowles Electronics, Inc. - Itasca IL

International Classification:

H04R 3/00

US Classification:

381 92

Abstract:

A directional microphone system is disclosed, which comprises circuitry for low pass filtering a first order signal, and circuitry for high pass filtering a second order signal. The system further comprises circuitry for summing the low pass filtered first order signal and the high pass filtered second order signal. A method of determining whether a plurality of microphones have sufficiently matched frequency response characteristics to be used in a multi-order directional microphone array is also disclosed. For a microphone array having at least three microphones, wherein one of the microphones is disposed between the other of the microphones, a method of determining the arrangement of the microphones in the array is also disclosed.

US Patent:

7103196, Sep 5, 2006

Filed:

Mar 12, 2002

Appl. No.:

10/095819

Inventors:

Daniel Max Warren - Geneva IL, US

Assignee:

Knowles Electronics, LLC. - Itasca IL

International Classification:

H04R 25/00

US Classification:

381429

Abstract:

A receiver, such as for use in a hearing aid, is disclosed. The receiver comprises a housing and a diaphragm assembly disposed within the housing. The diaphragm assembly acoustically divides the housing into a front volume and a back volume. The diaphragm assembly comprises a paddle having a perimeter, a flexible annulus connected to the paddle, and a diaphragm support, wherein the diaphragm support secures the perimeter of the annulus to the housing. The receiver further comprises a plurality of apertures in the diaphragm assembly, wherein the plurality of apertures provides an acoustic distortion of no greater than 2% THD.

US Patent:

7236609, Jun 26, 2007

Filed:

Oct 6, 2000

Appl. No.:

10/089861

Inventors:

Paris Tsangaris - Itasca IL, US
Thomas E. Longwell - Phoenix AZ, US
Thomas E. Miller - Arlington Heights IL, US
Dennis Ray Kirchhoefer - Plainfield IL, US
Daniel M. Warren - Geneva IL, US

Assignee:

Knowles Electronics, LLC. - Itasca IL

International Classification:

H04R 25/00

US Classification:

381417, 381418, 381412

Abstract:

A transducer comprising a pair of spaced magnets at least partially forming a tunnel having a central axis. A coil having a first and a second side wall and an upper and a lower wall at least partially forms the tunnel. A reed having a central portion extends through the tunnel. The reed has a stationary end, a deflection end, and a tip portion which lies at least partially between the magnets, wherein the reed is mounted for deflection towards or away from the respective magnets.

US Patent:

7336797, Feb 26, 2008

Filed:

May 10, 2004

Appl. No.:

10/842654

Inventors:

Stephen C. Thompson - Naperville IL, US
David E. Schafer - Glen Ellyn IL, US
Daniel M. Warren - Geneva IL, US

Assignee:

Knowles Electronics, LLC. - Itasca IL

International Classification:

H04R 11/02

US Classification:

381418, 381417, 381324

Abstract:

A receiver assembly includes a housing having a fixed housing portion and a shiftable housing portion cooperating to define a hollow cavity. A flexible membrane secured between the fixed housing portion and the shiftable housing portion and adapted to allow relative motion between the fixed and shiftable housing portions. The receiver assembly further includes a magnetic motor assembly including a displaceable drive rod; and a link assembly having a first end fixedly attached to an inner surface of the shiftable housing and a second end coupled to the drive rod. The link assembly translates the shiftable housing portion relative to the fixed housing portion in response to the displacement of the drive rod.

US Patent:

D573588, Jul 22, 2008

Filed:

Oct 26, 2006

Appl. No.:

29/267979

Inventors:

Daniel Max Warren - Geneva IL, US
Matthew Mial Mason - Algonquin IL, US
Clifford Ryan Grounds - Plainfield IL, US
Thomas Joschika - Sleepy Hollow IL, US

Assignee:

Knowles Electronic, LLC - Itasca IL

International Classification:

1401

US Classification:

D14225

US Patent:

7415125, Aug 19, 2008

Filed:

May 10, 2004

Appl. No.:

10/842663

Inventors:

Daniel M. Warren - Geneva IL, US
Stephen C. Thompson - Naperville IL, US
David E. Schafer - Glen Ellyn IL, US

Assignee:

Knowles Electronics, LLC - Itasca IL

International Classification:

H04R 11/02
H04R 25/00

US Classification:

381418, 381186

Abstract:

A receiver assembly includes a first diaphragm assembly having a diaphragm, and a second diaphragm assembly having a diaphragm. A linkage assembly is coupled to an armature of the receiver. The linkage assembly is also coupled to the first diaphragm assembly and to the second diaphragm assembly.

US Patent:

7443997, Oct 28, 2008

Filed:

Jan 30, 2004

Appl. No.:

10/769528

Inventors:

Thomas Miller - Arlington Heights IL, US
Daniel Warren - Geneva IL, US

Assignee:

Knowles Electronics, LLC. - Itasca IL

International Classification:

H04R 25/00

US Classification:

381417, 381418, 381322, 381324

Abstract:

An armature for a receiver comprising a first and a second leg portion each having a thickness and a width and connected to each other, and a connection portion in communication with the first and second leg portions. The connection portion has a width greater than the width of the first and second leg portions individually. The connection portion reduces the stiffness of the armature and minimizes magnetic reluctance of the connection between the first and second leg portions. According to one aspect of the invention, the first and second leg portions are integrally formed with the connection portion and the connection portion includes at least a portion having a thickness less than the thickness of the first and second leg portions individually to reduce the stiffness of the armature. According to another aspect of the invention, the first and second leg portions are separately formed and attached to the connection portion in a way that reduces the stiffness of the armature.

US Patent:

7471798, Dec 30, 2008

Filed:

Apr 28, 2003

Appl. No.:

10/424552

Inventors:

Daniel M. Warren - Geneva IL, US

Assignee:

Knowles Electronics, LLC - Itasca IL

International Classification:

H04R 3/00
H04R 1/02
H04R 25/00
G01S 3/80

US Classification:

381 92, 381 91, 381122, 381312, 381313, 381111, 367119, 367131, 367121

Abstract:

A directional microphone system is disclosed, which comprises circuitry for low pass filtering a first order signal, and circuitry for high pass filtering a second order signal. The system further comprises circuitry for summing the low pass filtered first order signal and the high pass filtered second order signal. A method of determining whether a plurality of microphones have sufficiently matched frequency response characteristics to be used in a multi-order directional microphone array is also disclosed. For a microphone array having at least three microphones, wherein one of the microphones is disposed between the other of the microphones, a method of determining the arrangement of the microphones in the array is also disclosed.