Eric J Freeman

US Patent:

8351629, Jan 8, 2013

Filed:

Feb 21, 2008

Appl. No.:

12/020978

Inventors:

Robert Preston Parker - Westborough MA, US
Eric J. Freeman - Sutton MA, US
Jeffrey J. Hoefler - Westwood MA, US

International Classification:

H04R 1/20

US Classification:

381338, 381337, 381339, 381341, 381345, 381351

Abstract:

A loudspeaker assembly, including an acoustic waveguide; an acoustic driver mounted in the waveguide so that a first surface radiates sound waves into the waveguide so that the sound waves are radiated from the waveguide; and an acoustic volume acoustically coupled to the acoustic waveguide for increasing the amplitude of the sound waves radiated from the acoustic waveguide.

US Patent:

8615097, Dec 24, 2013

Filed:

Sep 28, 2012

Appl. No.:

13/630319

Inventors:

Robert Preston Parker - Westborough MA, US
Eric J. Freeman - Sutton MA, US
Jeffrey J. Hoefler - Westwood MA, US

Assignee:

Bose Corportion - Framingham MA

International Classification:

H04R 25/00

US Classification:

381338, 381337, 381339, 381341

Abstract:

A loudspeaker assembly, including an acoustic waveguide; an acoustic driver mounted in the waveguide so that a first surface radiates sound waves into the waveguide so that the sound waves are radiated from the waveguide; and an acoustic volume acoustically coupled to the acoustic waveguide for increasing the amplitude of the sound waves radiated from the acoustic waveguide.

US Patent:

7269270, Sep 11, 2007

Filed:

Oct 17, 2002

Appl. No.:

10/272705

Inventors:

Eric J. Freeman - Worcester MA, US
Timothy Holl - Medway MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

H04R 25/00

US Classification:

381346, 381337, 381345, 381349, 381350, 381353

Abstract:

The frequency at which standing waves occur in a loudspeaker enclosure may be reduced by the addition of an internal barrier to the enclosure in order to lengthen the effective length of an internal dimension of the enclosure. Additionally, the internal barrier may be configured such that it forms a resistive coupling between two sides of the barrier. By configuring the internal barrier to form a resistive coupling, aberrations in the frequency response of the loudspeaker caused by certain standing waves may be dampened.

US Patent:

7995778, Aug 9, 2011

Filed:

Aug 4, 2006

Appl. No.:

11/462496

Inventors:

William Berardi - Grafton MA, US
Eric J. Freeman - Sutton MA, US
Michael W. Stark - Acton MA, US

Assignee:

Bose Corporation - Framingham MA

International Classification:

H04R 5/02

US Classification:

381310, 381 97, 381 98, 181125

Abstract:

A set of filters is configured to distribute input signals representing a single perceptual axis to first and second physically separate arrays of loudspeakers comprising at least first and second transducers, such that the arrays of loudspeakers will create an array pattern corresponding to the input signals when the input signals are between a first frequency and a second frequency.

US Patent:

20080031472, Feb 7, 2008

Filed:

Aug 4, 2006

Appl. No.:

11/499014

Inventors:

Eric J. Freeman - Sutton MA, US
Michael W. Stark - Acton MA, US
William Berardi - Grafton MA, US
Klaus Hartung - Hopkinton MA, US

International Classification:

H04R 1/02
H04R 1/40

US Classification:

381 89, 381 97

Abstract:

Electroacoustical apparatus includes at least first and second acoustically coupled electroacoustical drivers. An electrical network couples their inputs so that an electrical drive signal applied to one reduces the effect of acoustic coupling from that one to the other.

US Patent:

20120263325, Oct 18, 2012

Filed:

Apr 14, 2011

Appl. No.:

13/087002

Inventors:

Eric J. Freeman - Sutton MA, US
John Joyce - Canton MA, US

Assignee:

BOSE CORPORATION - Framingham MA

International Classification:

H03F 99/00
H04R 1/02

US Classification:

381120, 381387

Abstract:

An audio device incorporates a plurality of acoustic drivers and employs them to form either a first acoustic interference array generating destructive interference in a first direction from the plurality of acoustic drivers or a second acoustic interference array generating destructive interference in a second direction from the plurality of acoustic drivers in response to the orientation of the casing of the audio device relative to the direction of the force of gravity.

US Patent:

20120263335, Oct 18, 2012

Filed:

Apr 14, 2011

Appl. No.:

13/087023

Inventors:

John J. Breen - Southborough MA, US
Richard J. Carbone - Sterling MA, US
Eric J. Freeman - Sutton MA, US

International Classification:

H04R 1/02

US Classification:

381387

Abstract:

An audio device incorporates first acoustic driver at least partially overlain by a first acoustic reflector to define a first effective direction of maximum acoustic radiation and a second acoustic driver at least partially overlain by a second acoustic reflector to define a second effective direction of maximum acoustic radiation, wherein when the audio device is positioned in a room such that the direction of maximum acoustic radiation of the first acoustic driver is substantially perpendicular to the direction of the force of gravity, the first effective direction of maximum acoustic radiation is bent more towards a listening position at which a listener is expected to be located than the first direction of maximum acoustic radiation and away from a floor, and the second effective direction of maximum acoustic radiation is bent more towards the listening position than the second direction of maximum acoustic radiation and away from a wall.

US Patent:

20210014633, Jan 14, 2021

Filed:

Jul 12, 2019

Appl. No.:

16/510091

Inventors:

- Framingham MA, US
Eric John Freeman - Sutton MA, US

International Classification:

H04S 7/00
H04R 29/00
H04R 3/08
H04R 1/28

Abstract:

Various implementations include speaker systems. In a particular implementation, a speaker system includes: a first loudspeaker configured to drive at least one of a port or a passive radiator that is tuned at a first frequency; and a second loudspeaker configured to drive at least one of a port or a passive radiator that is tuned at a second frequency, the second frequency being higher than the first frequency, where the first loudspeaker is configured to output audio at the second frequency.