Joseph G Desloge

US Patent:

7564980, Jul 21, 2009

Filed:

Apr 21, 2005

Appl. No.:

11/111036

Inventors:

Patrick M. Zurek - Arlington MA, US
Joseph G. Desloge - Brookline MA, US

Assignee:

Sensimetrics Corporation - Somerville MA

International Classification:

H04R 25/00

US Classification:

381 60, 381314

Abstract:

An immersive hearing loss and auditory prostheses simulator allows a person who listens through the simulation system to experience an actual shift in his or her thresholds for detecting ambient sounds, in a way that is similar to the shift in thresholds experienced by a hearing-impaired person. The simulator shifts the listener's thresholds while also processing the input signals for suprathreshold stimulation. With a controlled degree of auditory threshold shift with loudness recruitment, a hearing loss simulator is made valid and flexible.

US Patent:

20060013409, Jan 19, 2006

Filed:

Jul 16, 2004

Appl. No.:

10/893188

Inventors:

Joseph Desloge - Brookline MA, US

Assignee:

Sensimetrics Corporation - Somerville MA

International Classification:

A61F 11/06
H04R 1/10

US Classification:

381072000, 381071600, 381074000

Abstract:

A hear-through hearing protective device includes at least two microphones, simulated-pinna filters, and a processing circuit. Elevation dependent directional cues are introduced by the processing performed by the simulated-pinna filters. Introduced directional cues are designed to allow the wearer to identify the source location of an acoustic signal.

US Patent:

7254199, Aug 7, 2007

Filed:

Sep 14, 1999

Appl. No.:

09/396175

Inventors:

Joseph G. Desloge - Brookline MA, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

H04B 1/10

US Classification:

375350

Abstract:

An adaptive multiple-tap frequency domain digital filter processes an input signal vector X from an plurality of spatially separated transducers that detect energy from a plurality of sources including a target energy source and at least one non-target energy source. The filter receives and processes the input signal vector X to attenuate noise from non-target sources and provides an output signal vector Y. Tap weights Wfor the filter are selected by first parameterizing each of the tap weights W, such that each of the tap weights Wis characterized by a vector of parameters , and the solving for each parameter of the vector by minimizing the expected power of the array output signal Y. A robustness-control transformation is then applied to the vector p to provide a robust vector wherein the robustness-control transformation identifies and reduces target canceling components of the vector while preserving non-target canceling components. Finally, the weight vector indicative of the filter tap weights is formed as a function of the vector. Notably, the present invention separates the robustness constraining process from the beamforming power minimization, in contrast to prior art techniques which combine the robustness constraint into the beamforming power minimization.