Bruce S Lavoie

US Patent:

20010038702, Nov 8, 2001

Filed:

Apr 20, 2001

Appl. No.:

09/839485

Inventors:

Bruce Lavoie - Shrewsbury MA, US
William Michalson - Charlton MA, US

International Classification:

H04R005/02

US Classification:

381/307000

Abstract:

A multi-channel surround sound system and method is described that allows automatic and independent calibration and adjustment of the frequency, amplitude and time response of each channel of the surround sound system. The disclosed auto-calibrating surround sound (ACSS) system includes a processor that generates a test signal represented by a temporal maximum length sequence (MLS) and supplies the test signal as part of an electric input signal to a loudspeaker. A microphone coupled to the processor receives the signal in a listening environment. The processor correlates the received sound signal with the test signal in the time domain and determines from the correlated signals a whitened response of the audio channel in the listening environment.

US Patent:

20070188308, Aug 16, 2007

Filed:

Feb 14, 2006

Appl. No.:

11/353646

Inventors:

Bruce Lavoie - Cambridge MA, US

International Classification:

B60Q 1/00
H03G 3/20

US Classification:

340425500, 381057000

Abstract:

A vehicle audio system including an assessor to assess the acoustic energy impacting the operator of the vehicle, and indicator audio signal source and an indicator audio controller to determine modifications to the indicator audio signal with respect to the assessment of the acoustic energy.