System for analyzing sound quality in automobile using musical i

Details System for analyzing sound quality in automobile using musical i System for analyzing sound quality in automobile using musical i

1995-08-22

1996-07-09

Trammell, James P.

Boots, shoes, and leggings

364574, 364485, G01R 2316

Patent

active

055351310

ABSTRACT:
A computer-implemented system for analyzing sound quality in automobiles includes a noise spectrum generator that generates an actual or synthetic noise spectrum representative of the noise of an automobile. A computer receives the spectrum and converts frequency peaks to corresponding frequency orders, relative to a fundamental frequency, e.g., the RPM of the automobile's engine. Then, each order and/or the difference between the order and one or more comparison orders is determined and correlated to a corresponding musical interval. Each interval is assigned a cacophony factor, based upon its agreeability to the human ear, and the cacophony factor is multiplied by the amplitude (SPL) of the order to generate a cacophony measure which represents the sound quality of the noise spectrum.

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