System for analyzing sound quality in automobile using musical intervals
US5535131A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 22, 1995 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Aug 22, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.