Apparatus for determining tonal characteristics of an object and method thereof
US5390248A · kind A · utility
5Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jan 15, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H3/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is provided for evaluating the tonal characteristics of an object with respect to a nominal tone which comprises a striker for causing the object to generate an audio signal and a microphone for inputting the audio signal. A reference signal generator generates plural reference signals in accordance with the nominal tone, and those signals are mixed with the audio signal by a mixing circuit. The accuracy of the audio signal with respect to the nominal tone is evaluated in accordance with the audio signal mixed by the mixing circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.