Electrical synthesis of mechanical bell
US4401975A · kind A · utility
11Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Nov 19, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Circuit means for synthesizing the sound of a mechanical bell by combining the three most significant frequencies of the bell to be synthesized and modulating these with a decaying exponential control signal which is derived from a clock signal having a pulse repetition rate equal to the stroke repetition rate of the bell being synthesized. The combined and modulated signal is amplified and coupled to suitable audio distribution means. Modulation of the exponential signal can provide a tremolo effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.