Digital arpeggio system
US4156379A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1977 |
| Grant date | May 29, 1979 |
| Priority date | — |
| Expiry date | Jun 21, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S84/22
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Disclosed is a digital arpeggio system for an electronic organ that through the use of digital techniques permits arpeggios, note sequences as well as strum, multi, organ, and normal modes of operation to be played automatically. Two counters scan by counting through an 8.times.8 matrix of 64 words covering the 61 notes of an organ in rapid sequence upon the playing of one or more organ keys. Each word is fed to a corresponding one of 61 decoders, one for each note of the keyboard. If a corresponding key has been played, the decoder provides a signal to a corresponding pulser circuit which enables a corresponding keyer to transmit an audio signal from an audio oscillator corresponding to the played key to an output system and loudspeaker. The two counters are stopped by a clock control while the note is sounded and then the counters are enabled by the counter control to continue counting through the matrix until the next actuated key is located. The two counters can be controlled to count up only, or up and down so that both an up and an up-down arpeggio can be sounded. A sequence control is also provided so that the sequence of the sounding of the played notes can be varied by cha…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.