Resources Contact Us Home
Electronic organ with multi-pitch note generators

Image Number 7 for United States Patent #4038896.

An organ is described in which a small number of note generators, each comprising a binary divider, a group of keyers, and an envelope generator, serves an entire keyboard. Each note generator is selectively operable by multiplexed signals from a keyboard to produce either of two adjacent notes in any octave interval. Six of these note generators are provided for each manual of a spinet size organ. A seventh note generator, which is selectively operable to produce any of the notes available from the other six, is provided together with selection circuitry which causes the seventh note generator to augment any one of the other six which is called upon to produce two adjacent, or two octavely related, notes simultaneously. The pitch of all notes is determined by a set of top octave dividers which drive the binary dividers individual to each note generator. Synchronizing circuitry is provided to control the phase relation between binary dividers, when they are driven by a common source, to avoid cancellation effects.

  Recently Added Patents
Data switch with shared port buffers
Box for a package
Lane-marker recognition system with improved recognition-performance
Biologic replacement for fibrin clot
Memory module and method of manufacturing a memory module
Lettuce line RS 16890990
Maintenance apparatus having rotatable wiper for printhead
  Randomly Featured Patents
Formulation and process for the preparation of modafinil
Multimedia information arranging apparatus and arranging method
Apparatus for washing and drying food products
Outer membrane protein of Ehrlichia canis and Ehrlichia chaffeensis
Mask used in charged particle beam projecting apparatus
Scoring rule
Motor vehicle roof with at least two raisable and movable rigid cover elements
Methods and systems for data moving using locks
Charge-coupled-device based transmitters and receivers
Beam-forming network