RHYTHMIC INTERPOLATORS

A system for development of rhythmic patterns in which repetitive ramp wave forms are developed, the repetition rate of which is controlled, pulses being developed by sampling the ramp wave forms at predetermined levels, certain of the pulses being selected by means of a matrix to form each required pattern. The minima and maxima of the ramps are maintained at fixed levels and the slopes of the ramps are conformed to the desired repetition rates in accordance with the tempo of a player controlled instrument, such as an electric organ. Provision is made for extending rhythm patterns over two measures, each different from the other, for inserting additional beats near the end of each fourth measure of a piece of music, provision of visual tempo indication, and provision of a cutoff for instant abortion of the presently played measure, allowing rapid changes of tempo.