Polytonal automatic accompaniment apparatus

Abstract

An automatic accompaniment apparatus includes an accompaniment pattern generation unit for generating a plurality of accompaniment patterns which represent timing of generation of a plurality of accompaniment tones to be generated respectively. The accompaniment patterns correspond to accompaniment tones. The apparatus also includes a tone input unit for inputting the accompaniment tones to be generated and for changing the accompaniment tones into a plurality of tone date respectively, a first memory, second memory having a plurality of storage locations corresponding to the accompaniment patterns respectively, a writing unit for writing sequentially the tone data in the first memory and for writing a plurality of area information identifying respectively storage areas of the first memory in which the tone data are stored, into corresponding ones of the storage locations, and a reading out unit for reading out the area information from the storage locations corresponding to the accompaniment patterns and for reading out the tone data from the storage area identified by the area information read out. The accompaniment tones can be produced in accordance with the tone data read out.

Dependencies are inferred from the claim text.