1. A rhythm creating system comprising: an input means for entering a plurality of parameters specifying the genre and meter of the rhythm to be created; a memory for storing a rule data base for associating the parameters with rhythm patterns including a LEVEL rule specifying complexity of the desired pattern, and a LENGTH rule specifying a number of bars of a rhythm pattern to be created; and a rhythm pattern creating means for creating desired rhythm patterns by an inference system with reference to the rule data base on the basis of the plurality of parameters entered by the input means.
1. A rhythm creating system comprising: an input means for entering a plurality of parameters specifying the genre and meter of the rhythm to be created; a memory for storing a rule data base for associating the parameters with rhythm patterns including a LEVEL rule specifying complexity of the desired pattern, and a LENGTH rule specifying a number of bars of a rhythm pattern to be created; and a rhythm pattern creating means for creating desired rhythm patterns by an inference system with reference to the rule data base on the basis of the plurality of parameters entered by the input means. 2. A rhythm creating system according to claim 1 wherein said memory stores rules comprising an IDEA rule specifying the instrumentation of musical instruments to be used in the rhythm pattern, a METER rule specifying a number of beats of one bar of the rhythm pattern, a Ptn rule specifying the type of use to be made for the desired rhythm pattern, and a genre of rhythm patterns to be created.