Electronic musical instrument

Claim 1

An electronic musical instrument, comprising: a single key board having a plurality of performance keys; means coupled to said single keyboard for detecting a single operated performance key to generate a key code data corresponding thereto; musical sound generating means including a plurality of tone generating channels, each channel for producing a musical tone signal, said channels being switchable on the basis of a time division process whereby said musical sound generating means can simultaneously produce a plurality of musical tone signals; channel assigning means coupled to said musical sound generating means for assigning the respective tone generating channels to a musical note to be produced in response to said generated key code data corresponding to said single detected operated performance key, said channel assigning means assigned at least two of said tone generating channels to the same note to be produced responsive to operation of a single performance key of said single keyboard; said musical sound generating means including a memory for assigning a musical note to respective time division tone generating channels, said memory having memory areas which correspond in number to the number of said tone generating channels, and said channel assigning means being operative to assign at least two of said memory areas to the same note to be produced in accordance with a relationship between the memory areas and the tone generating channels; control means coupled to said musical sound generating means and to said channel assigning means for controlling at least two tone generating channels assigned to the same musical tone so as to produce different musical sound wave signals corresponding to the same note in each of said at least two tone generating channels, whereby an ensemble performance of at least two sounds are carried out responsive to inputting of a single key code data by said keyboard.