Electronic musical instrument capable of assigning waveform samples to divided partial tone ranges

An electronic musical instrument comprising:

• a memory for storing data representative of a plurality of waveform samples;
• a selector for selecting a predetermined number of waveform samples from said plurality of waveform samples stored in said memory;
• a circuit for generating pitch information representative of a pitch within a predetermined tone range;
• a circuit for instructing an automatic assignment of waveform samples in response to a user input;
• a circuit for assigning responsive to said automatic assignment from said circuit for instructing, for setting a plurality of partial tone ranges equal in number to said predetermined number, within said predetermined tone range, and for assigning each of said waveform samples selected by said selector to a corresponding partial tone range;
• and
• a tone generator responsive to said pitch information from said pitch information generating circuit, for associating a partial tone range to said pitch information, for retrieving data representative of a waveform sample assigned to said associated partial tone range from said memory, and for generating a musical tone based on said data representative of the waveform sample retrieved from said memory.