AbstractA device for generating a waveform of a musical tone, which comprises a waveform data memory for storing data representing the waveforms of a plurality of musical tones, a waveform data selector for selecting any combination of more than two waveform data stored in the waveform data memory, a sound emission instructing unit for issuing an instruction for emitting a musical tone, a waveform
data reading unit for reading out the waveform data selected by the waveform data selector from the waveform data memory in a reading step of a processing program common to the musical tones, in response to an instruction issued by the sound emission instructing unit by effecting a time sharing processing, and a synthesizing unit for accumulating and synthesizing the waveform data read
out by the waveform data reading unit.ClaimsI claim:
1. A device for generating a waveform of a combined musical tone, comprising:
single waveform data and musical program storing means for storing waveform data of a plurality of musical tones and for storing a musical processing program for processing musical data to generate and radiate musical sounds;
sound emission instructing means, including a plurality of sound emission instructors, for issuing instructions for emitting musical tones;
assignment storing means, for storing musical tone data for at least two musical tones of said plurality of musical tones of waveform data stored in said single waveform data and musical program storing means in response to a single instruction issued by said sound emission instructing means, according to the musical processing program stored in said single waveform data and musical program storing means;
musical tone channel means, including a plurality of musical tone channels of a number less than a number of said plurality of sound emission instructors and equal to a maximum number of musical tones which can be sounded simultaneously;
channel assigning means for assigning said at
least two musical tones to said musical tone channel means according to the musical tone data stored in said assignment storing means;
waveform data reading means for reading out waveform data of said at least two musical tones assigned to said musical tone channel means by said channel assigning means, from said single waveform data and musical program storing means, utilizing a time share process, said waveform data reading means being included in a tone generated means; and
synthesizing means for accumulating and synthesizing the waveform data of said at least two musical tones read out by said waveform data reading means utilizing a time share process in order to generate the waveform of the combined musical tone,
such that storage addresses of said waveform data and said musical processing program in said single waveform data and musical program storing means are accessed at respective different times.
2. A device for generating a waveform of a combined musical tone, comprising:
single waveform data and musical program storing means for storing waveform data of a plurality of musical tones and for storing a musical
processing program for processing musical data to generate and radiate musical sounds;
musical tone selecting means for selecting at least two musical tones of said plurality of musical tones of waveform data stored in said single waveform data and musical program storing means;
sound emission instructing means, including a plurality of sound emission instructors, for issuing instructions for emitting musical tones;
musical
tone channel means, including a plurality of musical tone channels of a number less than a number of said plurality of sound emission instructors and equal to a maximum number of musical tones which can be sounded simultaneously;
channel assigning means for assigning said at least two musical tones selected by said musical tone selecting means to said musical to
