Electronic musical instruments of the type synthesizing a plurality of partial tone signals

An electronic musical instrument comprising:

• means for producing a plurality of time window signals;
• means for producing a plurality of predetermined partial tone signals;
• first control means connected to said time window signal producing means for controlling a time width of each of said time window signals and assigning said time window signals to respective time divisioned time slots, second control means connected to said partial tone signal producing means for controlling the frequency of each of said partial tone signals and assigning said partial tone signals to respective said time divisioned time slots;
• modulating means for modulating said partial tone signals with said time window signals and producing modulated partial tone signals in said time divisioned time slots respectively;
• and
• synthesizing means connected to said modulating means for synthesizing said modulated partial tone signals and producing a musical tone signal.

An electronic musical instrument comprising a plurality of musical tone forming channels, each of which comprises:

• means for producing a plurality of time window signals;
• means for producing a plurality of predetermined partial tone signals;
• first control means connected to said time window signals producing means for controlling a time width of each of said time window signals and assigning said time window signals to respective time divisioned time slots;
• second control means connected to said partial tone signal producing means for determining the frequency of each of said partial tone signals and assigning said partial tone signals to respective said time divisioned time slots;
• modulating means for modulating said partial tone signals with said time window signals and producing modulated partial tone signals in said time divisioned time slots respectively;
• and
• synthesizing means connected to said modulating means for synthesizing said modulated partial tone signals on the time division basis, musical tones in respective said musical tone forming channels being different each other.