Performance data transmission control method, storage medium, electronic device and electronic musical instrument

A non-transitory computer-readable storage medium storing a program executable by one or more processors, the program causing the one or more processors to perform the following:

• receiving performance data associated with output timings, the performance data including continuously varying operation data whose value changes continuously;
• detecting characteristic points of change from the continuously varying operation data;
• thinning out the continuously varying operation data other than the characteristic points of the change;
• and
• generating unit performance data to be transmitted to an external device, based on the performance data in which the characteristic points in the continuously varying operation data have been detected and in which the continuously varying operation data other than the characteristic points have been thinned out.

An electronic device, comprising:

• a transmission unit;
• and
• at least one processor configured to perform the following:
• receiving performance data associated with output timings, the performance data including continuously varying operation data whose value changes continuously;
• detecting characteristic points of change from the continuously varying operation data;
• thinning out the continuously varying operation data other than the characteristic points of the change;
• and
• generating unit performance data to be transmitted through by the transmission unit to an external device, based on the performance data in which the characteristic points in the continuously varying operation data have been detected and in which the continuously varying operation data other than the characteristic points have been thinned out.