Arbitrary signal insertion method and arbitrary signal insertion system

An arbitrary signal insertion system for inserting a transmittable arbitrary signal having a predetermined frequency into an acoustic sound at a desired insertion timing, comprising:

• an arithmetic unit which stores the insertion timing in association with a predetermined time code together with a preset first rhythm;
• a start command section for commanding the arithmetic unit to start performance;
• a real-time performance unit for outputting an acoustic sound composed of a second rhythm actually performed by a player;
• a rhythm transmitter for emitting rhythm information of the acoustic sound to the player of the real-time performance unit;
• and
• a peripheral device which receives the arbitrary signal inserted in the acoustic sound output from the real-time performance unit and is operated and controlled by insertion information included in the arbitrary signal, wherein
• the arithmetic unit outputs the first rhythm to the rhythm transmitter and, at the same time, outputs the arbitrary signal to the real-time performance unit at the insertion timing associated with the first rhythm.

An arbitrary signal insertion system for inserting a transmittable arbitrary signal having a predetermined frequency into an acoustic sound at a desired insertion timing, comprising:

• an arithmetic unit which stores the insertion timing in association with a predetermined time code together with a preset first rhythm;
• a real-time performance unit for outputting an acoustic sound composed of a second rhythm actually performed by a player;
• and
• a peripheral device which receives the arbitrary signal inserted in the acoustic sound output from the real-time performance unit and is operated and controlled by insertion information included in the arbitrary signal;
• wherein
• the real-time performance unit has means for transmitting second rhythm information generated by actual performance to the arithmetic unit, and
• the arithmetic unit confirms that the second rhythm input from the real-time performance unit is synchronized with the first rhythm, and then outputs the arbitrary signal to the real-time performance unit at the insertion timing associated with the first rhythm,
• wherein the synchronization is confirmed by comparing the second rhythm included in MIDI data related to the actually played acoustic sound with the first rhythm included in the MIDI data related to musical score information of a prerecorded acoustic sound.