System and method for recording user performance of keyboard instrument

A system for generating a music file for recording user performance in a strike simulation mode of a keyboard instrument, comprising:

• at least one processor;
• and
• storage for storing instructions, the instructions, when executed by the at least one processor, causing the system to perform a method including:
• detecting, by a sensor, an event indicating a status change of an execution device of the keyboard instrument,
• wherein the execution device includes a weight lever, which is a concrete structure in the keyboard instrument, and the event includes the weight lever striking on an elastic structure to simulate a rebound force generated by hammer striking on string;
• wherein the execution device includes a plurality of weight levers which are concrete structures in the keyboard instrument and weights of the weight levers decrease from a bass zone to a treble zone, and
• a plurality of elastic structures, wherein a strike on an elastic structure simulates a real rebound feel,
• wherein the event includes the a first weight lever of the plurality of weight levers striking on a first elastic structure of the plurality of elastic structures to simulate a real rebound force generated by hammer striking on string and a rebound force is transmitted to a key associated with the first weight lever and cause a user to feel the real rebound force;
• generating, by the sensor, a signal corresponding to the detected event;
• preprocessing, by a signal processing circuit, the signal by analog-to-digital converting and at least one of amplifying, frequency-selecting, smoothing, peak holding, or channel selecting;
• receiving, by the at least one processor, the signal after preprocessing;
• and
• generating, by the at least one processor, a music file based on the signal.