MUSICAL PERFORMANCE ANALYSIS METHOD AND MUSICAL PERFORMANCE ANALYSIS DEVICE

摘要

Provided is an information processing device 11 that can quickly and easily correct a playing position to the appropriate position. The information processing device 11 is equipped with an estimation unit 41 that sequentially estimates playing positions Px in a musical piece by analyzing an acoustic signal Z representing the played sounds of the musical piece, and a control unit 43 that sets the playing position P in the musical piece at a first time point on a time axis to a playing position Py that corresponds to a time series of the playing positions Px estimated by analysis for a selected period before the first time point and separated from the first time point.