Patent ID: 7060886

Claim:
A music playback unit comprising: a first memory for storing musical score data; a second memory for storing correction data for correcting said musical score data for each velocity of each note; a correction section for correcting the velocity of said musical score data read from said first memory using said correction data read from said second memory; and a playback section for loading said corrected musical score data after correction by said correction section and playing sound according to said corrected musical score data, wherein after acoustic power of each velocity is measured for each note, each measurement result is respectively standardized using a specified velocity of a specified note, and the standardized acoustic power is stored in said second memory as said correction data, and wherein said correction section corrects each velocity of said musical score data using calculation results determined by the following formula: Vrev = V 2 V0 · S ⁡ ( n , V ) - 1 4 , wherein S(n,V) is correction data, n is note power, V is velocity, VO is specified velocity, and Vrev is corrected velocity.