STRIKING SPEED ESTIMATING DEVICE FOR KEYBOARD MUSICAL INSTRUMENT AND AUTOMATIC PLAYING PIANO EQUIPPED WITH SAME

摘要

PURPOSE:To provide an existing piano with an automatic playing function by generating information regarding the key speed of a part specified by a speed detection position specifying means according to information regarding the lows of a key, and estimating a speed given to a hammer according to the specific key speed information. CONSTITUTION:When the key 1 is pressed, the key 1 moves at a speed corresponding to the given force while drawing a locus corresponding to the keying and a sensor 11 detects the locus of the key 1 to generate the information regarding the locus. Then a speed detection position specifying means 13 specifies the part whose speed is detected according to the information regarding the locus of the key 1. Thus, the part of the locus of the key 1 where the motion speed of the hammer 5 is reflected is specified, and then a speed information generating means 15 generates information regarding the key speed according to the information regarding the locus of the key 1. The motion speed of the hammer 5 corresponds to a string-striking speed, so a string-striking speed estimating means 17 estimates the string-striking speed given to the hammer 5. Consequently, the existing piano is easily provided with the automatic playing function.