12月22日的Roll Player Piano应用程序分析

Features -Rotating finger gestures on the screen to play music. -The music can be played according to the conducting motion of the index finger captured by the front camera*. -The music can be played accordance to the movement of the rotating circle captured by the rear camera*. -The tempo of the performance can be controlled by the speed of rotation. -The volume of the performance can be controlled by the size of the rotation radius. -You can also play at the volume according to the score. -You can record your performance. -57 different sound sources can be switched. -The equalizer allows independent adjustment of the volume of the low, mid, and high frequencies. -MIDI files can be imported**. -You can enjoy automatic performance. -You can bring multiple iPhones to enjoy ensemble playing. -You can practice ensembles with just one iPhone. -You can play hand-cranked music by reading roll sheet socre with the camera*. -You can play hand-cranked music by reading the rotating circle with the camera*. -You can print roll music score for hand-cranked music box (40mm/70mm width) as PDF file*. -You can print music score for disc-type hand-cranked music boxes as a PDF file*. * In-app purchase ($0.99) will add more functions.  ** In-app purchase ($3.99) will add more functions.