| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a playing data correction device not only quickly and accurately measuring positions of sensors, such as photo-sensors but also correcting performance information by results in which positions of hammer sensors are measured, thereby, recording and reproducing performance correctly. <P>SOLUTION: In the playing data correction device, times when a hammer 2 passes a sensor SE1 and a sensor SE2 are acquired, and inter-sensor distance between the sensor SE1 and the sensor SE2 is calculated by the acquired times and distance between the sensor SE1 and the sensor SE2 and a string contact time when the hammer 2 is made to be in contact with a string 4. Then, a time from the hammer 2 passing the sensor SE2 to the hammer 2 hitting the string is calculated by a string hitting velocity which is to be calculated by times when the hammer 2 passes the sensor SE1 and the sensor SE2 and the inter-sensor distance and the time when the hammer 2 passes the sensor SE2 and the inter-sensor distance, and a string hitting time is corrected by the calculated time. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
