| 摘要 |
PURPOSE:To obtain a musical instrument playing device with a simple circuit constitution, by decoding a key address sequentially outputted based on a music recording, and operating a key designated via a corresponding solenoid-drive circuit. CONSTITUTION:In operating a start switch of an operation section 4 of a data output circuit 3, the 1st playing data in response to a musical recording of a storage section 2 is read out, a corresponding address is applied to a decoder 7 from a control circuit 5, and a designated solenoid driving circuit 9 is made to enable state. A load signal LD and solenoid driving information SKD based of keying strength information are applied to a latch of the circuit 9 from the control circuit 5 at the same time and a key operation solenoid 1 is set on via a driving signal generating circuit 11 during the consecution time of a playing data counted at the circuit 5. Similarly, the key 1 is sequentially operated in response to the musical recording, to attain a musical instrument automatic playing device with simple circuit constitution for key designation depending on the key designated with an address. |
