Abstract: A MIDI data transmitter/receiver for a MIDI instrument device which delivers MIDI data for transmitting performance information received/transmits a radio signal modulated by the MIDI data by a transmitter/receiver block connected to the MIDI instrument. The MIDI data transmitter/receiver includes a lock-type setting switch for setting initial operating conditions of the transmitter/receiver block. The control block controls the transmitter/receiver block based on the initial operating conditions set by the lock-type setting switch, when the power is turned on. In another form of the invention, data indicative of operating conditions set by the control block is stored in an electrically rewritable memory, and the control block controls the transmitter/receiver block based on the initial operating conditions set based on data of newest operating conditions stored in the memory, when the power is turned on. Other forms of the invention are also provided.

Abstract: A MIDI transmitter receives a MIDI signal from a MIDI instrument device connected thereto, modulates the MIDI signal into a radio signal, and transmits the radio signal. A MIDI receiver receives a radio signal prepared based on a MIDI signal, from a MIDI instrument device separate therefrom, demodulates the radio signal into the MIDI signal, and delivers the resulting MIDI signal to another MIDI instrument device connected thereto. A MIDI signal transmitter/receiver includes a transmitter block for receiving and modulating a MIDI signal from a MIDI instrument device connected thereto into a radio signal and transmitting the radio signal, a receiver block for receiving and demodulating a radio signal prepared based on a MIDI signal from the MIDI instrument device separate therefrom, and delivering the resulting signal to a MIDI instrument device connected thereto, and a reception/transmission changeover block for selectively permitting one of the transmitter block and the receiver block to operate.

Abstract: An automatic performing system includes a performance information transmitting unit and a performance information receiving unit. Performance information is transmitted from the performance information transmitting unit to the performance information receiving unit. The transmitting unit waits for returned performance information from the receiving unit and compares the returned information with the transmitted information. If the returned information is determined to be unequal to the transmitted information, a retransmission command is transmitted to the receiving unit, thereby prohibiting the receiving unit from using incorrectly received performance information and ordering the receiving unit to wait for the next transmission from the transmitting unit. Thus, correctly received performance information is processed on a real time basis.

Abstract: According to the invention, elapsed time data indicative of a lapse of time are converted to greater values for permitting automatic performance according to the converted time data. Thus, it is made necessary, during fast forward of an automatic performance, only to convert the elapsed time data or time information of automatic performance information. In addition, the elapsed time data are converted into data, the value of which is reduced progressively with the lapse of time at a rate greater than the rate of change in the elapsed time data, for permitting automatic performance according to this data. Thus, it is made necessary, during rewind of an automatic performance, only to convert the elapsed time data or the time information of automatic performance information.

Abstract: Disclosed is an apparatus for automatic playing of a musical instrument. This apparatus has holding means for holding pedal play information that is included in play information that is read from storage means. During a fast forward or a fast reverse operation, the apparatus for automatic playing of a musical instrument holds in the holding means the most recent history of pedal play information, and when the operation is released, and in advance of the execution of play information for keys, the apparatus drives a pedal terminal in consonance with the retained pedal play information, and then reproduces music.

Abstract: A sensor arrangement for an automatic piano player apparatus is provided. The sensor arrangement includes a plurality of switches which are operatively associated with a rotatable shutter in the hammer system of the automatic piano player. When the hammer system is operated to strike a string of the piano, the cooperation between the rotatable shutter and the switches produces output information which includes the string-striking intensity information and the state of condition information of the damper that is normally in contact with the piano string. With this information, the various play techniques such as staccato, legato, continuous key-striking and the like may be reproduced with great fidelity by the automatic piano player apparatus.