Abstract: A record and reproduction controlling device is connected to a hard disk memory via a bus. This controlling device receives from a computer information necessary for read/write operation, on the basis of which the controlling device performs its own process to write to or read from the hard disk. The record and reproduction controlling device temporarily stores tone data read out from the hard disk memory into a first buffer memory and then transfers the tone data from the first buffer memory to a second buffer memory. The tone data thus stored in the second memory is then read out at a predetermined readout rate to reproduce a musical sound. It is possible to select either a first reproduction mode for reproducing a data file having tone data of plural channels recorded in an interleaved state, or a second reproduction mode for permitting a simultaneous reproduction of plural data files each having not-interleaved tone data recorded therein.

Abstract: A record and reproduction controlling device is connected to a hard disk memory via a bus. This controlling device receives from a computer information necessary for read/write operation, on the basis of which the controlling device performs its own process to write to or read from the hard disk. The record and reproduction controlling device temporarily stores tone data read out from the hard disk memory into a first buffer memory and then transfers the tone data from the first buffer memory to a second buffer memory. The tone data thus stored in the second memory is then read out at a predetermined readout rate to reproduce a musical sound. It is possible to select either a first reproduction mode for reproducing a data file having tone data of plural channels recorded in an interleaved state, or a second reproduction mode for permitting a simultaneous reproduction of plural data files each having not-interleaved tone data recorded therein.

Abstract: A record and reproduction controlling device is connected to a hard disk memory via a bus. This controlling device receives from a computer information necessary for read/write operation, on the basis of which the controlling device performs its own process to write to or read from the hard disk. The record and reproduction controlling device temporarily stores tone data read out from the hard disk memory into a first buffer memory and then transfers the tone data from the first buffer memory to a second buffer memory. The tone data thus stored in the second memory is then read out at a predetermined readout rate to reproduce a musical sound. It is possible to select either a first reproduction mode for reproducing a data file having tone data of plural channels recorded in an interleaved state, or a second reproduction mode for permitting a simultaneous reproduction of plural data files each having not-interleaved tone data recorded therein.

Abstract: An automatic performance apparatus provides a performance data memory including plural storing areas each capable of storing different performance data independently. The performance data can be selectively written in and read from each storing area. Based on the performance data read from each storing area, a musical tone signal for an automatic performance is generated independently. When the performance data memory includes two storing areas, the performance data concerning two tunes or two parts can be stored. One of two automatic performances based on the performance data can be selectively played. In addition, two automatic performances can be also player simultaneouly, wherein a predetermined delay time can be provided between two automatic performances. Further, predetermined kinds of rhythm patterns are pre-stored in a rhythm pattern memory in order to perform the desirable rhythm pattern as an accompaniment of the automatic performance.

Abstract: An automatic performance apparatus for recording performance data in a memory for controlling generation of musical tones, wherein the change or changes of pitch, key-on timing, key-off timing, note interval and/or note length data of a note can easily be effected. The note to be change is designated by positioning a cursor and operating a designation switch. The change of data of the note is achieved in accordance with the moving direction and amount of the cursor, for example, after the designation of the note.

Abstract: An automatic performance apparatus that can change the performance speed of desired sections in a piece of music automatically performed. The apparatus comprises a section designator for designating a specific section in the piece, a time evaluator for counting performance duration of the piece, a modifier for modifying either the duration of the specific section (or the duration of a section other than the specific section) by modifying the tempo of the automatic performance or duration of notes of the performance data so that the performance duration of the automatic performance becomes equal to the desired duration. Thus, the total duration of the piece is adjusted to the desired duration while maintaining the duration of the specified section (or the duration of the sections other than the specified section).