JPS6424395U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a plan view of the key operation unit 1, FIG. 2 is an overall circuit diagram of an automatic performance device for an electronic musical instrument, FIG. 3 is a diagram showing the configuration of the external sound RAM 11 and internal sound ROM 12, and FIG. 4 is a diagram of the CPU 14. built-in register 35
5 is a specific circuit diagram of the performance part channel counting section 32, FIG. 6 is a diagram of signal time charts of each part of the performance part channel counting section 32, and FIG. 7 is a diagram of the operation decoder 33.
8 is a diagram showing the operation contents of the operation decoder 33, FIG. 9 is a concrete circuit diagram of the output circuit 13, and FIG. 10 is a diagram showing the 4-stage shift register 55 and the 4-stage circulation register 56. FIG. 11 is a flowchart of the overall processing including automatic performance processing using external sounds by the CPU 14, and FIG. 12 is a flowchart of automatic performance processing using external sounds. 3...Sampling key, 8...Microphone, 10
...A/D converter, 11...External sound RAM,
13...Output circuit, 14...CPU, 15...Music ROM, 17...Return address section, 18...
...Start address section, 19...End address section, 35...Built-in register.

Claims (1)

[Claims for Utility Model Registration] Waveform data storage means for storing waveform data for musical tones; write control means for writing external sounds into the waveform data storage means as waveform data for musical tones; and at least one piece of music. music data storage means in which music data for 10 minutes is stored in advance; musical sound generation and sound generation means for generating and emitting musical sounds based on the supplied waveform data; When the writing of the external sound waveform data is completed, the written external sound waveform data is read out based on the music data read from the music data storage means and sent to the musical sound generation sound emitting means. What is claimed is: 1. An automatic performance device for an electronic musical instrument, characterized in that it is equipped with: