| 摘要 |
A chord information output apparatus according to the present invention includes a keyboard, a key depression information detector, a chord detector for detecting a chord according to key information detected by the key depression information detector, and an internal information output section for sending detected chord information to an external device. The chord information output apparatus detects a chord upon keyboard key depression, and outputs the chord as chord information to an external device. An automatic accompaniment apparatus includes a memory for storing play data, an external information input section for receiving information from an external source, a chord information converter for converting, into chord information, information received from the external information input section, a play data converter for converting play data, read from the memory, corresponding to the chord information converted by the chord information converter, and a tone generator for producing a musical tone based on the play data converted by the play data converter. The automatic accompaniment apparatus receives information from an external device, converts the information into chord information, generates tone information by converting play data read from a memory in accordance with the chord information, and produces a musical tone based on the tone information.
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