Patent ID: 7109407
Filing Date: 2006-09-19
Classification: G09B,G10H

Abstract:
1. A chord presenting apparatus comprising: a chord information storage device for storing plural pieces of chord information which represent a series of chords; a chord presenting device for reading out chord information stored in said chord information storage device and for presenting chords represented by the chord information to a user; a chord conversion table that stores conversion information for converting a first chord type to a second chord type; and a chord converter for converting said first chord type in said pieces of chord information stored in said chord information storage device to said second chord type in accordance with the conversion information stored in said chord conversion table, so as to supply the converted chord information to said chord presenting device, wherein said first chord type includes chords with tension, chords with an on-base, sixth chords, suspended fourth chords, major seventh chords, and chords with added tones, and wherein said first chord type is converted to said second chord type as follows: chords with tension are converted to chords without tension, said chords with the on-base are converted to chords without the on-base, said sixth cords are converted to chords having same constitutent tones of the sixth chords, said suspended fourth chords are converted to chords made of neighboring constituents tones of the fourth chords, said major seventh chords are converted to chords having same tonic, dominant, and subdominant with the major seventh chords, and said chords with added tones are converted to chords without added tones.