Patent ID: 6718186
Filing Date: 2004-04-06
Classification: H04M

Abstract:
A melody playing system for a melody having a changeable tempo, comprising:a data storage device for storing a melody data representing a melody, said melody data including a tempo data representing a tempo of said melody and a plurality of tone data representing tones in said melody, said tone data including a pitch data representing a pitch of each of said tones and note data representing a sound note of each of said tones; a control unit for retrieving said tone data in an order of occurrence in said melody to calculate a sound time length for each of said retrieved tone data based on said tempo data and said note data; and a sound source controlled by said control unit to play said melody based on said pitch data and said sound time length; wherein the tempo of the melody can be changed by changing the tempo data without rewriting the tone data; and wherein said data storage device further stores a table tabulating relative time lengths for said sound notes used in said melody.