BACKGROUND TONE CONTROLLER, BACKGROUND TONE CONTROL METHOD, READABLE RECORDING MEDIUM RECORDING BACKGROUND TONE PROGRAM, AND VIDEO GAME DEVICE

摘要

PROBLEM TO BE SOLVED: To make it possible to enhance the effect of background tones within the range of a set number of channels by providing a background tone controller with a sound volume control means for changing the output ratio of the sound volume of the background tones in correspondence to the change of events. SOLUTION: The sound volume control means 81 of a sound control means 80 controls the output ratio at the time of generation of the background tones from a speaker 4 in correspondence to the sound volume set by background tone data for every channel and executes a cross fade sound volume control by using a sound volume control function 51. Now, when the day or night state of a game progresses from night to morning, the output ratios of the respective channels of the background tone data for night to the set sound volume are maintained at 100% for the first to the fourth channels of six-channel constitution and 0% for the fifth and sixth channels from the beginning. When a start signal is outputted at the required time, the output ratios of the first to the fourth channels are decreased from 100% and the output ratios of the fifth and sixth channels are successively increased from 0% according to the sound volume control function 51.