Audio signal outputting method and BGM generation method

A method for outputting audio signal comprising the steps of:

• detecting a sound producing factor which is a cause of sound generation;
• and
• deciding on a starting timing for producing a sound, which corresponds to the sound producing factor, on the basis of the progress of music which is being reproduced at the time of generation of the sound producing factor.

A method for outputting audio signal comprising the steps of:

• detecting an operational signal output from a controller operated by a player as a sound producing factor which is a cause of sound effect generation for the processing of a game;
• and
• deciding on a starting timing for producing a sound, which corresponds to the sound producing factor, on the basis of the progress of music which is being reproduced at the time of generation of the sound producing factor.

An audio signal outputting device comprising:

• detecting means for detecting a sound producing factor which is a cause of sound generation;
• and
• sound producing starting timing adjuster for deciding on a starting timing for producing a sound, which corresponds to the sound producing factor, on the basis of the progress of music which is being reproduced at the time of generation of the sound producing factor.

A method for generating background music comprising the steps of:

• generating an accompaniment which corresponds to the status of a game;
• and
• generating a melody by detecting a sound producing factor which is a cause of melody generation and by deciding on a starting timing for producing the melody which corresponds to the sound producing factor on the basis of the progress of the accompaniment at the time of generation of the sound producing factor.