Information processing apparatus and method for reproducing an output audio signal from midi music playing information and audio information

An information processing method employed for reproducing an output audio signal from MIDI music playing information and audio information, comprising:

• a receiving step for receiving tempo change information indicating a tempo of said output audio signal;
• a setting step for setting a time indicating a starting time of a tempo change of said output audio signal;
• a MIDI reproducing step for reproducing a MIDI audio signal from MIDI playing information with said tempo from said time and generating a SYNC signal;
• an audio reproducing step for reproducing an audio signal from audio information with said tempo from said time and outputting said reproduced audio signal synchronously with said SYNC signal;
• and
• a mixing step for mixing said MIDI audio signal and said reproduced audio signal,
• wherein said time is determined based on a delay time until the tempo of said MIDI audio signal is changed and a delay time until the tempo of said reproduced audio signal is changed.

A supply medium used for supplying a program to said information processing apparatus for reproducing an output audio signal from MIDI playing information and audio information so that said program can be read by a computer that executes processes in:

• a receiving step for receiving tempo chance information indicating a tempo of said output audio signal;
• a setting step for setting a time indicating a starting time of a tempo change of said output audio signal;
• a MIDI reproducing step for reproducing a MIDI audio signal from said MIDI playing information with said tempo from said time and generating a SYNC signal;
• an audio reproducing step for reproducing an audio signal from said audio information with said tempo from said time and outputting said reproduced audio signal synchronously with said SYNC signal;
• and
• a mixing step for mixing said MIDI audio signal and said reproduced audio signal,
• wherein said time is determined based on a delay time until the tempo of said MIDI audio signal is changed and a delay time until the tempo of said reproduced audio signal is changed.

An information processing apparatus for reproducing an output audio signal from MIDI music playing information and audio information, comprising:

• receiving means for receiving key change information indicating a key of output audio signal;
• setting means for setting a time indicating starting time of changing the key of output audio signal;
• MIDI reproducing means for reproducing MIDI audio signal from MIDI music playing information with said key from said time and generating a SYNC signal;
• audio reproducing means for reproducing audio signal from audio information with said key from said time and outputting reproduced audio signal synchronously with said SYNC signal;
• and
• mixing means for mixing said MIDI audio signal and said reproduced audio signal,
• wherein said time is determined based on a delay time until the key of said MIDI audio signal is changed and a delay time until the key of said reproduced audio signal is changed.

An information processing method employed for reproducing an output audio signal from MIDI music playing information and audio information, comprising:

• a receiving step for receiving key change information indicating a key of output audio signal;
• a setting step for setting a time indicating starting time of changing the key of output audio signal;
• a MIDI reproducing step for reproducing MIDI audio signal from MIDI music playing information with said key from said time and generating a SYNC signal;
• an audio reproducing step for reproducing audio signal from audio information with said key from said time and outputting reproduced audio signal synchronously with said SYNC signal;
• and
• a mixing step for mixing said MIDI audio signal and said reproduced audio signal,
• wherein said time is determined based on a delay time until the key of said MIDI audio signal is changed and a delay time until the key of said reproduced audio signal is changed.

A supply medium used for supplying a program to said information processing apparatus for reproducing an output audio signal from MIDI playing information and audio information so that said program can be read by a computer that executes processes in:

• a receiving step for receiving key change information indicating a key of said output audio signal;
• a setting step for setting a time indicating starting time a change of key of said output audio signal;
• a MIDI reproducing step for reproducing a MIDI audio signal from said MIDI playing information with said key from said time and generating a SYNC signal;
• an audio reproducing step for reproducing an audio signal from said audio information with said key from said time and outputting said reproduced audio signal synchronously with said SYNC signal;
• and
• a mixing step for mixing said MIDI audio signal and said reproduced audio signal,
• wherein said time is determined based on a delay time until the key of said MIDI audio signal is changed and a delay time until the key of said reproduced audio signal is changed.