Performance information recording/reproducing apparatus having correction techniques using event and state information

A performance information recording and playing apparatus

• event information means for generating event information, said event information representing a change in state of a musical tone;
• state information generating means for generating state information which indicates a state at any given time of a musical tone of a predetermined musical tone after a change has occurred in event information;
• and
• recording means for recording the event information and the state information generated by said state information generating means in a recording media sequentially;
• playing means for reproducing event information which corresponds to changes in a predetermined musical tone and state information which indicates a state of a musical tone of the predetermined musical tone after a change has occurred according to the event information, said event information and state information having been recorded in a recording media sequentially;
• and
• event information correcting means for correcting errors in the event information reproduced from the recording media by said playing means based on the state information reproduce in the same manner.

A performance information recording and playing apparatus comprising:

• event information means for generating event information, said event information representing a change in state of a musical tone;
• state information generating means for generating state information which indicates a state of a musical tone of a predetermined musical tone after a change has occurred in event information, said state information representing a state of a musical tone at any given time;
• recording means for recording the event information and the state information generated by said state information generating means in a recording media sequentially;
• playing means for reproducing event information which corresponds to changes in a state of a predetermined musical tone and state information which indicates a state at any given time of a musical tone of the predetermined musical tone after a change has occurred according to the event information, said event information and state information having been recorded in a recording media sequentially;
• and
• event information correcting means for correcting errors in the event information reproduced from the recording media by said playing means based on the state information reproduced in the same manner;
• said event information including note-off information and note-on information;
• said state information including a value representing a difference between a number of the note-ons a number of the note-offs for a predetermined musical tone.

A performance information recording and playing apparatus comprising:

• event information means for generating event information, said event information representing a change in state of a musical tone;
• event information number generating means for generating an event information number representing a number of events said number of events being determined by counting sequentially events which cause a change in a predetermined musical tone sequentially;
• recording means for recording event information and said event information number in a recording media sequentially;
• playing means for reproducing event information which represents a change in a state of a predetermined musical tone and an event information number which indicates a number of events up to a present, said event information number being determined by counting the events which have been recorded in a recording media sequentially;
• and
• event information correction means for correcting errors in the event information reproduced from the recording media by said playing means based on said event information number which is reproduced in a same manner.

A performance information recording and playing apparatus

• all note-off information generating means for generating all note-off information indicating that all notes for a predetermined MIDI channel are in a note-off state;
• and
• all note-off information recording means for recording event information which represents a change in a predetermined musical tone and said all note-off information generated by said all note-off information generating means in a recording media sequentially,
• playing means for reproducing event information which represents a change in a predetermined musical tone and all note-off information indicating that all notes for a predetermined MIDI channel are in a note-off state, said event information and all note-off information having been recorded in a recording media sequentially;
• and
• event information correction means for correcting errors in the event information reproduced from the recording media by said playing means based on said all note-off information reproduced in a same manner.