Max provides a number of objects that support recording, playing, and editing of MIDI file data. None of these exist in Pd, though a few appear in Pd-extended.
- The seq object records and plays back raw MIDI data.
- The text messages record and stop control recording.
- The text messages start and stop control playback.
- The text message start can have an argument to control the speed of playback (1024 = original tempo).
- The message delay 0 makes the sequence start at time = 0 (it removes a non-zero start interval).
- The write message can be used to save your masterpiece sequence to a file.
- The read message can be used to load an existing sequence file.
- seq exists in Pd-extended.
bourree.sc
- The follow object can record MIDI data or simple sequences of numbers.
- The follow object can take a file name argument (to load that file) or a read text message.
- Once the follow object has a sequence of data, it can "follow" a performer through the sequence and output an appropriate value and index number out its outlets.
- The "following" process is started by sending a follow text message to the object. An optional argument can be used to start from an arbitrary index within the sequence.
- Every time an input pitch (or number) matches the next value in the sequence, follow sends the index out its left outlet. In this way, one can know where in a score a performer is and trigger appropriate actions based on that.
- The funbuff object stores (x, y) pairs of numbers. An input x-value causes the corresponding y-value to be output.
- The follow object does not exist in either Pd or Pd-extended.
bourree.fb
- The mtr object can be used to record and playback up to 32 tracks of numbers, lists, or symbols.
- The number of tracks is specified as an argument to the mtr object.
- The mtr object responds to start, play, record, mute, and unmute messages, each of which can have an integer argument specifying a particular track. If no argument is given, the message is applied to all tracks. Or these messages can be sent directly to a particular track inlet.
- The next message causes the next message in each track to be output the corresponding track outlet. In addition, a two-item list is output from the leftmost outlet indicating the track number and event delta time for each track.
- The mtr object does appear to exist in Pd-extended.
- The detonate object provides multi-track sequencing and following functionality.
- The detonate object responds to a variety of messages, including start, startat, next, stop, record, follow, ...
- The start message puts detonate into "play" mode and next messages output the event data to outlets 2 - 8. If another subsequent event exists, a delta time value will be output from the leftmost outlet.
- After receiving a record message, all previous data is erased. Also, detonate cannot "overdub" tracks.
- In "follow" mode, incoming notes are compared to the event list and matches are sent out outlets 2 - 8.
- A standard MIDI file can be loaded into a detonate object using the read message.
- The detonate object does not exist in either Pd or Pd-extended.
bwv772.mid
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