midi

来源： https://stackoverflow.com/questions/42628691/music21-get-all-notes-per-instrument-from-a-midi-file

来源： https://stackoverflow.com/questions/42628691/music21-get-all-notes-per-instrument-from-a-midi-file

来源： https://stackoverflow.com/questions/42628691/music21-get-all-notes-per-instrument-from-a-midi-file

问题 re: How to build MIDI file visualizer to get input from MIDI file and display MIDI timeline over the keyboard via DLP projector to match notes played by a real player Brendan Kavanagh is using such tool to build videos lighting up his woogie boogie played on piano https://www.youtube.com/watch?v=E3FTpv_R3EA Lighting Up Boogie Woogie and Blues Piano (Dr K) or https://www.youtube.com/watch?v=E3FTpv_R3EA&list=RDE3FTpv_R3EA&start_radio=1 https://www.bing.com/images/search?q=midi+file

问题 re: How to build MIDI file visualizer to get input from MIDI file and display MIDI timeline over the keyboard via DLP projector to match notes played by a real player Brendan Kavanagh is using such tool to build videos lighting up his woogie boogie played on piano https://www.youtube.com/watch?v=E3FTpv_R3EA Lighting Up Boogie Woogie and Blues Piano (Dr K) or https://www.youtube.com/watch?v=E3FTpv_R3EA&list=RDE3FTpv_R3EA&start_radio=1 https://www.bing.com/images/search?q=midi+file

问题 I have a MIDI file with marker as meta-messages. fname = "avm.mid" mid = MidiFile(fname) # input file of type 0 metas = [m for m in mid.tracks[0] if m.is_meta] I have stored the meta marker times in the list "chordTimes". The first maker ( chord position) does not start at 0. I make a new MIDI file: mo = MidiFile(type =1)# output file track = MidiTrack() Now I read through my list of desired chords and and add them to a new track to be added to mo. for i in range(0, len(chords)-1): chordInfo

问题 I am using Music21 in Python to read from a MIDI file and I want to only deal with the tracks that use a certain instrument. For example, if, in my MIDI file I have two tracks that use piano I want to be able to print the notes, change the instrument, etc. Right now I have a file with multiple tracks (drums, trumpet etc.) and I am just messing around with it trying to replace a certain instrument with another. However, when I do I get an error and some of the tracks are removed completely

问题 I am about to make a little program for a school project that is supposed to recognize the chords that are being played via a MIDI piano input (that's just one part of it). At the moment I got so far that for each press and each release of a key on the midi keyboard I get an object of the class ShortMessage . My question: How do I figure out if the key has been pressed or released? In each case, press and release, the static variable NOTE_OFF does contain the value 128, the variable NOTE_ON

问题 I am reading midi files in as3 (flash cs5) with the help of the helpful library that is called midas ( http://code.google.com/p/midas3/) - the midi-as3 library. I am trying to figure out a simple way to calculate the whole duration of the midi file (for example - total time of 4 minutes or 6 minutes...). I assume I could calculate the last note of each track + check the tempo and figure it out, but I was wondering if: Is the duration of the midi file is written somewhere in the data that I

问题 I am reading midi files in as3 (flash cs5) with the help of the helpful library that is called midas ( http://code.google.com/p/midas3/) - the midi-as3 library. I am trying to figure out a simple way to calculate the whole duration of the midi file (for example - total time of 4 minutes or 6 minutes...). I assume I could calculate the last note of each track + check the tempo and figure it out, but I was wondering if: Is the duration of the midi file is written somewhere in the data that I