big gap when running in looping mode
robmint opened this issue · 1 comments
robmint commented
Thank you for sharing your useful lib.
I am running the library on Arduino Uno with some HID USB firmware to make the Uno appear as a midi device.
The main MCU is running your lib and reading midi from SD card and playing it in looping mode. I am using your example katzen perc fullvel.mid file.
The issue i'm having is a big gap in the playback after the file finishes (about 10 seconds). I'm trying to achieve a seamless looping of the midi file.
I have tried with other midi files and it seems the gap is not always so long, but there is always a gap of some length.
I've used your example code MD_MIDIFile_Loop.
I am using a midi monitor tool display all the midi messages as they are received. From the beginning:
11:46:34.160 From MIDI Exercycle Control 1 Bank Select 0
11:46:34.161 From MIDI Exercycle Control 1 Bank Select (fine) 0
11:46:34.162 From MIDI Exercycle Program 1 0
11:46:34.163 From MIDI Exercycle Control 1 Pan (coarse) 64
11:46:34.164 From MIDI Exercycle Control 1 Chorus Send Level 0
11:46:34.165 From MIDI Exercycle Control 1 Channel Volume (coarse) 100
11:46:34.166 From MIDI Exercycle Control 1 Reverb Send Level 0
11:46:34.353 From MIDI Exercycle Note On 1 62 127
11:46:34.446 From MIDI Exercycle Note Off 1 62 64
11:46:34.738 From MIDI Exercycle Note On 1 64 127
11:46:34.831 From MIDI Exercycle Note Off 1 64 64
11:46:35.123 From MIDI Exercycle Note On 1 65 127
11:46:35.217 From MIDI Exercycle Note Off 1 65 64
11:46:35.509 From MIDI Exercycle Note On 1 67 127
11:46:35.602 From MIDI Exercycle Note Off 1 67 64
11:46:35.894 From MIDI Exercycle Note On 1 69 127
11:46:35.987 From MIDI Exercycle Note Off 1 69 64
11:46:37.049 From MIDI Exercycle Note On 1 60 127
11:46:37.143 From MIDI Exercycle Note Off 1 60 64
11:47:58.915 From MIDI Exercycle Program 15 0
11:48:25.162 From MIDI Exercycle Control 13 Foot Control (coarse) 4
11:48:25.165 From MIDI Exercycle Control 13 Controller 24 8
11:48:28.429 From MIDI Exercycle Note Off 1 101 114
11:48:28.588 From MIDI Exercycle Note Off 1 0 0
11:48:28.639 From MIDI Exercycle Note Off 1 0 0
11:48:41.806 From MIDI Exercycle Note Off 1 64 0
11:48:41.956 From MIDI Exercycle Note Off 1 0 0
11:48:41.967 From MIDI Exercycle Note Off 1 100 0
11:48:42.113 From MIDI Exercycle Note Off 1 0 120
11:48:45.501 From MIDI Exercycle Note Off 1 127 58
11:48:45.687 From MIDI Exercycle Note On 1 64 127
11:48:45.780 From MIDI Exercycle Note Off 1 64 64
11:48:46.072 From MIDI Exercycle Note On 1 65 127
11:48:46.165 From MIDI Exercycle Note Off 1 65 64
11:48:46.457 From MIDI Exercycle Note On 1 67 127
11:48:46.550 From MIDI Exercycle Note Off 1 67 64
11:48:46.843 From MIDI Exercycle Note On 1 69 127
11:48:46.936 From MIDI Exercycle Note Off 1 69 64
11:48:47.997 From MIDI Exercycle Note On 1 60 127
11:48:48.092 From MIDI Exercycle Note Off 1 60 64
11:48:48.371 From MIDI Exercycle Note Off 1 101 114
11:48:48.531 From MIDI Exercycle Note Off 1 0 0
11:48:48.582 From MIDI Exercycle Note Off 1 0 0
11:49:01.749 From MIDI Exercycle Note Off 1 64 0
11:49:01.898 From MIDI Exercycle Note Off 1 0 0
11:49:01.909 From MIDI Exercycle Note Off 1 100 0
11:49:02.056 From MIDI Exercycle Note Off 1 0 120
11:49:05.443 From MIDI Exercycle Note Off 1 127 58
11:49:05.629 From MIDI Exercycle Note On 1 64 127
11:49:05.722 From MIDI Exercycle Note Off 1 64 64
11:49:06.014 From MIDI Exercycle Note On 1 65 127
11:49:06.108 From MIDI Exercycle Note Off 1 65 64
11:49:06.400 From MIDI Exercycle Note On 1 67 127
11:49:06.493 From MIDI Exercycle Note Off 1 67 64
11:49:06.785 From MIDI Exercycle Note On 1 69 127
11:49:06.878 From MIDI Exercycle Note Off 1 69 64
11:49:07.939 From MIDI Exercycle Note On 1 60 127
11:49:08.034 From MIDI Exercycle Note Off 1 60 64
11:49:08.314 From MIDI Exercycle Note Off 1 101 114
11:49:08.474 From MIDI Exercycle Note Off 1 0 0
11:49:08.524 From MIDI Exercycle Note Off 1 0 0
11:49:21.692 From MIDI Exercycle Note Off 1 64 0
11:49:21.841 From MIDI Exercycle Note Off 1 0 0
11:49:21.852 From MIDI Exercycle Note Off 1 100 0
11:49:21.998 From MIDI Exercycle Note Off 1 0 120
11:49:25.386 From MIDI Exercycle Note Off 1 127 58
11:49:25.572 From MIDI Exercycle Note On 1 64 127
11:49:25.665 From MIDI Exercycle Note Off 1 64 64
11:49:25.957 From MIDI Exercycle Note On 1 65 127
11:49:26.050 From MIDI Exercycle Note Off 1 65 64
11:49:26.342 From MIDI Exercycle Note On 1 67 127
11:49:26.436 From MIDI Exercycle Note Off 1 67 64
11:49:26.728 From MIDI Exercycle Note On 1 69 127
11:49:26.821 From MIDI Exercycle Note Off 1 69 64
11:49:27.882 From MIDI Exercycle Note On 1 60 127
11:49:27.977 From MIDI Exercycle Note Off 1 60 64
11:49:28.256 From MIDI Exercycle Note Off 1 101 114
11:49:28.416 From MIDI Exercycle Note Off 1 0 0
11:49:28.467 From MIDI Exercycle Note Off 1 0 0
11:49:41.634 From MIDI Exercycle Note Off 1 64 0
11:49:41.783 From MIDI Exercycle Note Off 1 0 0
11:49:41.795 From MIDI Exercycle Note Off 1 100 0
11:49:41.941 From MIDI Exercycle Note Off 1 0 120
11:49:45.328 From MIDI Exercycle Note Off 1 127 58
11:49:45.514 From MIDI Exercycle Note On 1 64 127
11:49:45.608 From MIDI Exercycle Note Off 1 64 64
11:49:45.900 From MIDI Exercycle Note On 1 65 127
11:49:45.993 From MIDI Exercycle Note Off 1 65 64
11:49:46.285 From MIDI Exercycle Note On 1 67 127
11:49:46.378 From MIDI Exercycle Note Off 1 67 64
11:49:46.670 From MIDI Exercycle Note On 1 69 127
11:49:46.763 From MIDI Exercycle Note Off 1 69 64
11:49:47.824 From MIDI Exercycle Note On 1 60 127
11:49:47.919 From MIDI Exercycle Note Off 1 60 64
11:49:48.199 From MIDI Exercycle Note Off 1 101 114
11:49:48.359 From MIDI Exercycle Note Off 1 0 0
11:49:48.409 From MIDI Exercycle Note Off 1 0 0
Any ideas?
MajicDesigns commented
The library does not add or remove any delays. So unless the application is adding a delay in the code, it plays the file as it reads it with a small overhead when the file is started. The delay must be in the actual file. You should edit the MIDI file using an appropriate tool to remove any quiet time at the start or end.