Open mGBA, load the original ROM, and navigate to the song’s location. Record the output as a 44.1kHz WAV. This is your ground truth .
If any check fails, you must manually edit the MIDI in a piano roll. Once corrected, add a metadata tag: @Verified_Against_Hardware inside the MIDI file’s note or marker list. This allows others to trust your file. minigsf to midi verified
– Each hardware voice (typically 8–12 simultaneous channels on the GBA) is mapped to a MIDI channel. The frequency value is converted to a MIDI note number using a standard formula: Note = 12 * log2(frequency / 440) + 69 . Pitch bends, volume changes, and panning become MIDI controller messages (CC1, CC7, CC10). However, GBA-specific effects like “echo with delay” have no direct MIDI equivalent and are often discarded or approximated. Open mGBA, load the original ROM, and navigate