Akoff Sound Labs develops music software that transcribes audio recordings, makes chords and arranges songs. To create a MIDI sequence for a melody recorded in audio format (WAV, MP3, etc.) a musician must determine pitch, velocity and duration of each note being played and record these parameters into a sequence of MIDI events. A music transcribing software must do the same things. Even for a single instrument composition it is not a simple task, because an audio recording contains sampled waveform signals and doesn't contain any music specific data.
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