file format guide

MIDI vs WAV: notes to edit, audio to deliver

MIDI is a set of instructions such as note pitch, start, length, and velocity. WAV is recorded or rendered audio. Use MIDI when you need to edit the melody; use WAV when you need to hear or deliver a selected sound.

MIDI note events are editable while WAV is an audio waveform chosen from an instrument and render. — One MIDI file can create many different WAV files when the instrument or mix changes.

Short answer: Keep the MIDI after conversion because it is editable. Assign an instrument in a DAW when you want playback, then export WAV when you need an audio version. Neither format is a replacement for the other.

What MIDI contains

A Standard MIDI file can describe notes, their timing, duration, velocity, and some performance controls. It does not contain the singer's voice, a guitar's tone, room ambience, a mix, or mastering. That is why opening a MIDI file may require assigning an instrument before you hear anything.

For an audio-to-MIDI workflow, the MIDI is the editable sketch. Check whether it rises, repeats, and pauses like the source, then repair only the note events you can justify from the original phrase.

What WAV contains

WAV is audio data. It preserves the sound that was recorded or rendered: the selected instrument, effects, timing, and mix at that moment. It is useful for listening, sharing, video work, and audio delivery, but it does not let you move one wrong note as directly as a MIDI piano roll.

Choose the file by the next task

Next task	Keep or use	Why
Correct pitch or timing	MIDI	Notes can be moved, shortened, deleted, or reassigned
Choose a piano, synth, or other sound	MIDI in a DAW	The instrument turns note events into playback audio
Send a playable audio version	WAV	The chosen sound and render are captured as audio
Return to a questionable conversion	Source audio plus MIDI	The audio remains the reference; MIDI remains editable

Do not confuse format conversion with transcription

Converting audio to MIDI estimates a melody from a recording. Converting MIDI to WAV renders notes through an instrument. They are opposite directions and solve different problems. MIDI Convert handles the first job for one dominant melody; it does not create full-song stems, chord recognition, or a multi-track arrangement.