Autotune Audio with MAutoPitch using Python and Pedalboard

autotune_audio_in_python.py

import pedalboard
from pedalboard.io import AudioFile

# download and install MAutoPitch using https://www.meldaproduction.com/MFreeFxBundle

MAutoPitch = pedalboard.load_plugin(
    "/Library/Audio/Plug-Ins/VST3/MeldaProduction/Pitch Shift/MAutoPitch.vst3"
)

MAutoPitch.depth_automatic_tuning = 100 # Only use tuned output
MAutoPitch.speed_automatic_tuning = 100 # Lock pitch immediately
MAutoPitch.keep_formants_effects = 0 # Don't try to correct formants
MAutoPitch.stabilization_detector = 0 # 0ms attack time

board = pedalboard.Pedalboard([MAutoPitch])

# Open an audio file for reading, just like a regular file:
with AudioFile('vocadito_test.wav') as f:
    # Open an audio file to write to:
    with AudioFile('output.wav', 'w', f.samplerate, f.num_channels) as o:

        # Read one second of audio at a time, until the file is empty:
        while f.tell() < f.frames:
            chunk = f.read(f.samplerate)

            # Run the audio through our pedalboard:
            effected = board(chunk, f.samplerate, reset=False)

            # Write the output to our output file:
            o.write(effected)