app.py

import numpy as np
import io
import soundfile as sf
import streamlit as st
from audio_recorder_streamlit import audio_recorder

import pedalboard as pb

st.title("👹 Voice Refuckulator")

audio_bytes = audio_recorder()
board = pb.Pedalboard([pb.Reverb(room_size=0.100), pb.Gain(-10)])

if audio_bytes:
    # data must be transposed, maybe before processing?
    wave, sr = sf.read(io.BytesIO(audio_bytes))
    effected = board(wave, sr, reset=False)
    cols = st.columns(5)
    stretch_factor = cols[0].slider("🧌 Trollizer", 1, 32, 16)
    chunk_factor = cols[1].slider("🕋 Chunkinator", 1, 16, 8)
    chunk_dividend = cols[2].slider("🫀 Dechunkizer", 1, 32, 16)
    shuffle = cols[3].slider("🤡 Impredictidiblize", 1, 32, 16)
    sr_factor = cols[4].slider("🏃‍♀️ Chirpidize", 1, 16, 8)
    stretched = []
    for chunk in np.array_split(effected, chunk_dividend):
        for i in range(chunk_factor):
            if i % shuffle == 0:
                for c in chunk:
                    for _ in range(stretch_factor):
                        stretched.append(c)                
            else:
                for c in chunk:
                    stretched.append(c)
    stretched = np.array(stretched)
    st.audio(stretched.T, sample_rate=sr*sr_factor)