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import streamlit as st
import soundfile as sf
import io
import numpy as np
from pydub import AudioSegment

# Define a Streamlit app
st.title("Audio Processing App")

# Upload the input audio file
uploaded_audio = st.file_uploader("Upload an audio file", type=["mp3", "wav", "ogg", "flac", "wma", "m4a"])

if uploaded_audio is not None:
    audio_bytes = uploaded_audio.read()

    # Convert audio file to numpy array using soundfile
    audio, sample_rate = sf.read(io.BytesIO(audio_bytes))

    # Convert the audio to 16-bit to avoid unsupported 24-bit formats
    audio = (audio * 32767).astype(np.int16)

    # Create an AudioSegment from the audio data
    audio_segment = AudioSegment(
        audio.tobytes(),
        frame_rate=sample_rate,
        sample_width=2,
        channels=1
    )

    # Slow down the audio based on user's input speed factor
    st.write("Slowing down audio...")
    slowed_audio = audio_segment.speedup(playback_speed=0.7)

    # Provide a link to download the processed audio
    st.audio(slowed_audio.export(format="wav").read(), format="audio/wav")

# Run the Streamlit app
if __name__ == "__main__":
    st.write("Upload an audio file to process.")