app.py

import gradio as gr
from pydub import AudioSegment
import numpy as np
import noisereduce as nr
import scipy.io.wavfile as wav
import os

def reduce_noise(audio_file_path, noise_level):
    # Load audio
    audio = AudioSegment.from_file(audio_file_path)
    audio = audio.set_channels(1)
    audio = audio.set_frame_rate(44100)
    audio = audio.normalize()

    # Save temp wav
    temp_input = "temp_input.wav"
    audio.export(temp_input, format="wav")

    # Read raw audio
    rate, data = wav.read(temp_input)

    # Noise Reduction
    reduced = nr.reduce_noise(y=data, sr=rate, prop_decrease=noise_level)

    # Save output
    output_path = "output.wav"
    wav.write(output_path, rate, reduced.astype(np.int16))

    return output_path

# Gradio Interface
interface = gr.Interface(
    fn=reduce_noise,
    inputs=[
        gr.Audio(type="filepath", label="🔊 Upload your audio file"),
        gr.Slider(minimum=0.1, maximum=1.0, value=0.8, step=0.1, label="🎚️ Noise-reduction level (low → high)")
    ],
    outputs=gr.Audio(type="filepath", label="✅ Noise-removed output"),
    title="🎧 Free Noise Remover",
    description="Upload your audio file and set the level to get a noise-free output.",
)

interface.launch()