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Create app.py
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app.py
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#!pip install gradio pydub
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#!apt install ffmpeg
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import gradio as gr
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from pydub import AudioSegment
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import tempfile
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import os
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def process_audio(file,
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left_source, # "left", "right", "mute"
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right_source # "left", "right", "mute"
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):
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# ステレオで読み込み
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audio = AudioSegment.from_file(file)
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left, right = audio.split_to_mono()
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# ソース選択
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def get_channel(source):
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if source == "left":
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return left
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elif source == "right":
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return right
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else: # mute
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return AudioSegment.silent(duration=len(audio))
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new_left = get_channel(left_source)
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new_right = get_channel(right_source)
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# ステレオ再構築
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combined = AudioSegment.from_mono_audiosegments(new_left, new_right)
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# 一時ファイルに保存
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with tempfile.NamedTemporaryFile(delete=False, suffix=".wav") as tmpfile:
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combined.export(tmpfile.name, format="wav")
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return tmpfile.name
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# UIの設定
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options = ["left", "right", "mute"]
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demo = gr.Interface(
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fn=process_audio,
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inputs=[
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gr.Audio(type="filepath", label="音声ファイル(ステレオ)"),
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gr.Radio(choices=options, value="left", label="左チャンネルに流す音"),
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gr.Radio(choices=options, value="right", label="右チャンネルに流す音")
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],
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outputs=gr.Audio(label="出力音声(設定済みステレオ)"),
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title="ステレオチャンネル編集ツール",
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description="左・右チャンネルの音声ソースを個別に設定して、新しいステレオ音声を出力します。"
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)
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if __name__ == "__main__":
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demo.launch(share=True, debug=True)
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