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オーディオ プレーヤー Pro

Advanced audio player with speed change, pitch shift, AB loop, BPM detection, and built-in metronome. Perfect for music practice and transcription.

オーディオ プレーヤー Pro is a free online 音楽 tool that runs entirely in your browser — your files never leave your device and are never uploaded to any server.

About this tool

No installation, no signup; works on both phone and desktop, ready to use instantly.

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How to use

  1. 1 オーディオ プレーヤー Proツールページを開きます。
  2. 2 テキスト、URL、またはデータを入力エリアに貼り付けてください。
  3. 3 操作モードとパラメータを選択してください。
  4. 4 ツールを実行して結果を確認します。
  5. 5 結果をコピーまたはダウンロードしてください。

Why we built this tool

We noticed most online tools upload your files to remote servers. Since privacy is our core principle, we built this tool to process everything locally in your browser.

About オーディオ プレーヤー Pro: what you should know

Music learners, teachers, and producers exploring theory and practice tools. Whether you are studying chords, transcribing a melody, or building ear-training habits, this browser-based music tool supports your practice session without requiring a DAW or paid plugin.

Key features

  • Visual Learning Aids — On-screen notation and highlighted elements make abstract concepts concrete. Beginners can see what they are hearing.
  • All Processing in Browser — Audio synthesis and analysis run locally. Your practice sessions and uploads never leave your device.
  • Adjustable Practice Pace — Slow down or loop sections to focus on difficult passages. Build mastery gradually instead of struggling at full speed.

Common use cases

  • Quick Reference While Composing — When you are writing music and need to verify a chord or scale, look it up here and hear it instantly. No need to switch to a separate theory app.
  • Learning a New Concept — Open the tool when you encounter a theory concept you do not fully understand. Hearing and seeing it at the same time makes it click faster.

よくある質問

このツールは無料ですか？

はい、完全無料で登録不要です。

スマートフォンで使えますか？

はい、モバイルブラウザでタッチ操作に対応しています。

どのカテゴリに属していますか？

音楽

Is オーディオ プレーヤー Pro safe? Is my data uploaded or stored?

Yes. オーディオ プレーヤー Pro runs entirely in your browser: files you select are never uploaded to any server — all processing happens in your device's memory and is wiped when you close the page.

Privacy & Security: All processing happens locally in your browser. Files are never uploaded or stored.

Privacy: All processing happens locally in your browser. Your files and data never leave your device — no upload, no server, no tracking.