Audio Tools
Audio Speed Changer
Speed up or slow down audio from 0.25x to 4x with pitch preservation option.
Your files stay on your device - processed locally via WebAssembly, never uploaded
Drop audio file or click to upload
MP3, WAV, OGG, FLAC, AAC, M4A
🔒 Your audio files are processed in your browser. Nothing is uploaded.
Embed this tool on your website
Copy this code to add the Audio Speed Changer to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/audio-speed" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Audio Speed Changer by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/audio-speed">OptiPix Audio Speed Changer</a></p>
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About Audio Speed Changer
Last updated: May 2026
OptiPix Audio Speed Changer membolehkan anda melaraskan kelajuan main balik mana-mana fail audio daripada 0.25x (suku kelajuan) hingga 4x (empat kali ganda kelajuan) terus dalam pelayar anda. Pilih untuk mengekalkan nada (regangan masa untuk bunyi semula jadi) atau benarkan perubahan nada (kesan chipmunk pada kelajuan tinggi, suara garau pada kelajuan rendah). Butang kelajuan pratetap untuk nilai biasa. Eksport dalam MP3, WAV, OGG, FLAC, atau AAC. Menggunakan penapis atempo FFmpeg.wasm untuk regangan masa berkualiti tinggi.
How It Works
Alat ini menggunakan penapis atempo FFmpeg.wasm untuk perubahan kelajuan yang dikekalkan nada (merangkai berbilang atempo untuk kelajuan di luar julat 0.5-2.0), atau asetrate/aresample untuk perubahan kelajuan dengan peralihan nada.
Use Cases
- •Percepatkan podcast untuk pendengaran yang lebih pantas
- •Perlahankan muzik untuk latihan
- •Percepatkan rakaman kuliah
- •Cipta kesan audio gerakan perlahan
- •Laraskan kelajuan main balik buku audio
You Might Also Like
If you find Audio Speed Changer useful, check out these related tools: Audio Trimmer, Audio Volume Booster, and Audio Effects. All tools run entirely in your browser with no uploads or signups required.
Explore more: Browse all tools · Step-by-step guides · Tips & tutorials · Compare tools
Frequently Asked Questions
Bolehkah saya mengekalkan nada?
Julat kelajuan manakah yang disokong?
Adakah audio saya dimuat naik?
Bagaimanakah pemeliharaan nada berfungsi?
Format manakah yang disokong?
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