Capo – Pitch & Speed Changer 作者: Elyra Labs、 John Norback
Change the pitch, key, and speed of any audio or video — on YouTube, Spotify, SoundCloud & more. Transpose, slow down, and loop.
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Capo is a pitch changer, speed controller, and volume booster for any audio or video on any website — YouTube, Spotify Web, SoundCloud, Bandcamp, podcasts, audiobooks, lectures, and more.
Change the key of a song, slow down music without changing pitch, boost quiet videos, loop the hard part, and practice with studio-style tools — right in your browser, on the page you're already watching.
FREE FOREVER
🎵 Pitch Changer — transpose any song up or down 12 semitones and fine-tune by cents, with clear, natural-sounding audio.
🐢 Speed Changer — slow down or speed up playback from 0.25× to 3× without changing the pitch, or flip on Varispeed for classic tape-style slowdown.
🔊 Volume Booster — push volume up to 300%, well past the browser's limit, or pull it down when a site is too loud.
🔁 A/B Loop — repeat any section hands-free for practice, transcription, or review.
💾 Per-Site Settings — Capo remembers your setup for every website automatically.
⌨ Keyboard Shortcuts — control pitch, speed, volume, and looping without opening the popup.
CAPO PRO — A PRACTICE STUDIO IN YOUR SIDE PANEL
Upgrade to unlock the Capo Workspace, a full control surface that stays beside your tab:
🎙 Vocal Reducer — turn down the lead vocal on any track for karaoke, backing tracks, or sing-along practice.
🗣 Preserve Voice — keep vocals natural at any pitch with formant preservation.
📈 Speed Trainer — start slow and ramp up the tempo automatically, loop by loop, until you're at full speed.
🎚 Studio Equalizer — shape the sound with a six-band EQ and real-time spectrum display.
✨ Reverb — add space and ambience, from a touch of room to slowed-and-reverb vibes.
📌 Clips & Markers — save sections of a track with their own pitch, speed, and loop settings, drop markers on the timeline, and keep notes per track.
Every subscription starts with a 7-day free trial — or pay once for lifetime access.
GREAT FOR
🎸 Musicians — transpose songs to your key, slow down solos, loop tricky passages, and build speed with the trainer.
🎤 Singers & karaoke — change the key to fit your voice and reduce vocals to sing over the original track.
🌎 Language learners — slow down speech, repeat phrases, and train your ear at your own pace.
📚 Podcasts, audiobooks & lectures — speed up listening and replay what you missed.
🎧 Everyday listening — boost quiet videos, EQ bad mixes, and make slowed + reverb or nightcore-style versions of any song in real time.
WHY CAPO
• High-quality audio engine — pitch shifts and slow-downs stay clear, not garbled or robotic.
• Works on virtually any site with audio or video — no downloads, no re-encoding, no waiting.
• Fast, clean popup plus a full Pro workspace when you want more.
• Available in 52 languages.
PRIVACY
Capo runs locally in your browser. No audio ever leaves your device, and the free version needs no account. Optional, anonymous diagnostics help us fix broken sites — and you can turn them off anytime.
Take control of any audio or video — add Capo and tune the web to your ear.
Change the key of a song, slow down music without changing pitch, boost quiet videos, loop the hard part, and practice with studio-style tools — right in your browser, on the page you're already watching.
FREE FOREVER
🎵 Pitch Changer — transpose any song up or down 12 semitones and fine-tune by cents, with clear, natural-sounding audio.
🐢 Speed Changer — slow down or speed up playback from 0.25× to 3× without changing the pitch, or flip on Varispeed for classic tape-style slowdown.
🔊 Volume Booster — push volume up to 300%, well past the browser's limit, or pull it down when a site is too loud.
🔁 A/B Loop — repeat any section hands-free for practice, transcription, or review.
💾 Per-Site Settings — Capo remembers your setup for every website automatically.
⌨ Keyboard Shortcuts — control pitch, speed, volume, and looping without opening the popup.
CAPO PRO — A PRACTICE STUDIO IN YOUR SIDE PANEL
Upgrade to unlock the Capo Workspace, a full control surface that stays beside your tab:
🎙 Vocal Reducer — turn down the lead vocal on any track for karaoke, backing tracks, or sing-along practice.
🗣 Preserve Voice — keep vocals natural at any pitch with formant preservation.
📈 Speed Trainer — start slow and ramp up the tempo automatically, loop by loop, until you're at full speed.
🎚 Studio Equalizer — shape the sound with a six-band EQ and real-time spectrum display.
✨ Reverb — add space and ambience, from a touch of room to slowed-and-reverb vibes.
📌 Clips & Markers — save sections of a track with their own pitch, speed, and loop settings, drop markers on the timeline, and keep notes per track.
Every subscription starts with a 7-day free trial — or pay once for lifetime access.
GREAT FOR
🎸 Musicians — transpose songs to your key, slow down solos, loop tricky passages, and build speed with the trainer.
🎤 Singers & karaoke — change the key to fit your voice and reduce vocals to sing over the original track.
🌎 Language learners — slow down speech, repeat phrases, and train your ear at your own pace.
📚 Podcasts, audiobooks & lectures — speed up listening and replay what you missed.
🎧 Everyday listening — boost quiet videos, EQ bad mixes, and make slowed + reverb or nightcore-style versions of any song in real time.
WHY CAPO
• High-quality audio engine — pitch shifts and slow-downs stay clear, not garbled or robotic.
• Works on virtually any site with audio or video — no downloads, no re-encoding, no waiting.
• Fast, clean popup plus a full Pro workspace when you want more.
• Available in 52 languages.
PRIVACY
Capo runs locally in your browser. No audio ever leaves your device, and the free version needs no account. Optional, anonymous diagnostics help us fix broken sites — and you can turn them off anytime.
Take control of any audio or video — add Capo and tune the web to your ear.
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