任意标签页，实时控制音高、速度与音量

藏在你浏览器标签页里的调音台。

一键改变正在播放内容的音高、调、速度和音量：把歌曲移到你的音域、放慢一段来学、或加速一节课。全部在你的设备上处理。

添加到 Chrome — 免费Firefox Edge

Chrome、Edge 和 Firefox · v2.7.5免费，无需账号0 字节已上传

音高

−2 ST

速度

0.90×

音量

235%

A–B 循环

1:27→2:35

YouTube−2 stSpotify+3 stSoundCloud+1 stBandcamp−5 stPodcasts2×Coursera1.5×any <video>±12 st

±0 st

音高半音数

设置中可扩展至 ±48 st

0.25–3×

播放速度

设置中可扩展至 8×

音量上限

设置中可扩展至 600%

已上传字节

永远如此

它能做什么

四个旋钮，掌控网页上的每一个声音。

Capo 把一台真正的音频引擎接入页面，让你直接掌控——无需下载、无需重新编码、无需等待。

用你喜欢的任意调来弹。

把整段演奏上下移调最多十二个半音，每次一个半音——给歌曲加上 Capo 跟着唱，或者降下来配合你手里的乐器。没有发颤，也没有花栗鼠般的尖嗓。

范围	−12 … +12 个半音
步进	1 个半音 · 微调 ±50 ¢
在设置中	最高 ±48 个半音

把难点放慢到龟速。

从四分之一速的练习节奏到三倍速，音高始终停在你设定的位置。用耳朵扒一段乐句，或者用一半时间听完一节课。

范围	0.25× … 3×
步进	0.05×
在设置中	最高 8×

Capo 弹窗，显示音高 +2 个半音、速度 0.92×、音量 185%，以及一个 A–B 循环

图 1 — 练习中的弹窗:+2 st · 0.92× · 185% · 循环 0:41.8 → 1:45.6

比网站允许的更响。

有些视频就是混得太轻。把播放音量推到远超浏览器 100% 上限的位置——最高 300%——而不动页面自带的播放器。

上限	300%
作用范围	按标签页
在设置中	最高 600%

锁定一个乐句。

给最棘手的四个小节设一个 A–B 循环，让它反复播放，慢慢攻克——无需动手，想练多少遍都行。

标记	A → B
精度	0.1 秒
重复	直到你停止

从设计之初就在设备上运行

你听的一切，从不离开你的电脑。

Capo 直接在页面内处理音频。中间没有服务器，没有要创建的账号，也不记录你播放了什么。它唯一保存的只有你的设置——而且只在本地。

评价

来自练习室的声音

5.0 · Chrome Web Store & Firefox Add-ons

Being able to change pitch and speed independently is such a basic need — and still I couldn’t find it anywhere. This is pretty much the best one right now. I’m surprised it isn’t popular.

swim-winFirefox Add-ons

Simple, useful, works exactly as expected. One of the few extensions I use every day.

Daniel WangChrome Web Store

I can finally match songs to my vocal range without distortion. Surprisingly accurate pitch control.

Yevhenii TkachenkoChrome Web Store

Exactly what I didn’t know I needed. Works on both Chrome and Firefox flawlessly.

Aarush TayalFirefox Add-ons

Perfect for learning songs — it lets me slow down the music, loop tricky parts, and practice lyrics at my own pace.

BobFirefox Add-ons

This has quietly become one of the most useful extensions in my browser.

Averos HowardChrome Web Store

Simple, useful, works exactly as expected. One of the few extensions I use every day.

Daniel WangChrome Web Store

I can finally match songs to my vocal range without distortion. Surprisingly accurate pitch control.

Yevhenii TkachenkoChrome Web Store

Exactly what I didn’t know I needed. Works on both Chrome and Firefox flawlessly.

Aarush TayalFirefox Add-ons

Perfect for learning songs — it lets me slow down the music, loop tricky parts, and practice lyrics at my own pace.

BobFirefox Add-ons

This has quietly become one of the most useful extensions in my browser.

Averos HowardChrome Web Store

Simple, useful, works exactly as expected. One of the few extensions I use every day.

Daniel WangChrome Web Store

I can finally match songs to my vocal range without distortion. Surprisingly accurate pitch control.

Yevhenii TkachenkoChrome Web Store

Exactly what I didn’t know I needed. Works on both Chrome and Firefox flawlessly.

Aarush TayalFirefox Add-ons

Perfect for learning songs — it lets me slow down the music, loop tricky parts, and practice lyrics at my own pace.

BobFirefox Add-ons

This has quietly become one of the most useful extensions in my browser.

Averos HowardChrome Web Store

Simple, useful, works exactly as expected. One of the few extensions I use every day.

Daniel WangChrome Web Store

I can finally match songs to my vocal range without distortion. Surprisingly accurate pitch control.

Yevhenii TkachenkoChrome Web Store

Exactly what I didn’t know I needed. Works on both Chrome and Firefox flawlessly.

Aarush TayalFirefox Add-ons

Perfect for learning songs — it lets me slow down the music, loop tricky parts, and practice lyrics at my own pace.

BobFirefox Add-ons

This has quietly become one of the most useful extensions in my browser.

Averos HowardChrome Web Store

Very handy for A–B repeat. I’m using it to memorize songs stanza by stanza.

ff user 99Firefox Add-ons

Absolute gem of an extension. Lightweight, fast, and the pitch changes sound natural.

Tiny SmithChrome Web Store

Part of my daily workflow now, and the developers keep improving it with new features and fixes. Highly recommended.

Bobby PiaoChrome Web Store

I’m a music lover, and this extension is amazing. It makes listening to and practicing music so much more enjoyable.

Hansen HarryChrome Web Store

Very handy for A–B repeat. I’m using it to memorize songs stanza by stanza.

ff user 99Firefox Add-ons

Absolute gem of an extension. Lightweight, fast, and the pitch changes sound natural.

Tiny SmithChrome Web Store

Part of my daily workflow now, and the developers keep improving it with new features and fixes. Highly recommended.

Bobby PiaoChrome Web Store

I’m a music lover, and this extension is amazing. It makes listening to and practicing music so much more enjoyable.

Hansen HarryChrome Web Store

Very handy for A–B repeat. I’m using it to memorize songs stanza by stanza.

ff user 99Firefox Add-ons

Absolute gem of an extension. Lightweight, fast, and the pitch changes sound natural.

Tiny SmithChrome Web Store

Part of my daily workflow now, and the developers keep improving it with new features and fixes. Highly recommended.

Bobby PiaoChrome Web Store

I’m a music lover, and this extension is amazing. It makes listening to and practicing music so much more enjoyable.

Hansen HarryChrome Web Store

Very handy for A–B repeat. I’m using it to memorize songs stanza by stanza.

ff user 99Firefox Add-ons

Absolute gem of an extension. Lightweight, fast, and the pitch changes sound natural.

Tiny SmithChrome Web Store

Part of my daily workflow now, and the developers keep improving it with new features and fixes. Highly recommended.

Bobby PiaoChrome Web Store

I’m a music lover, and this extension is amazing. It makes listening to and practicing music so much more enjoyable.

Hansen HarryChrome Web Store

Capo Pro

一块侧边栏，装下整套练习台。

Pro 解锁工作台——一块跟随标签页的侧边栏，把网页上的任何播放器变成练习工作室。

Capo Pro 工作台：音高旋钮、效果条、六段均衡器、笔记、带循环放大镜的时间轴、标记与片段

图 2 — 练习中的工作台：−2 st · 85% · 人声 45% · 循环 0:18.5 → 0:24.0

乐手仪表

把移调量写成音程，并按当前速度显示曲目还要播多久。

音高工作台

精密旋钮，配 ±50 ¢ 微调、变速模式与人声保护开关。

共振峰、混响与人声

塑造嗓音、加点空间感，或压低主唱、与乐队合奏。

六段均衡器

在实时频谱上直接画出滤波，为你的乐器腾出空间。

跟着曲目的笔记

练习笔记随曲目保存，回来时原样还在。

时间轴与放大镜

标记、片段与循环尽收一览，放大镜帮你精确定位循环点。

命名标记

标好前奏、主歌、独奏，一键跳转、循环或截取任意段落。

记得设置的片段

每个片段记住自己的速度、音高与次数，串起来就是一套练习流程。

价格

免费开始，准备好了再升级 Pro。

所有订阅都含 7 天免费试用——也可以一次付清，永久拥有 Pro。

Pro — 完整工作区

全部功能，全开音量。

—

/年

7 天免费试用

Capo Workspace — 侧边栏中的完整控制台
片段与标记，每首曲目可加笔记
速度训练器，循序渐进提速练习
录音室级均衡器与混响
人声保护 — 任何音高下人声都自然

开始免费试用

免费 — 工具栏弹窗

核心功能。

免费永久 · 无需账号

以半音和音分微调音高
速度控制，可选变速模式（varispeed）
音量增强，可超过 100%
在任何网站上使用 A–B 循环
页面上和弹窗内的键盘快捷键
按网站记住你的设置

添加到 Chrome — 免费

无需账号 · 无广告 · 永久免费

由 Paddle 提供安全结账 · 随时取消 · 14 天退款保证

给你听的一切都用上 Capo。

添加到 Chrome — 免费Firefox 和 Edge 也支持 · v2.7.5 · 无需账号