Why does it show two BPMs, like "150 or 75"?

Because plenty of songs can honestly be counted at either tempo. A half-time beat reads as 75 to one estimator and 150 to another, and neither is wrong. TuneBad shows both numbers and lets you pick the one that matches how you'd count the track.

How accurate is the key and BPM detection?

It runs on essentia, the same engine behind most of the popular key and BPM tools, and it measures your actual audio rather than looking the song up in a database. Key is reliable on anything with clear harmony, but a track that modulates partway through only gets one answer, and sparse or atonal music can fool it. If a number looks wrong, trust your ears.

Why doesn't the key match what another site says?

Estimators disagree, most often between a key and its relative minor or major, because the two share the same notes. The Camelot code makes that easier to work with: relative keys sit at the same number, so 8A and 8B still mix. If two tools disagree, play a scale over the track and pick the one that sits right.

Is my file uploaded anywhere?

No. The analysis runs in your browser, so the audio never leaves your device, and there's no account to make. That's also why you can analyze an unreleased mix or a bootleg that no lookup database would have.

文件分析工具

上传音频文件以查看波形并分析关键音乐数据。

拖放音频文件支持WAV、MP3、M4A、FLAC、OGG，最大200MB

分析结果

文件名	时长	BPM	调性	Camelot	置信度	分析时间
尚未分析任何曲目。

BPM工具

手动打拍子，或从同一BPM来源运行精确节拍器。

节拍器

带重音控制的节奏锁定点击。

速度

14/4

BPM打拍器

跟随节奏打拍，并将结果发送到所有速度工具。

音高工具

将频率转换为最接近的音符、八度和音分偏差。

频率转音高

基于MIDI小数音符公式。

频率

Hz

A40 音分

转换器

从YouTube、Spotify、SoundCloud等平台下载为MP3、WAV或MP4。也可以转换本地音频文件。

粘贴链接

支持YouTube、SoundCloud、Bandcamp、Vimeo、Mixcloud、TikTok、Instagram、X、Audiomack、Spotify — 仅限个人使用。首次转换可能需要约一分钟启动。

空闲粘贴链接并选择质量以创建MP3。

本地音频文件

完全在浏览器中转换本地音频文件。

空闲上传WAV、M4A、OGG、FLAC或其他浏览器可读的音频文件以创建MP3。

响度惩罚

查看各流媒体平台会将您的曲目降低多少音量。

拖放音频文件WAV、MP3、M4A、FLAC、OGG

Slowed + Reverb 工作室

放慢、加速、添加混响，重塑任意曲目。

拖放音频文件MP3或WAV，最大200MB

上传曲目拖放MP3或WAV文件以放慢、加速并添加混响。

MP3剪切器

把歌曲剪成你想要的片段，加上淡入淡出，然后保存为MP3或WAV。一切都在浏览器里完成。

拖放音频文件

选区拖放音频文件

分析历史

最近的结果会保存在此设备上。

尚无已保存的分析。