Snip歌曲 调号检测
上传任意音频文件，立即识别其音乐调号与音阶。基于色度图分析技术，所有处理都在您的浏览器本地完成。
拖放音频文件，或点击浏览选择
MP3、WAV、OGG、FLAC、AAC、M4A
您的文件从不上传。所有处理都在您的浏览器中完成 — 不会向服务器发送任何内容。隐私政策。
正在分析音频…
点击任意调号即可试听该和弦，并与检测到的调号进行对比。
试用示例曲目
手边没有文件？从我们的免费音乐库中选取一首曲目，检测其调号。
Free Online Key Finder — Detect the Musical Key & Scale of Any Song
SnipSound's key finder analyzes any audio file and tells you its musical key and scale (major or minor). It supports MP3, WAV, OGG, FLAC, AAC, and M4A. The full analysis runs locally in your browser using the Web Audio API and a chroma-vector matching algorithm based on Krumhansl-Schmuckler key profiles — nothing is uploaded anywhere.
How It Works
The detector extracts a chroma vector (the energy in each of the 12 pitch classes) from your audio, then compares it against reference profiles for all 24 keys (12 major + 12 minor). The best match becomes the detected key, and you see a confidence score plus the top three candidates so you can sanity-check the result. Songs that modulate or have heavy effects may return mixed results — the alternative candidates help in that case.
Why You Need a Key Finder
Common uses: matching the key of a backing track when adding vocals or a new instrument, harmonic mixing for DJ sets (Camelot Wheel / circle of fifths), finding songs that work in the same key as your project, transposing samples to fit a song, or learning a tune by ear once you know its key.