I play piano and I built this for myself recently.<p>Type a song, hit play, and the chords come at you on the beat. It&#x27;s Rock Band for real instruments: the chord you need is the one under the playhead. I&#x27;ve almost got the entire music database here. I dare you to find a public track that isn&#x27;t in here. Catalog is 6.8M songs &#x2F; 103k artists.<p>Librosa beat detection. ONNX graph combined with my custom tuned BTC. Bass notes processed independently.<p>Median over 4536 cold runs: 2.15s to decode, 122x realtime. Download is the slow part at 8.4s median. Moving the audio is the bottleneck.<p>MP3 search is a fancy matching algorithm; if the song is on the internet it&#x27;ll find it. It was hard to make this pipeline run fast! Should probably stream the audio instead. But I ha

  • 情报分类：项目价值、技术价值
  • 命中依据：和弦合成新方法，创新项目与技术实现均有价值
  • 来源：Hacker News 新项目
  • 原作者：brandoniscool
  • 发布时间：2026/9/9 03:15:13