Original Summary

Most online decibel meters and tuners are covered in ads, don't explain how they measure, or push you to install an app. I wanted one site that opens instantly on a phone or laptop and does the job properly. What it does: - Decibel meter: live dB with min, average, and max, using the standard A/C/Z weightings. There's a classroom traffic-light mode teachers can put on the board, and a concert mode that shows how long you can safely listen at that level. - Mic test: check your mic before a call, with a 5-second playback and plain-English fixes. - Tuner: guitar (with alternate tunings), bass, ukulele, violin, cello, banjo, mandolin, harp, piano, and wind instruments, with written-pitch mode for trumpet, clarinet, and sax. - Metronome: 20 to 300 BPM, odd time signatures, and a speed trainer. Clicks are timed on the audio clock, so it doesn't drift. Everything runs locally. No audio is uploaded or recorded, and there's no account. The hardest part was accuracy. Phone and laptop mics vary a lot, so uncalibrated readings can be 5 to 10 dB off. You can calibrate against a reference meter or a quiet room, and people with a real sound meter can share their offset so others with the same mic get a better starting point. Stack: Astro, Tailwind, and plain TypeScript on Cloudflare Pages. The audio runs in AudioWorklets. It's funded by ads and affiliate links in the gear buying guides. https://soundlevel.app I'd like feedback on two things: which tool you'd add next, and whether the readings look right on your device (especially iPhones).   submitted by   /u/kae0r [link]   [comments]

  • 情报分类：工作与职业机会
  • 分类依据：内容涉及招聘、求职或职业发展
  • 信息来源：Reddit · SideProject
  • 发布时间：2026/9/28 20:02:05