Troubleshooting
No sound, no microphone, a note that looks wrong, a link that opens differently — and what to do about each.
| Symptom | Likely cause & fix |
|---|---|
| Play button flashes but nothing is heard | The Volume slider is at 0, or the device is muted. Raise the slider, unmute the device and tap again. |
| No sound on an iPhone | The ring/silent switch mutes web audio. Flip it to ring, raise the volume, tap again. |
| Low notes are silent | Phone and laptop speakers play little below about 80 Hz. Use headphones or the PA for the kick-to-key table. |
| Tone sounds harsh | Wave is set to Square or Saw. Switch to Sine for a clean reference. |
| Microphone access was blocked. | Permission was denied. Allow the microphone for squaresmile.de in the browser's site settings, reload, and tap Start listening again. |
| No microphone found. | No input device is connected or enabled. Plug in or enable a microphone and start again. |
| The microphone is in use by another app. | A DAW, a call or another tab holds the microphone. Close it and start again. |
| Microphone not available in this browser. | The browser does not expose a microphone. Use a current version of Safari, Chrome, Firefox or Edge. |
| Tuner shows listening… but no note | The signal is too quiet. Play one note, closer to the microphone. |
| Tuner shows no clear pitch | The sound is noise or several notes at once. Play one note; a chord can also give a misleading reading. |
| Tuner shows above range | The pitch is above about 3 kHz, for example a feedback ring. Type the Hz from your analyser into Hz → Note instead. |
| Bass or kick reads nothing or jumps | The microphone hardly hears the fundamental. Hold the phone close to the cabinet or drum, or use an interface, and give the note a moment. |
| Tuner stopped on its own | The tab was hidden; the microphone is released on purpose. Tap Start listening again. |
| Tuner reads sharp or flat on every note | Check the A4 reference at the top — the tuner follows it. |
| The note for a known frequency looks wrong | A non-440 A4 is selected, possibly from a shared link (a4= in the address) or your saved setting. Tap 440. |
| A shared link opens with different values | Only the frequency, note, harmonic and A4 are in the link. Wave and volume are personal and not shared. |
440,5 reads as 4405 Hz |
You are on an old cached copy. Reload once; the current version reads a decimal comma. |
| Note names show H instead of B | The tool is in German, which calls B natural H. Switch the platform language, or read H as B. |
| Search finds nothing | Search matches note names (C#4, Db4), MIDI numbers and the start of a frequency. 440 works; 40 in the middle of a number does not. |
| Empty converter shows a dash | The Hz field is empty or not a positive number. Type a frequency. |
| A4 reference changed on its own | You are signed in and changed it on another device; the setting syncs to the account. Set it again here. |
Nothing plays at all
- Check the device is not muted and the Volume slider is above 0.
- On an iPhone, flip the ring/silent switch to ring.
- Tap a play button once more, then try another tab or app to confirm the device plays sound.
The microphone tuner never starts
- Look for a blocked-microphone icon in the address bar and allow it.
- Close any other app or tab that uses the microphone.
- Reload the page and tap Start listening again.
Thanks for the feedback.