Recording Setup
Last updated: October 16, 2026
Short version: don't record over Bluetooth.
Use wired headphones, earbuds with a cable, or an audio interface instead. This isn't a Gemstar limitation — it's true of every recording app, including BandLab, which tells users the same thing in its own help docs.
Bluetooth headphones and earbuds are great for listening, but they cause two separate problems the moment you try to record vocals through them:
Bluetooth audio has to be compressed, transmitted over radio, and decoded on the other end — that takes time. Typical Bluetooth latency runs anywhere from about 34ms up to 300ms, compared to roughly 5–10ms for a wired connection. That delay is enough to throw your vocal noticeably out of time with the beat, especially the longer you record. There's no setting that fixes this — it's a property of Bluetooth itself.
Most Bluetooth headsets share one small chip for both the speaker and the mic, with no real hardware echo cancellation between them. When Gemstar plays your own voice back to you while you're tracking (so you can hear yourself), some of that sound can leak straight back into the Bluetooth mic sitting right next to the speaker — and that leaked audio ends up audible in your actual recording. This is a hardware limitation of the headset itself, not something a website can filter out after the fact.
If you have to use Bluetooth:
Fully charge both devices, keep your phone/computer and headphones close together, turn off Power Saver mode, and restart both before recording. If you hear bleed-through, turn off "Hear yourself while tracking" in the record panel — you'll lose the live monitor, but your take will be clean.
Recording Setup
Wired headphones (plugged into your phone, laptop, or an interface) and real audio interfaces give you a direct electrical connection with no compression and no radio delay — output and mic input stay completely separate paths, so there's nothing to leak and nothing to desync.
If you're hearing pops, crackle, or dropouts specifically through an interface, it's usually a buffer-size or sample-rate setting on the interface or your computer's sound control panel, not Gemstar itself — check your interface's control panel (or your OS sound settings) for a buffer size option and try a larger one if you're getting glitches, or a smaller one if you need less delay and your system can handle it.
Check your interface's sample rate, too.
A lot of interfaces default to (or get accidentally switched to) a very high rate like 176.4kHz or 192kHz — your browser's audio engine expects 44.1kHz or 48kHz, so a mismatch forces constant real-time resampling, which is a common cause of popping/crackle that has nothing to do with buffer size.
On Mac: open Audio MIDI Setup (Spotlight search for it), select your interface in the left list, and check the "Format" dropdown.
On Windows: right-click the speaker icon → Sound settings → your interface → Properties → Advanced, and check the default format.
Set it to 44100 Hz or 48000 Hz, whichever your interface supports.
Recording Setup
Gemstar's record panel has a "Hear yourself while tracking" toggle, on by default, that plays your live mic signal back to your headphones while you record — so you can actually hear yourself instead of singing into silence. This is headphones-only: if you're on speakers, leave it off, or the mic will pick the speaker output back up and feed back.
There's a separate, optional "Add a touch of reverb to your monitor" toggle, off by default, that adds a light reverb just to what you hear while tracking — it never touches your actual recorded take either way, so it's purely about what's more comfortable to sing against.
Recording Setup
A few things to try if your recordings sound staticky, poppy, or like they're "fighting to play through":
Long playback sessions getting staticky on Safari through an external interface?
If it's specifically long, continuous playback (not a loop, not recording) that starts to crackle while you're on Safari with an external audio interface (like a Focusrite) plugged in, that's a known Safari + external-interface limitation, not a Gemstar bug. Switching to Chrome, or just playing through your device's built-in speakers, clears it right up.
Recording Setup
Gemstar runs entirely in your browser using real-time audio processing, which is demanding work. For the smoothest experience:
Older or lower-powered devices (older tablets especially) may feel sluggish during recording or playback simply because they don't have the processing headroom for real-time audio — closing other apps/tabs helps, but a newer device will always feel noticeably smoother.