Short answer: This isn’t a documented/known behavior in our Sound Effects docs or Help Center. I can’t confirm a specific cause from official sources. Here are the checks that are supported by our documentation:
Check the file format you’re playing. Sound effects are delivered as MP3 by default; for non-looping effects you can download WAV at 48 kHz. Test the WAV export to see if the issue persists. (elevenlabs.io)
If you’re trying to loop ambience, use the looping option—looping effects are designed to play without a perceptible start/end point. (elevenlabs.io)
Verify your playback pipeline handles the exported sample rates and formats listed in our supported formats article (e.g., MP3 and WAV, plus sample-rate details). (help.elevenlabs.io)
If the static occurs both in our web preview and after download, please share a couple of example files with Support so we can investigate. You can contact us via the Help Center form. (help.elevenlabs.io)
If you can, let me know:
Does it happen in the ElevenLabs preview, or only after download?
Only after download and it doesn't happen with all generations, just specific prompt (monster foot thud/stomp sounds), both MP3 and Wav downloads, looping disabled
quartz elm
abstract solstice