Undefined sound effects

Free CC0 undefined sound effects for games, apps, videos, and podcasts. 1 sound.

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Most downloaded undefined sounds

Deep Male Mumbling
Man with deep voice mumbling indistinctly and repeatedly·comical, funny
0:32

Related

comical12funny55male36man16

Lots of Sounds API

Get undefined sounds from code

Search the full CC0 catalog from your app, game or AI agent with the REST API or the MCP server.

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curl
curl -G https://api.lotsofsounds.com/api/v1/sounds \
  -H "x-api-key: $LOS_API_KEY" \
  --data-urlencode "tags=undefined" \
  --data-urlencode "limit=10"

Questions

What are undefined sounds used for?
Undefined sounds are commonly used in apps, games, videos, podcasts, and interactive media projects.
Can I use these sounds commercially?
Yes. Every sound is CC0: free for personal and commercial use, with no attribution required. A credit link to lotsofsounds.com is appreciated but optional.
How do I download a sound?
Open any sound to preview it for free. Sign in to a Lots of Sounds account to download MP3 files.

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