The engine rotor motor noise of a small RC helicopter. Irregular engine power with many speed ups and slow downs.
Recorded with Zoom H2. Edited with Audacity.
This sound is CC0 but I highly recommend that you include a link to this page when using it, to avoid misunderstandings.
On FLAC and OGG Vorbis audio file formats.
Contact me if you have interest in specific sounds for open source or commercial purpose.
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