These sounds are from the Pratham cubesat, a miniature, cuboid satellite built by students at the Indian Institute of Technology (IIT).
The signals from Pratham were picked up by Theo Brochant De Viliers (pictured) at a ground station based at UCL's Mullard Space Science Laboratory (MSSL). MSSL and the IIT students have agreed to keep a watch out for each other's cubesats.
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