Bats ambience 1 ISOLATED.wav

This is a different version of 'Bats ambience 1' that has been treated with a hipass filter to reduce everything below 5k or so because 6k is about the lowest pitch produced by the bats.
From a recording made underneath the 'Congress Bridge' in Austin Texas which is home to a large bat colony. Recording and processing chain: AT3031 mics in a NOS pair-->sound devices mixpre-->Microtrack at 48k, 24bit-->highpass filter-->normalization-->dithered to 16bit.