https://www.sitkanature.org/wordpress/wp-content/uploads/2008/10/20081024_otter_mystery_call_0147.mp3?_=2River Otter and Mystery Sound: Another clip of river otter chirping in the distance on a windy evening made more interesting by some strange high frequency sounds. I do not remember noticing them when I first went through the recording, but I cannot figure out how they would have been introduced during a simple copy/paste operation. I have included a Spectrogram of the clip to show how the mystery sounds extend out of the frequency range I can easily hear. It seems odd that they go through each channel sequentially, but I am at a loss to explain why that might happen. At this point I am thinking it’s most likely some type of interference, though perhaps it is biological in origin. Download River Otter and Mystery Sound
