LMRO Whistler Receiver
The Whistler project listens for lightning strikes around the world based on a phenomen which generates electromagnetic waves over a broad spectrum of frequencies, but where the Whistler device itself is designed to listen at 20Khz - a frequency normally considered part of the audio spectrum - it's basically just a Microphone!
Spectrogram - Real time audio stream
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iPhone Audio Stream
The iPhone will only stream the MP3 format (on most phones) so for those less fortunate we have started a Whistler Stream for iPhone. The stream we have been running uses the OGG format which allows timing data to be included. MP3 is a much older encoding method and does not contain multiplexed time data.