From the recording Other Musics
"Hidden Frequencies" explores ultra/high frequency sound pollution. This pervasive and unheard sonic affects are health and wellbeing. It brings to mind the so-called numbers stations or spy stations a shortwave radio station characterized by broadcasts of formatted numbers, which are believed to be addressed to intelligence officers operating in foreign countries. There is a coded message in this recording.
A special thank you to Diane K. Smith for the reading.
Eastern Red Bat
USID (Ultrasound Identification)
Non-destructive inspection techniques