Last week I was walking around outside and passed an AT&T communications cabinet and noticed ever so faintly that it was making this beautifully harmonic ambient noise. I am guess it is from the A/C inside passing through some of the vents. I tried recording a snippet with my iPhone.
If this direct link doesn't work you can listen to an embedded version on my blog.
https://phaven-prod.s3.amazonaws.com...om_Cabinet.m4a
http://blog.matthewsupert.me/ambient-telecom-cabinet
If this direct link doesn't work you can listen to an embedded version on my blog.
https://phaven-prod.s3.amazonaws.com...om_Cabinet.m4a
http://blog.matthewsupert.me/ambient-telecom-cabinet
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