When Silence is what is out of range

This idea is much like 'Does a tree fall in the woods, even if you can not hear it? But until today's CBS Sunday Morning Fast Draw - I only thought of the tree sound as out of range because it is too far away. I did not consider the unheard in a broader range like some silence is by design, some by choice and some by consequence. The Fast Draw Team of Mitch Butler and Josh Landis focused on frequencies designed by Nature not to be humanly heard. The story reminded me of special sound places on the Internet I tagged in 2006: Biosonar and soundtoys. Since 2006 these locations have been part of my silence and that of others with no updates since 2001 and 2006 respectively. I also flashed on my 2004 awareness I2 concerts with musicians sounds coming together from different locations concurrently where silences are being broken still . Then my memory leaped back to then introduction to U2 as a piece of broken record that somehow found its way to my backyard most likely out a car window as folks younger than me challenged the relevance of the 1983 song about 1972. So Reach me, I know I'm not a hopeless case - let me find what is now silent to experience A Beautiful Day, daily.