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**Liskaspexia** · 08-08-2012, 09:12 PM

Reason I was wondering about height was I've noticed sound attenuates with distance, ie a jet at a few thousand metres is quite loud, whereas a jet at cruising altitude , ~8K, is much quieter so was wondering if there's a height at which the sound becomes inaudible for those on the ground.

Whilst it appeared as overhead it could have been some distance to the west of where I was.

08-08-2012, 09:12 PM	#7
Liskaspexia Join Date Oct 2005 Posts 470 Senior Member	Reason I was wondering about height was I've noticed sound attenuates with distance, ie a jet at a few thousand metres is quite loud, whereas a jet at cruising altitude , ~8K, is much quieter so was wondering if there's a height at which the sound becomes inaudible for those on the ground. Whilst it appeared as overhead it could have been some distance to the west of where I was.
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