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Sound propagation +audio files
Old 6th May 2018
  #1
Here for the gear
 
Mysticman's Avatar
Sound propagation +audio files

Hello there!
Here is my a little experiment dedicated to sound changes at the distance.
Perhaps you will be interested in this.

YouTube
Attached Thumbnails
Sound propagation +audio files-experiment.jpg  
Old 6th May 2018
  #2
Lives for gear
Sure! So long as your setup is far enough from houses or other surfaces for slap, this should be pretty accurate. Was the setup precise enough (and in a quiet enough environment) that you could measure HF droop from air friction? It would be very tiny at that apparent distance.
Old 6th May 2018
  #3
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Mysticman's Avatar
Quote:
Originally Posted by Jay Rose View Post
Was the setup precise enough (and in a quiet enough environment).
Yes, there was very quiet. Especially in winter. Unfortunately in the summer there were too many birds and I had to rerecord some sounds a few times. But you can be sure the sounds weren't affected by any extraneous noise.
Old 6th May 2018
  #4
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I’m a bit curious. What was your goal with this exercise?

Speed of sound and how it changes according to temperature is of course very well known.
Since you didn’t do recordings using exactly the same mics Both times it’s liklely that the difference in HF response between the two mics will be as significant or more than the HF damping caused by the change in temperature.
And since how temp affects speed of sound is also well known that doesn’t help much either.

So basically we are down to how the frequency response curve changes at a distance.

But how that actually changes is also well known.

So basically we are down to listening to the sound files as a reference...

I just hate to sound negative, but I really don’t get the usefulness here. Am I missing something?
Old 6th May 2018
  #5
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Quote:
Originally Posted by ErikG View Post
I’m a bit curious. What was your goal with this exercise?
Don't consider this experiment so serious. It's not something like this Engineering Acoustics/Outdoor Sound Propagation - Wikibooks, open books for an open world

I do really understand all the difficulties of real measurements.
I just wanted to make the real sound files and analyze them later in a relaxed atmosphere. It was my main purpose.

I just share my result with community.
Old 6th May 2018
  #6
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Sorry. I probably should just have kept my trap closed. I didn’t mean to sound like a awful person. But I’m sure I did.

I should have stopped at that first sentence. It is so easy to come across like a d*uche when writing at times, i didn’t intend to but still.
Old 6th May 2018
  #7
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Quote:
Originally Posted by ErikG View Post
.
It's ok!
I know my files might be not so useful. I simply recorded this to have some real sounds and to take a close look at frequency changes.
Maybe someone will find it useful.
Thank you for comment!
Old 25th May 2019
  #8
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Mysticman's Avatar
Archive with audio files was a little updated.
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