A video about a HORN!

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Tom Smit
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A video about a HORN!

#1 Post by Tom Smit » Fri Nov 30, 2018 12:58 am

I thought it was interesting enough to share (someone shared it with me)
https://www.youtube.com/watch?v=pFEB0ch ... ture=share
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Strange Kevin
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Re: A video about a HORN!

#2 Post by Strange Kevin » Fri Nov 30, 2018 3:10 am

Haha, I just wached that earlier today.
I like be bit near the end where they test the speed of sound.
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Bill Fitzmaurice
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Re: A video about a HORN!

#3 Post by Bill Fitzmaurice » Fri Nov 30, 2018 7:57 am

Cute, but he went to a lot of trouble confirming what's been known since Edison made this:

Image

Or since Joshua brought down the walls of Jericho:

Image

BTW, not the world's largest horn, by a long shot:

Image

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Tom Smit
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Re: A video about a HORN!

#4 Post by Tom Smit » Fri Nov 30, 2018 11:30 am

Oh, I know. But still, I think it's interesting, especially, like Strange Kevin said, the test of the speed of sound.
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Bill Fitzmaurice
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Re: A video about a HORN!

#5 Post by Bill Fitzmaurice » Fri Nov 30, 2018 11:52 am

We see examples of the speed of sound all the time. The most common one is when you count how many seconds elapse between seeing a lightning bolt and hearing the thunder to approximate the distance to the lightning hit. Each five seconds is about a mile. In our profession time aligning the PA to the backline amps is something we deal with a lot.

Signalsdrone
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Re: A video about a HORN!

#6 Post by Signalsdrone » Fri Nov 30, 2018 3:15 pm

Cool video! They made the explanation of how horns work very easy for a layman to understand.

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Re: A video about a HORN!

#7 Post by CoronaOperator » Fri Nov 30, 2018 5:42 pm

The video also reasonably explains what sound is - just wiggly air that wiggles your eardrums. Lots of layman think that speakers need to move lots of air when all they do is wiggle it back and forth a little bit and it's the pressure wave that carries the sound energy with the air barely moving at all.
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Bill Fitzmaurice
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Re: A video about a HORN!

#8 Post by Bill Fitzmaurice » Sat Dec 01, 2018 9:02 am

Tom Smit wrote:
Sat Dec 01, 2018 1:30 am
I agree. However, I could never really figure out the distance of the lightning bolt from me. In contrast, in the video, we are told how far away the two parties are, and we can see/hear the difference of when the horn was sounded, and when the others actually heard itI could never really figure out the distance of the lightning bolt from me.
Count the seconds from when you see it to when you hear it. Each second equals about 340 meters.

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Re: A video about a HORN!

#9 Post by Rich4349 » Sat Dec 01, 2018 3:25 pm

It would have been more interesting if they would have used a full (or even wide) range driver, given the lack of harmonics removing folds in the straight horn. Or broadcasted a lower frequency.

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