gunshot noise

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

KBB - 08 Sep 2006 17:22 GMT

There's a nearby shooting range that's proposed some changes, and I'd
like to figure out what those changes mean to me. I understand that
gun noise is directional and I'd like to get data on how the sound
pressure level varies with orientation. Are there any references out
there? I'm familiar with acoustics, so please don't be too afraid to
get technical.

Specifically, I'm trying to find data for typical 12 GA shotgun peak
sound pressure levels. I believe the directionality profile must
depend somewhat on the gun, but some representative data would be nice.

I have found a single chart online, but it was for a European military
rifle, which doesn't fit my needs.

Thanks in advance!

Regards,
K. B.

Reply to this Message

Don Pearce - 08 Sep 2006 17:24 GMT

>There's a nearby shooting range that's proposed some changes, and I'd
>like to figure out what those changes mean to me. I understand that
[quoted text clipped - 14 lines]
>Regards,
>K. B.

Forget the complication - just assume worst direction and work with
that. Gun manufacturers should have noise data for all their models.
Again, grab the worst and go with that.

d

Signature

Pearce Consulting
http://www.pearce.uk.com

Reply to this Message

KBB - 08 Sep 2006 19:22 GMT

Thanks Don.

Worst was directly in front of the gun, from the one chart I've seen.

One of the changes proposed is reorienting the shooting gallery. All
other things being equal, I should be able to estimate the impact
reorientation will have given sound field measurements. This is the
tack I feel will be most effective in any possible future argument.

Thanks Again,
K. B.

> >There's a nearby shooting range that's proposed some changes, and I'd
> >like to figure out what those changes mean to me. I understand that
[quoted text clipped - 20 lines]
>
> d

Reply to this Message

Kari Pesonen - 11 Sep 2006 08:43 GMT

> There's a nearby shooting range that's proposed some changes, and I'd
> like to figure out what those changes mean to me. I understand that
[quoted text clipped - 14 lines]
> Regards,
> K. B.

Here you some general information:
http://www.nordicinnovation.net/nordtestfiler/acou099.pdf

ISO has corresponding revised ("upgraded") prediction methods:
http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=30576&ICS1
=95&ICS2=20&ICS3=
http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=30577&ICS1
=97&ICS2=220&ICS3=10
http://www.iso.ch/iso/en/CatalogueDetailPage.CatalogueDetail?CSNUMBER=30579&ICS1
=95&ICS2=20&ICS3=

In many cases ranges are surrounded by forest and other scattering,
reflecting,
and diffracting obstacles. These may change directionality, as well as time
and frequency
domain signal (muzzle blast, projectile sound, whole range) significantly
from that
one observed in flat, open terrain.

Kari Pesonen

Reply to this Message

Natural Science Forum / Physics / Acoustics / September 2006

gunshot noise