Sound testing: how to? - SV650.org

13-04-11, 09:33 AM

I'm just about to swap my exhaust and I've noticed in work we now have a decibelmeter. How should I go about measuring it? I'd guess it's at a certain distance and perhaps angle and at a certain rev count but I don't know what for any of them.

Any help greatly appreciated.

13-04-11, 09:50 AM

I think if it's for a track it's at 6k rpm not sure where to stand though.

Mr Speirs · 13-04-11, 10:13 AM

As far as I remember it's 1m away at a 45 degree angle using a decibelmeter that is A weighted.
Revs need to be 3/4 of redline.

The A weighting of the decibelmeter is important.

13-04-11, 10:39 AM

Cool thanks guys, after a bit of searching I found this from a teeside track day I think it was:

Quote:

All bikes will be noise tested to ensure they are within the permitted level of 101 decibels +/- a bit , this is measured at 1 metre , at an angle of 45 degrees at 5000 RPM.

Sounds in the same ballpark, will check that the dbmeter we got will do A weighted and I'll see what mine come out at.

Purely for a curiousity point of view, I'm not intending to do a track day or anything just yet but would be nice to have a number on it.

mister c · 13-04-11, 03:38 PM

I can tell you that if it's your Akro you're measuring..... It's bloody loud. I thank you

13-04-11, 09:00 PM

Quote:

Originally Posted by mister c

I can tell you that if it's your Akro you're measuring..... It's bloody loud. I thank you

LOL it's all relative to the rev range. It's only offensive when I want it to be. It just happens that's more often in the nicer weather

I'm thinking the street extreme might be a tad louder but I'll have some figures to go by.

andrewsmith · 13-04-11, 09:23 PM

the teesside autodrome measurement spec is correct.

The test will be done at 5500 rpm on the SV.
Done one for Berlin at Croft and that was the test method, and that was a giggleworthy 97dB (the previous 2 tests were 101 and 104)

Whats the setup of your arka?

13-04-11, 09:48 PM

My akras in my tuono are 105dbs on tick over.

andrewsmith · 13-04-11, 09:53 PM

Quote:

Originally Posted by SUPERSTARDJ01

My akras in my tuono are 105dbs on tick over.

WHAT!!!
Speak up!

How f***ing loud is your bike on fully chat

dizzyblonde · 13-04-11, 09:55 PM

lol, well, out of curiosity, I'd be inclined to have a play with a decibelimomeiterthingbob too!

All I need to know is that yer ears bleed whilst wearing earplugs and a helmet, on a pair of Leo's...and that'll do me

Never had that one the SVs with any of the cans..but bleddy hell, that Raptor may as well be hitting you over the head with a lump hammer

13-04-11, 09:33 AM	#1
Brettus Guest Posts: n/a	Sound testing: how to? I'm just about to swap my exhaust and I've noticed in work we now have a decibelmeter. How should I go about measuring it? I'd guess it's at a certain distance and perhaps angle and at a certain rev count but I don't know what for any of them. Any help greatly appreciated.

13-04-11, 09:50 AM	#2
SUPERSTARDJ01 Guest Posts: n/a	Re: Sound testing: how to? I think if it's for a track it's at 6k rpm not sure where to stand though.

13-04-11, 10:13 AM	#3
Mr Speirs Member Mega Poster Join Date: Jul 2008 Location: Northampton Posts: 2,218	Re: Sound testing: how to? As far as I remember it's 1m away at a 45 degree angle using a decibelmeter that is A weighted. Revs need to be 3/4 of redline. The A weighting of the decibelmeter is important. __________________ Smokey Black Burnty 02 - Racetech Smoulderlators + .90kg BBQ Springs, zx10r shockingly toasted, Conti Road Attacks heat up very nicely, R&G Crash Bungs but what f**king use are they, No Colour Matched Hugger, Flame Extenda, Beowulf Titainium Oval Flame Thrower.

13-04-11, 03:38 PM	#5
mister c Member Mega Poster Join Date: Feb 2007 Location: Crewe, Cheshire Posts: 2,326	Re: Sound testing: how to? I can tell you that if it's your Akro you're measuring..... It's bloody loud. I thank you __________________ Flickr: http://www.flickr.com/photos/croozenooze/ Facebook : https://www.facebook.com/colin.hughes.1213?ref=tn_tnmn Yoo Toob https://www.youtube.com/channel/UCjG...eMWUx4Ud2dK-yA

13-04-11, 09:23 PM	#7
andrewsmith Member Mega Poster Join Date: Apr 2010 Location: Newcastle upon Tyne, Just south of salad dodging country Posts: 7,750	Re: Sound testing: how to? the teesside autodrome measurement spec is correct. The test will be done at 5500 rpm on the SV. Done one for Berlin at Croft and that was the test method, and that was a giggleworthy 97dB (the previous 2 tests were 101 and 104) Whats the setup of your arka? __________________ RIP Reeder 20/07/1988 - 21/03/2012. Always missed squire!!! Every year we meet old friends, gain some new ones, lose old ones and you always remember them all. “Live as if you were to die tomorrow. Learn as if you were to live forever.” Mahatma Gandhi

13-04-11, 09:48 PM	#8
SUPERSTARDJ01 Guest Posts: n/a	Re: Sound testing: how to? My akras in my tuono are 105dbs on tick over.

13-04-11, 09:55 PM	#10
dizzyblonde Da Cake Boss Mega Poster Join Date: May 2007 Location: On a flying Horse Posts: 9,992	Re: Sound testing: how to? lol, well, out of curiosity, I'd be inclined to have a play with a decibelimomeiterthingbob too! All I need to know is that yer ears bleed whilst wearing earplugs and a helmet, on a pair of Leo's...and that'll do me Never had that one the SVs with any of the cans..but bleddy hell, that Raptor may as well be hitting you over the head with a lump hammer __________________ Suzy, yellow 2001 SVS. Kitty, V-Raptor 1000, ZZR1400<<its my bike now Pegasus! Hovis 13.8.75-3.10.09 Reeder 20.7.88-21.3.12 Last edited by dizzyblonde; 13-04-11 at 09:56 PM.

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