SV650.org - SV650 & Gladius 650 Forum - Sound testing: how to?

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- - Sound testing: how to? (http://forums.sv650.org/showthread.php?t=165059)

Brettus

13-04-11 09:33 AM

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.

SUPERSTARDJ01

13-04-11 09:50 AM

Re: Sound testing: how to?

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

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.

Brettus

13-04-11 10:39 AM

Re: Sound testing: how to?

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

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 :)

Brettus

13-04-11 09:00 PM

Re: Sound testing: how to?

Quote:

Originally Posted by mister c (Post 2519490)

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

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?

SUPERSTARDJ01

13-04-11 09:48 PM

Re: Sound testing: how to?

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

andrewsmith

13-04-11 09:53 PM

Re: Sound testing: how to?

Quote:

Originally Posted by SUPERSTARDJ01 (Post 2519790)

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

WHAT!!!
Speak up!:mrgreen:

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

dizzyblonde

13-04-11 09:55 PM

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

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