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Old 16th January 2005, 12:24 PM   #1
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Default rta tools for everyman

perhaps you've all seen these but i'll put 'em in one place for ya.

first up: third octave signal source. you do own a cd player?

http://www.rivesaudio.com/software/TestCD.html

second: microphone/meter combo.

http://www.radioshack.com/product.as...t%5Fid=33-4050

third: a hunka hunka graph paper, if you prefer semi-log to the stuff they have on the rivesaudio website for dl. i do. it makes my graph look like one of those fancy printouts, and gives my little elbow-grease measurements an air of authority

http://www.tubesville.com/audiograph.JPG

you supply the pencil.

never give away drivers to see these somewhat useful measurements again. please remember to trust ears, instincts, and sense of fabulousness above all, my dahlings.

wanna model some BSC filters or something? oh, ok.

Instant Crossover Prototyping

i'd hold off on getting the better soundcard for now, since a new version of the software is coming soon (haha) with some hipper soundcard compatibilites. this one is working for me:

http://www.jr.com/JRProductPage.process?Product=2013347

i'm hoping the new version of the software will do 1st order above 8k. meanwhile, the current version is quite useful for some things (see thread and driver forum).

ps. i have no affiliation with any of the above, commercial or non-commercial.
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Old 16th January 2005, 12:40 PM   #2
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Thanks, I have no immediate requirement (although the double log paper is neat for everyday use), but it is always interesting to be able to get the state of the art at a glance.

Jan Didden
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Old 16th January 2005, 01:14 PM   #3
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Quote:
Originally posted by janneman
the double log paper is neat for everyday use
thanks. i made it myself with this (freeware):

http://www.web-ee.com/Downloads/graph_paper.htm
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Old 16th January 2005, 02:07 PM   #4
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Default Re: rta tools for everyman


Looks handy. I wonder if that CD would work with my RS 33-2050.

Gio.
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Old 16th January 2005, 02:13 PM   #5
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Default Re: Re: rta tools for everyman

Quote:
Originally posted by gmilitano



Looks handy. I wonder if that CD would work with my RS 33-2050.

Gio.
check it yo:

http://www.audioholics.com/techtips/...alibration.php
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Old 16th January 2005, 02:18 PM   #6
adason is offline adason  United States
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hi blackie
i found this one particularly useful
http://www.stryke.com/basszone/
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Old 16th January 2005, 02:34 PM   #7
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Quote:
Originally posted by adason
hi blackie
i found this one particularly useful
http://www.stryke.com/basszone/
note that this one requires different measurement equipment.

the rivesaudio is compensated to produce a flat curve on the rat shack meter which is NOT flat...
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Old 16th January 2005, 02:45 PM   #8
adason is offline adason  United States
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agreed, radio shack spl meter is not flat
btw i have it and modified it for much better response
http://www.gti.net/wallin/rsmeter.htm
those who dont want to modified it here is correction
http://www.users.bigpond.com/bcollis...orrections.htm
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Old 16th January 2005, 02:48 PM   #9
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Quote:
Originally posted by adason
agreed, radio shack spl meter is not flat
btw i have it and modified it for much better response
http://www.gti.net/wallin/rsmeter.htm
those who dont want to modified it here is correction
http://www.users.bigpond.com/bcollis...orrections.htm
excellent!

i have used that capsule to make recording mics.

AWESOME...(for some things hehe)
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Old 16th January 2005, 02:59 PM   #10
adason is offline adason  United States
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to make things right, those are not mine modifications!
i just applied them
i have both, analog and digital spl meter
they in their commercial form are terrible on bass accuracy,
rolloffs due to lousy capacitor choices
both can be improved dramaticaly for capsule is practicaly flat
when it comes to the hights, analog is better and goes further due to better electronics
digital wil never go all the way up due to poor electronics
after modification they are both very accurate for most critical 300-3000

btw i use behringer ECM 8000 reference condenser with behringer ultra curve for extremely precise measurement

but at the end i do tailor the eq curve to my likeing anyway
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