Acoustics Crash Course - Modes

TrevCircleStudios · #1 (**permalink**) 9th March 2009 , 10:12 PM

Just came across this. Useful reading:

http://www.marktaw.com/recording/Aco...urse1-Mod.html

sureno · #2 (**permalink**) 9th March 2009 , 10:16 PM

very nice, will give this an in depth read tomorrow

terminal3 · #3 (**permalink**) 9th March 2009 , 10:18 PM

Phew, for a minute there I thought this was going to be about scales and intervals. BOOORING!

TrevCircleStudios · #4 (**permalink**) 9th March 2009 , 10:32 PM

Quote:

Originally Posted by terminal3

Phew, for a minute there I thought this was going to be about scales and intervals. BOOORING!

Nah. Mu-uch more exciting than that!

TrevCircleStudios · #5 (**permalink**) 9th March 2009 , 10:37 PM

Here's part 2:

http://www.marktaw.com/recording/Aco...urse2-Ref.html

FrankGIK · #6 (**permalink**) 11th March 2009 , 05:50 PM

That's really cool Trev. Good basic information.

Frank

TrevCircleStudios · #7 (**permalink**) 29th March 2009 , 08:16 PM

and here's a useful room mode calculator:

http://www.marktaw.com/recording/Aco...WaveCalcu.html

FrankGIK · #8 (**permalink**) 30th March 2009 , 12:42 PM

Room mode calculators are great, but they're usually most useful *after* you've treated the room, oddly enough. The reason is that, in a pre-existing space, the solution is the same no matter where your modes are. If you have a 13'x15'x8' room (*very* typical home room size), your modal issues are completely predictable...you'll need a ton of bass trapping in all the usual places, so it's best to just knock that out, then get the calculator, measurement mic and measuring software out after. Assuming that your listening position is set up right, you'll then be able to pinpoint the real problem areas that remain...maybe you'll still have too much ringing at 80Hz or a nasty comb filter at 2-4Khz. Armed with that knowledge you can spot treat.

If you do things that way you'll spend less and be more effective.

Frank

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#1 (permalink) 9th March 2009 , 10:12 PM
TrevCircleStudios Mic Check 1! Join Date: Aug 2008 Location: England Posts: 2,094	Acoustics Crash Course - Modes Just came across this. Useful reading: http://www.marktaw.com/recording/Aco...urse1-Mod.html ______________________________ You can't polish a turd! (unless it's a jettsetty and urbane one!)
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#2 (permalink) 9th March 2009 , 10:16 PM
sureno Forum Idol Join Date: Jul 2008 Location: west london depot Posts: 7,599	very nice, will give this an in depth read tomorrow ______________________________ Where is the chase and how do I cut to it?!? WWW.SURENO.CO.UK www.myspace.com/djsureno http://twitter.com/djsureno
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#5 (permalink) 9th March 2009 , 10:37 PM
TrevCircleStudios Mic Check 1! Join Date: Aug 2008 Location: England Posts: 2,094	Here's part 2: http://www.marktaw.com/recording/Aco...urse2-Ref.html ______________________________ You can't polish a turd! (unless it's a jettsetty and urbane one!)
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#6 (permalink) 11th March 2009 , 05:50 PM
FrankGIK Super Member Join Date: Aug 2008 Posts: 312	That's really cool Trev. Good basic information. Frank ______________________________ Frank Oesterheld GIK Acoustics GIK Bradford Now Open! www.gikacoustics.com (+44) 020 7558 8976 (UK)
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#3 (permalink) 9th March 2009 , 10:18 PM
terminal3 Sound Guru Join Date: Jul 2008 Location: London Posts: 2,176	Phew, for a minute there I thought this was going to be about scales and intervals. BOOORING!
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#7 (permalink) 29th March 2009 , 08:16 PM
TrevCircleStudios Mic Check 1! Join Date: Aug 2008 Location: England Posts: 2,094	and here's a useful room mode calculator: http://www.marktaw.com/recording/Aco...WaveCalcu.html ______________________________ You can't polish a turd! (unless it's a jettsetty and urbane one!)
Offline

#8 (permalink) 30th March 2009 , 12:42 PM
FrankGIK Super Member Join Date: Aug 2008 Posts: 312	Room mode calculators are great, but they're usually most useful after you've treated the room, oddly enough. The reason is that, in a pre-existing space, the solution is the same no matter where your modes are. If you have a 13'x15'x8' room (very typical home room size), your modal issues are completely predictable...you'll need a ton of bass trapping in all the usual places, so it's best to just knock that out, then get the calculator, measurement mic and measuring software out after. Assuming that your listening position is set up right, you'll then be able to pinpoint the real problem areas that remain...maybe you'll still have too much ringing at 80Hz or a nasty comb filter at 2-4Khz. Armed with that knowledge you can spot treat. If you do things that way you'll spend less and be more effective. Frank ______________________________ Frank Oesterheld GIK Acoustics GIK Bradford Now Open! www.gikacoustics.com (+44) 020 7558 8976 (UK)
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