panels advice

[RICK FITZPATRICK]

it would resonate at a higher frequency, even if it were twice as long.

HUH? WHAT would resonate? Resistance absorption materials do NOT resonate nor absorb by resonance. They absorb by resistance to molecule movement within the material, which creates friction, which translates to energy conversion to heat. Don't count on heating the house though Different absorption coefficients at different frequencies are due to 1/4 wavelength/incident angle/diffraction principles. Using absorption materials in the corners increase Low frequency absorption due to low frequency wavelengths approaching the room dimensions terminating in the corners(fluctuating pressure zones), and the variable depth of the absorber at corners. Impedence mismatch at the edges contribute to additional absorption benifits because of the "edge effect", REGARDLESS if the edges are exposed. At least this is my understanding. Should an expert disagree, I'm all ears.
fitZ

 

[FALKEN]

HUH? WHAT would resonate? Resistance absorption materials do NOT resonate nor absorb by resonance. They absorb by resistance to molecule movement within the material, which creates friction, which translates to energy conversion to heat. Don't count on heating the house though Different absorption coefficients at different frequencies are due to 1/4 wavelength/incident angle/diffraction principles. Using absorption materials in the corners increase Low frequency absorption due to low frequency wavelengths approaching the room dimensions terminating in the corners(fluctuating pressure zones), and the variable depth of the absorber at corners. Impedence mismatch at the edges contribute to additional absorption benifits because of the "edge effect", REGARDLESS if the edges are exposed. At least this is my understanding. Should an expert disagree, I'm all ears.
fitZ

rick what the hell is this

please explain in english how this relates to my dilemma.

thanks.


btw i think it is the FRK paper that resonates.

 

[RICK FITZPATRICK]

please explain in english how this relates to my dilemma.

I was only responding to this:

farview wrote

it would resonate at a higher frequency, even if it were twice as long.

Maybe I misunderstood the reference.

btw i think it is the FRK paper that resonates.

Maybe you can illustrate its absorption contribution by virtue of resonace, in Sabines. I'm always open to new information. As to the use of wider panels, let me illustrate something for you though. Which absorbs better. Eight square foot of open window, or 16 square feet of open window. Unless I don't understand something here, absorpers are NO different. More square footage translates to more SABINES of absorption. However, WIDTH in the corners translates to lowering the bandwidth of absorption as wider translates to DEPTH/1/4 wavelength principles..no? BTW, I am NOT speaking as an expert. Only asking others.
As to your "delima", in english: For what its worth, you have NO delima. Only a set of decisions. What you base your decisions on are dictated by priorities and consequences(as in frying pan to the head).
Delimas are unsolvable (as in "run out of gas"=no choice but to walk). At least thats how I look at it Falken. However, a grain of salt goes well with my view.
fitZ

 

[Robert D]

HUH? WHAT would resonate? Resistance absorption materials do NOT resonate nor absorb by resonance. They absorb by resistance to molecule movement within the material, which creates friction, which translates to energy conversion to heat. Don't count on heating the house though Different absorption coefficients at different frequencies are due to 1/4 wavelength/incident angle/diffraction principles. Using absorption materials in the corners increase Low frequency absorption due to low frequency wavelengths approaching the room dimensions terminating in the corners(fluctuating pressure zones), and the variable depth of the absorber at corners. Impedence mismatch at the edges contribute to additional absorption benifits because of the "edge effect", REGARDLESS if the edges are exposed. At least this is my understanding. Should an expert disagree, I'm all ears.
fitZ

I believe he's talking about a panel absorber. The wood panel resonates, and the insulation behind it absorbs the energy transferred at the resonant freq.

-RD

 

[FALKEN]

ok morpheus.

I think then we are all in agreeance that it is the spacing that makes the most difference here, as far as bass trap absorption is concerned. and a 2' gap will make for better bass absorpotion than a 1' gap.

my question was that based on the coeffecients on a particular website, my design should still do damn good. but i cant really tell below 125 Hz based on that data. and the data almost seems to be not completely accurate. maybe it is.

and for my purposes it is a dilemma because i am probably going to end up doing nothing and continue to suspect my room to be the reason for poor quality recordings.

could somebody please go listen to my clips and tell me if they *hear* any problems?

 

[RICK FITZPATRICK]

could somebody please go listen to my clips and tell me if they *hear* any problems?

How would you know if its THEIR room or yours? Their room may have many problems too!!
fitZ

 

[FALKEN]

aw crap.

well someone in there who monitors on computer speakers just told me i need treatment. heh.

 

[c7sus]

Wow. What a lot of mental masturbation!

Just buy some 705 already and treat the fuckin corners.

$5 says your girlfriend dresses you too because you can't pick out a pair of pants and a shirt.

 

[FALKEN]

you're right. end of thread.

still you guys should listen to the third mp3 I listed. I think I captured the "modes" really well.