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Forum: Audio Theory, Setup, and Chat   03-13-2017, 09:16 AM
Replies: 13
Views: 228
Posted By localhost127
care to provide objective measurements that...

care to provide objective measurements that detail the specific modal issue you're experiencing and subsequently how your couches solved them?




what is the purpose of the above "treatment"...
Forum: Audio Theory, Setup, and Chat   03-12-2017, 09:52 AM
Replies: 13
Views: 228
Posted By localhost127
the physical characteristics of the indirect...

the physical characteristics of the indirect (reverberant) sound-field that develops in a Large Acoustical Space such as concert hall is wildly different than that of a Small Acoustical Space...
Forum: Audio Theory, Setup, and Chat   03-12-2017, 09:40 AM
Replies: 13
Views: 228
Posted By localhost127
this statement doesn't make any sense at all. ...

this statement doesn't make any sense at all. small room acoustics deals with localized behavior - thus the boundaries incident of the applicable signals one may wish to attenuate/modify are based...
Forum: Audio Theory, Setup, and Chat   02-09-2017, 02:41 PM
Replies: 79
Views: 1,527
Posted By localhost127
negative. the behavior (read: limitations) of a...

negative. the behavior (read: limitations) of a 1" porous absorber (regardless of material) being non-broadband in nature is well understood.



i believe the term used was "erroneous" - and...
Forum: Audio Theory, Setup, and Chat   02-09-2017, 04:40 AM
Replies: 79
Views: 1,527
Posted By localhost127
was meant to imply what is directly stated in the...

was meant to imply what is directly stated in the OP: "We also ripped out the floor to ceiling 1" thick absorption on the front wall"

regardless, 1" of any porous material is going to be...
Forum: Audio Theory, Setup, and Chat   02-09-2017, 04:21 AM
Replies: 79
Views: 1,527
Posted By localhost127
completely false. subjective sampling is evident...

completely false. subjective sampling is evident in the OP ("it sounds better now!") once the user removed the thin "wall to ceiling" carpet. objective data proves thin porous absorbers such as 1"...
Forum: Audio Theory, Setup, and Chat   02-06-2017, 09:36 AM
Replies: 79
Views: 1,527
Posted By localhost127
the first issue is that your original "treatment"...

the first issue is that your original "treatment" of the space was fundamentally erroneous from the start. you over-applied thin porous absorbers (1" thickness) which are not effective to the...
Forum: Audio Theory, Setup, and Chat   02-06-2017, 09:13 AM
Replies: 79
Views: 1,527
Posted By localhost127
too much of a bad thing, actually - as he...

too much of a bad thing, actually - as he over-applied non-broadband porous absorbers of a mere 1" thickness.
Forum: Audio Theory, Setup, and Chat   01-31-2017, 01:34 PM
Replies: 11
Views: 318
Posted By localhost127
room modes include both nodes and anti-nodes - so...

room modes include both nodes and anti-nodes - so it makes no sense to globally imply a boundary polar null (eg, SBIR) is more of a concern than a node. the dominate issue(s) will vary with...
Forum: Audio Theory, Setup, and Chat   12-04-2016, 04:11 PM
Replies: 55
Views: 1,059
Posted By localhost127
ive yet to see someone so loudly proclaim their...

ive yet to see someone so loudly proclaim their ignorance regarding that which they are not aware.


if you're actually interested on the subject - and while numerous books exist on the subject -...
Forum: Audio Theory, Setup, and Chat   12-04-2016, 03:30 PM
Replies: 55
Views: 1,059
Posted By localhost127
"impulse responses" for LF/modal region in small...

"impulse responses" for LF/modal region in small acoustical spaces? lol ... now you're just digging your hole deeper.


i can't tell if you are being sarcastic or simply ignorant. are you...
Forum: Audio Theory, Setup, and Chat   12-04-2016, 02:41 PM
Replies: 55
Views: 1,059
Posted By localhost127
says the user making global, catch-all claims...

says the user making global, catch-all claims that fundamentally ignore the last 5+ decades of acoustics:



utterly false.



utterly false.
Forum: Audio Theory, Setup, and Chat   12-04-2016, 04:39 AM
Replies: 55
Views: 1,059
Posted By localhost127
while there is clearly real-estate constraints...

while there is clearly real-estate constraints regarding the OP's ceiling, to imply a "half inch of rigid fiberglass would suffice" is flat out wrong. typical loudspeaker exhibits little HF content...
Forum: Audio Theory, Setup, and Chat   12-04-2016, 04:32 AM
Replies: 55
Views: 1,059
Posted By localhost127
flat out wrong. to imply one cannot design...

flat out wrong. to imply one cannot design either a porous or resonant based absorber to address sub-100hz issues just illustrates ignorance on the subject of acoustics.



it's not impossible...
Forum: 2-Channel Audio   06-27-2016, 01:59 PM
Replies: 9
Views: 304
Posted By localhost127
source a harman hk3490 off ebay - should be able...

source a harman hk3490 off ebay - should be able to find used/excellent condition for $200-250.
Forum: Audio Theory, Setup, and Chat   06-26-2016, 07:33 AM
Replies: 9
Views: 168
Posted By localhost127
Extruded Polystyrene Foam (XPS) is sufficiently...

Extruded Polystyrene Foam (XPS) is sufficiently dense as to be reflective to the design frequency of the initial requirements (6" depth).

you can source 8' x 4' x [1" or 2" thickness] at almost...
Forum: Audio Theory, Setup, and Chat   02-09-2016, 05:10 PM
Replies: 127
Views: 3,476
Posted By localhost127
frequency domain isn't the correct "perspective"...

frequency domain isn't the correct "perspective" of which to view when the context is indirect specular reflections and their subsequent characteristics: time arrival delta with respect to direct...
Forum: Audio Theory, Setup, and Chat   02-08-2016, 07:08 PM
Replies: 127
Views: 3,476
Posted By localhost127
what gives you the impression "recording spaces"...

what gives you the impression "recording spaces" (you seem to be confusing tracking rooms to that of mix/mastering rooms) deal with "few to no reflections"?

that's completely opposite of a...
Forum: Audio Theory, Setup, and Chat   01-19-2016, 01:51 PM
Replies: 27
Views: 508
Posted By localhost127
what's the purpose of this thick textured...

what's the purpose of this thick textured wallpaper? are you implying it provides some level of diffusion?
Forum: Speakers   01-18-2016, 03:56 PM
Replies: 1,742
Views: 56,843
Posted By localhost127
ah, but in real acoustics it is agreed upon -...

ah, but in real acoustics it is agreed upon - just not the "mickey mouse" acoustics world ethan lives in (who is not an acoustician).
anyone remotely versed in acoustics will see the errors in that...
Forum: Speakers   01-18-2016, 02:56 PM
Replies: 1,742
Views: 56,843
Posted By localhost127
in small residential sized rooms, no. RT60 is...

in small residential sized rooms, no. RT60 is only relevant in a statistically random-incidence reverberant soundfield (read: Large Acoustical Space).
Forum: Audio Theory, Setup, and Chat   01-16-2016, 02:36 PM
Replies: 10
Views: 251
Posted By localhost127
this commentary doesn't make any sense at all. ...

this commentary doesn't make any sense at all. an object must be large with respect to wavelength in order to be "seen". for reflection phase grating diffusers, depth plays a critical role as it...
Forum: Audio Theory, Setup, and Chat   12-09-2015, 06:21 PM
Replies: 16
Views: 339
Posted By localhost127
how so? the irregularities of the fireplace...

how so? the irregularities of the fireplace appear of but 1" depth - far too small to be seen by relevant wavelengths in order to be considered effective diffusion.
Forum: Audio Theory, Setup, and Chat   10-13-2015, 10:34 AM
Replies: 5
Views: 393
Posted By localhost127
that's not a true PRD (12x12); it's an array of...

that's not a true PRD (12x12); it's an array of many smaller PRDs.

a PRD row X collumn should be = (Prime Number - 1).
a PRD based on prime157 would be an array 12x13.



use a proper PRD...
Forum: Audio Theory, Setup, and Chat   10-06-2015, 02:26 PM
Replies: 2
Views: 134
Posted By localhost127
how much of that boundary to you plan to cover to...

how much of that boundary to you plan to cover to meet your indirect sound-field requirements?

have you considered the decrease in construction time&effort for the larger well width (at the...
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