Search found 12 matches

by DanDan
Wed, 2019-Oct-30, 13:28
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Small mixing room acoustic treatment
Replies: 9
Views: 28426
Ireland

Location Location Location

I would encourage really playing around with speaker and listener positions. For sure try the speakers almost touching the Front Wall ( I often use masking tape to prevent scratching, that close!) Play with width. Let's see if the frequency of that null changes with distance to the side wall. Would ...
by DanDan
Mon, 2019-Oct-28, 22:17
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Small mixing room acoustic treatment
Replies: 9
Views: 28426
Ireland

Re: Small mixing room acoustic treatment

The results look pretty good to me. Even your Topt is fairly close to EBU recommendations. Those pesky LF dips are always there to try our patience. Part of it is our desire for symmetry, plus the speaker is often half height, so many central or equal distance null whammies there all complicit. I wo...
by DanDan
Sun, 2019-Oct-27, 00:56
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Predictive Acoustics: Applying the Science
Replies: 8
Views: 26154
Ireland

Re: Predictive Acoustics: Applying the Science

Early days perhaps. I use Altiverb all the time. Over time it has included extra tweaks to alter the parameters of the sample in use. It still sounds utterly 'real' even if one stretches the issue. I guess that suggests that virtual modelling is probably very possible. Particularly with a new build ...
by DanDan
Sat, 2019-Oct-26, 17:00
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Diffusion To Help Control Modal Problems?
Replies: 4
Views: 17158
Ireland

Re: Diffusion To Help Control Modal Problems?

Double Dees.....
The substrate actually absorbs well from 125 Hz to 160 Hz and then drops off precipitously (see attached).


The attached test seems to state that the material was tested using a D mounting. This would create a damped membrane type of resonant absorption.

DDDD
by DanDan
Fri, 2019-Oct-25, 15:30
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Re: Air Gap Discussion

Indeed sgleason. Two of the edges of the two traps are removed by butting together. So a loss there. But a gain due to the doubled surface area. I just wonder if there is any testing out there to know accurately if it is better to gap them, and if so how much before they begin to operate similar to ...
by DanDan
Thu, 2019-Oct-24, 14:13
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Re: Air Gap Discussion

Now if there is significant mass to the absorbent material and membrane absorption occurring... And 'springiness' I reckon. A 705 / Minitrap panel is quite heavy and quite resonant. This is quite audible and holds up when they are free hanging or even outdoors. I sometimes wonder if the less spring...
by DanDan
Tue, 2019-Oct-22, 19:06
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Re: Air Gap Discussion

Corner straddling has a unique effect. In a way the fibre is as both as close to both boundaries, and as far from them without springing a leak. Even a 2” gap collapses the boost. http://forum.studiotips.com/viewtopic.php?f=8&t=534
by DanDan
Sun, 2019-Oct-20, 18:32
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Re: Air Gap Discussion

I’m on a phone here. Eric’s Baffles seem to be 65 mm with 35mm air. I am not seeing data with no airgap. Am I missing something? Ta all
by DanDan
Sun, 2019-Oct-20, 18:24
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Re: Air Gap Discussion

Interesting random pic bert! On another forum deedeeyah posted spectra of presumably large gigs. Pronounced HF roll off. I have looked at Erics Baffles and Ethans fibre tests. The reason I started this ball rolling here is that I am not at all convinced that isolated panels do benefit from airgaps. ...
by DanDan
Sat, 2019-Oct-19, 11:33
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Re: Air Gap Discussion

Great answer. I have seen Lab Reports and the Bobgolds treasure chest of data. But those samples are all 10 Metres or Yards Square, and contiguous. But I think the devil is in the detail. At the edge of the envelope, let's consider just one regular MiniTrap on a reasonable sized regular domestic bou...
by DanDan
Wed, 2019-Oct-16, 19:48
Forum: RECORDING STUDIO ACOUSTICS AND TREATMENT
Topic: Air Gap Discussion
Replies: 22
Views: 58124
Ireland

Air Gap Discussion

I would like to start a little discussion of the Air Gap. A suspended ceiling with say 1" Fibre tiles and a 16" Air Gap performs remarkably well, very high absorption down as far as 50Hz. Note the whole boundary is treated. But consider a typical Cloud, say four 4"x4'x2'. In this case...