Post by grega60438 on Nov 19, 2018 4:27:08 GMT
Thank you for pointing me in the direction of the HandbookAcoustics book. I have learned much...I think :-)
After reading HandbookAcoustics I found the answer to some of my questions IMO.
Question:
For the wall trap drawing design, each is 24" wide which is symmetrical. Should I do asymmetrical? One trap at 24"W, another at 28"W, another at 33", another at 38" etc...
Asymmetrical make a difference? Hmm...
ANSWER:
From the HandbookAcoustics:
1. Polycylindrical Absorbers: With polycylindrical elements (polys), it is acoustically possible to achieve a good diffuse field along with liveness and brilliance, factors that tend to oppose each
other in rooms with flat surfaces. The larger the chord dimension, the better the bass
absorption.
2.The polycylindrical diffuser (poly) is an effective diffusing element,
3. It is important that diffusing elements be characterized by randomness. A wall lined with polys, all of 2-ft chord and of the same depth, might be beautiful to behold, but is not very effective for diffusion.
Note: My traps are also convex, acting like polycylindrical diffusers to an extent. So yes, asymmetrical will make a difference IMO.
Also found some other points of interest from the HandbookAcoustics::
1. I have a window between two spaces that will pass low frequencies. I suspect Acoustically Coupled Spaces at low frequencies. I will determine via REW testing, during the construction.
2. I previously questioned if a more live recording room would be beneficial, but from what I have read IMO: the Artificial reverberation is better, if you have a high quality space verb such as the TC Electronic 6000 or VSS3. I do.
IMO with all the absorption I had, I had a much better space than thought, but needs further sound isolation, hence the rebuild. IMO the new rebuild will be better on all fronts.
I am still researching Helmholtz vs. VPR absorption. I am not yet confident on the VPR research, as there appears to be more going on than understood. Still studying...I plan to continue with super-chunks and complete coverage of all walls and ceiling with traps, as much as possible. I can always add Helmholtz and/or VPR later. I have room for large Helmholtz in the attic and can also add VPR later as needed. The REW measurements and research will determine that path.
Peace!
Greg60438
After reading HandbookAcoustics I found the answer to some of my questions IMO.
Question:
For the wall trap drawing design, each is 24" wide which is symmetrical. Should I do asymmetrical? One trap at 24"W, another at 28"W, another at 33", another at 38" etc...
Asymmetrical make a difference? Hmm...
ANSWER:
From the HandbookAcoustics:
1. Polycylindrical Absorbers: With polycylindrical elements (polys), it is acoustically possible to achieve a good diffuse field along with liveness and brilliance, factors that tend to oppose each
other in rooms with flat surfaces. The larger the chord dimension, the better the bass
absorption.
2.The polycylindrical diffuser (poly) is an effective diffusing element,
3. It is important that diffusing elements be characterized by randomness. A wall lined with polys, all of 2-ft chord and of the same depth, might be beautiful to behold, but is not very effective for diffusion.
Note: My traps are also convex, acting like polycylindrical diffusers to an extent. So yes, asymmetrical will make a difference IMO.
Also found some other points of interest from the HandbookAcoustics::
1. I have a window between two spaces that will pass low frequencies. I suspect Acoustically Coupled Spaces at low frequencies. I will determine via REW testing, during the construction.
2. I previously questioned if a more live recording room would be beneficial, but from what I have read IMO: the Artificial reverberation is better, if you have a high quality space verb such as the TC Electronic 6000 or VSS3. I do.
IMO with all the absorption I had, I had a much better space than thought, but needs further sound isolation, hence the rebuild. IMO the new rebuild will be better on all fronts.
I am still researching Helmholtz vs. VPR absorption. I am not yet confident on the VPR research, as there appears to be more going on than understood. Still studying...I plan to continue with super-chunks and complete coverage of all walls and ceiling with traps, as much as possible. I can always add Helmholtz and/or VPR later. I have room for large Helmholtz in the attic and can also add VPR later as needed. The REW measurements and research will determine that path.
Peace!
Greg60438