vocal booth acoustic treatment

krish · Post by **krish** » Tue Apr 01, 2003 4:43 am

well i just need if you can give some details regarding a good slat resonator that can work like a wide-band resonator.

Krish

Post by **John Sayers** » Tue Apr 01, 2003 9:10 am

Krish - click on the John Sayers Productions logo (upper right on this page) and goto Wall units. There you will find directions to construct a broadband slot resonator.

cheers
john

krish · Post by **krish** » Tue Apr 01, 2003 11:29 pm

can i build this?

Preparing the plan for wide-band slot resonator......

krish

Post by **John Sayers** » Wed Apr 02, 2003 8:24 am

yup - that looks fine

cheers
john

krish · Post by **krish** » Wed Apr 02, 2003 3:28 pm

thaks for verifying..

in case of slat resonator wall, my walls are horizontally angled so i have to put the timber slats vertically or horizontally?

Krish

Post by **John Sayers** » Wed Apr 02, 2003 10:49 pm

In your case it doesn't matter

cheers
john

krish · Post by **krish** » Fri Apr 04, 2003 4:44 am

care to guide me for the broadband slat rsonator tuned for the low mids suitable for vocal frequenices. I have following gap between my walls 50mm to 150 mm.

krish

Post by **John Sayers** » Fri Apr 04, 2003 7:35 am

Go here and click on Helmholtz calculator

http://www.saecollege.de/reference_material/index.html

cheers
John

krish · Post by **krish** » Sat Apr 05, 2003 4:44 pm

i am not sure i am calculating properly or not but using slot resonator calculator i am getting a high width size for the slats and very small width for slot around 6mm 10 mm 12 mm....... i have 75mm to 150 mm wall depth. The wall size is around 5'x8'.

Post by **John Sayers** » Sun Apr 06, 2003 8:29 am

Yeah - that's about right. With a 6" x 1" slat and a 5mm (1/4") gap you should be able to get down to around 285hz at the 150mm (6") depth.

cheers
john

krish · Post by **krish** » Sun Apr 06, 2003 4:26 pm

Hey !

I have changed the depth of slats and found a great changes in calculation. See here.....

Standard Slat Width=6"
Air Gap= 3" to 6"

1. 200-256Hzs

Slat Depth:75mm Slot Width: 6mm
2. 238-288Hzs

Slat Depth:50mm Slot Width: 6mm
3. 289-359Hzs

Slat Depth:75mm Slot Width: 12mm
4. 335-403Hzs

Slat Depth:50mm Slot Width: 12mm
5. 371-459Hzs

Slat Depth:75mm Slot Width: 20mm
6. 428-515Hzs

Slat Depth:50mm Slot Width: 20mm
7. 486-598Hzs

Slat Depth:75mm Slot Width: 35mm
8. 594-708Hzs

Slat Depth:50mm Slot Width: 40mm
9. 687-814Hzs

Slat Depth:75mm Slot Width: 45mm

Is it right?

Cheers

Post by **John Sayers** » Mon Apr 07, 2003 7:45 am

Yeah - it's a pretty deep slat but that will work. With slats that deep i.e. 75mm (3") x 150mm (6") and 50mm x 150mm alternating it looks cool if you run them vertically and it becomes a sort of diffuser as well

I did something similar at Guruland where we used 6" x 2" with the 6" as the depth and the 2" as the slat face.

cheers
john

krish · Post by **krish** » Sat Apr 12, 2003 8:00 pm

dear john,

i am currently building the wideband slot resonator wall as per the final plan.... just want to confirm the frequency range, i think for vocal 200-800hzs is fine?

krish

Post by **John Sayers** » Sat Apr 12, 2003 8:31 pm

yup - that's fine.

cheers
john

krish · Post by **krish** » Sat Apr 26, 2003 4:08 am

John i have just complete building my basic structure for the vocal studio, it includes 2 wide band slot resonator wall tuned for 200-800Khz. The contrasting walls have a sheetrock finish and insulation inside, and same sheetrock on ceiling and insulation inside. I am planning to lay a carpet on floor, what about the ceiling and sheetrock walls ? these should be covered by some cloth or i leave it simply painted? I am also having a heavy door in the booth and afraid that wooden door will be a subject of any acoustical problem ?

Krish

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vocal booth acoustic treatment

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