Ik heb dmv. een online room mode calculator wat zitten rekenen, waarbij ik vooral let op een zo ideal mogelijke Bonello chart, ik kom dan met de volgende afmetingen prima uit als ik mij niet vergis?
http://www.bobgolds.com/Mode/RoomModes.htmComputed Information:Room Dimensions: Length=6.5 m, Width=4.3 m, Height=2.7 m
Room Ratio: 1 : 1.59 : 2.4
R. Walker BBC 1996:
- 1.1w / h < l / h < ((4.5w / h) - 4): Pass
- l < 3h & w < 3h: Pass
- no integer multiple within 5%: Pass
Nearest Known Ratio:
- "4) L. W. Sepmeyer: 1965" 1 : 1.6 : 2.33
RT60 (IEC/AEC N 12-A standard): 268 ms
- ±50ms from 200Hz to 3.5kHz = 218 to 318ms
- ±100ms above 3.5kHz = 168 to 368ms
- <+300ms at 63hz = 568ms
- 300<RT60<600ms
RT60 (ITU/EBU Control Room Recommended): 227 ms
- ±50ms from 200Hz to 4kHz = 177 to 277ms
- <+300ms at 63hz = 527ms
- 200<RT60<400ms
Absorbtion to achieve ITU RT60: 574 sabins
Volume: 75 m^3
Surface Area Total: 110 m^2
Surface Area Floor: 27 m^2
Surface Area Ceiling+Floor: 54 m^2
Surface Area Front Wall: 11 m^2
Surface Area Front and Rear Wall: 22 m^2
Surface Area Left Wall: 17 m^2
Surface Area Left and Right Wall: 34 m^2
Surface Area 4 Walls: 56 m^2
Surface Area 4 Walls + floor: 83 m^2
(sabins - front wall - carpet) / Left+Right+Rear wall: 34 %
(sabins - front wall) / Left+Right+Rear wall: 94 %
Schroeder Fc: 103hz
Frequency Regions:
- No modal boost: 1hz to 26hz
- Room Modes dominate: 26hz to 103hz
- Diffraction and Diffusion dominate: 103hz to 412hz
- Specular reflections and ray accoustics prevail: 412hz to 20000hz
Count (26.5-184hz) : Axials=12, Tangentials=44, Obliques=48
Count (26.5-100hz) : Axials=6, Tangentials=8, Obliques=2
Critical Distance (direct = reverberant field): 4.70m
bonello_chart_001.jpg
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