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Copy of ACOUSTICS
Transcript of Copy of ACOUSTICS
CALLEJA, MARTIN OWEN
YOUNG, RIGINA JEANNE
BS ARCHITECTURE III-3
A ROOM BUILT TO ENABLE AN AUDIENCE TO HEAR AND WATCH PERFORMANCES.
WHAT IS AN AUDITORIUM?
TO DESIGN AN AUDITORIUM THAT WILL CATER 250-300 SEATING CAPACITY WITH A 18M X 20M DIMENSIONS.
ACOUSTICS REQUIREMENTS FOR GOOD SOUND
FREEDOM FROM ACOUSTICAL DEFECTS
LOW LEVEL OF BACKGROUND NOISE
There should be adequate loudness in every part of the auditorium, especially in remote seats.
The sound energy should be uniformly distributed within the room.
Optimum reverberation characteristics should be provided in the auditorium
The room should be free from acoustical defects such as:
Formation of echoes
Background noise and vibration should be sufficiently excluded
18m X 20m
– acoustical board (NRC : .95)
For stage – wood (NRC: .10)
- gypsum board (NRC: .05)
For seating area - Regular perforiated
bamboo (NRC: .60)
- Carpet (NRC: .70)
For stage- wood parquet (NRC: .05)
For seating area – carpet on concrete (NRC: .30)
Plywood (NRC: .15)
STRENGTH OF OUR DESIGN:
ELEVATION OF THE STAGE
sound source must be raised as much as much as visible to secure a free flow of direct sound.
The floor where the audience is seated should be properly ranked.
Each seat is fixed and foldable, which enables space savings.
The ceiling and the front portion of the side wall of an auditorium are always suitable surface for the accomodation of sound reflectors
Fire and Safety Considerations.
Adequate Lighting System
The air-conditioning system establishes a very cooling and relaxing system which audiences with a suitable providesenvironment for listening and watching.
use of bamboo as wall reflective materials
use of sky blue color in the ceiling
use of color green for the audience seating
SOUND DIAGRAM (LAW OF REFLECTION)
HALF PLAN VIEW
COMPUTAION OF NRC and RT
Surface Materials Area (m2) NRC (Area x NRC)
W1 A1 Regular 67.12 0.60 40.27
W1 A2 Drapery 8.636 0.55 4.75
W1 A3 Gypsum board 10.54 0.05 0.5
W2 A1 Regular 42.837 0.60 25.70
W2 A2 Carpet 18 0.30 5.4
W3 A1 Regular 51.65 0.60 30.99
W3 A2 Glass 4 0.80 3.2
W4 A1 Regular 42.837 0.60 25.7
W4 A2 Carpet 18 0.30 5.4
Floor A1 Carpet 268.995 0.30 80.69
Floor A2 Wood 80.1 0.05 4.005
Ceiling A1 Acoustical 314.692 0.95 298.9574
V= 18 x 20 x 6
RT= 0.16 V / Ax
RT= 0.16 (2,160) / 525.56
THANK YOU FOR LISTENING :)