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Copy of ACOUSTICS

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by

rigina young

on 19 August 2013

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Transcript of Copy of ACOUSTICS

BUILDING UTILITIES III
ACOUSTICAL DESIGN
BY:
CALLEJA, MARTIN OWEN
RIZALDO, IRENNELLE
YOUNG, RIGINA JEANNE
BS ARCHITECTURE III-3
A ROOM BUILT TO ENABLE AN AUDIENCE TO HEAR AND WATCH PERFORMANCES.
WHAT IS AN AUDITORIUM?
PROJECT DESCRIPTION:
TO DESIGN AN AUDITORIUM THAT WILL CATER 250-300 SEATING CAPACITY WITH A 18M X 20M DIMENSIONS.


18M

20M
ACOUSTICS REQUIREMENTS FOR GOOD SOUND
ADEQUATE LOUDNESS
UNIFORMITY

REVERBERANCE

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
Sound foci
Dead spots
Insufficient loudness
External noise
Reverberation

Background noise and vibration should be sufficiently excluded
SPEECH AUDITORIUM
18m X 20m

FLOOR PLAN

PROJECTOR ROOM
STAGE
DRESSING
RM. 1
DRESSING
RM 2
MAIN CURTAIN
FE
FE
ENTRY
EXIT
SECTION:


Ceiling
– acoustical board (NRC : .95)
Walls
For stage – wood (NRC: .10)
- gypsum board (NRC: .05)
For seating area - Regular perforiated
bamboo (NRC: .60)
- Carpet (NRC: .70)
Floorings
For stage- wood parquet (NRC: .05)
For seating area – carpet on concrete (NRC: .30)
Doors
Plywood (NRC: .15)

MATERIALS:
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.
DESIGN CONCEPT:
NATURE
EXPLANATION:

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)

SPEAKER
SECTION VIEW
HALF PLAN VIEW
SPEAKER
COMPUTAION OF NRC and RT
Surface Materials Area (m2) NRC (Area x NRC)

W1 A1 Regular 67.12 0.60 40.27
Perforiated
Bamboo

W1 A2 Drapery 8.636 0.55 4.75
(medium weight)

W1 A3 Gypsum board 10.54 0.05 0.5

W2 A1 Regular 42.837 0.60 25.70
Perforiated
Bamboo

W2 A2 Carpet 18 0.30 5.4

W3 A1 Regular 51.65 0.60 30.99
Perforiated
Bamboo

W3 A2 Glass 4 0.80 3.2

W4 A1 Regular 42.837 0.60 25.7
Perforiated
Bamboo

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
Board

Total: 525.56

V= 18 x 20 x 6
V= 2160

RT= 0.16 V / Ax
RT= 0.16 (2,160) / 525.56
RT= 0.66

PERSPECTIVE
THE END
THANK YOU FOR LISTENING :)
Full transcript