| Description |
| Advanced consideration of noise control in buildings;
ventilating system noise and vibration; acoustic design variables. |
| Prerequisite(s) |
| AE 309 |
| Course Objectives |
| Development of skills for the control of acoustic environments
in buildings and HVAC noise, backed by solid physical principles of acoustics
and vibration .
|
| Topics |
- Levels:
sound pressure, intensity and sound power; manipulation of levels
- Frequency
and wavenumber spectra
- Reflection
from walls
- Propagation
- Resonances
in rooms
- Schroeder
frequency
- Measurements
- sound intensity, sound power
- Noise
criteria
- Sound
absorption
- Room constant
- Absorptive
properties of materials
- Tuned
absorbers
- Practical
applications of absorptive treatments
- Acoustic
reflections
- Concert
halls
- Sound
systems in rooms
- Speech
intelligibility
- Overview
of noise treatment
- Transmission
losses of partitions
- Composite
transmission loss
- Mass law
- Coincidence
dip
- Double-leaf
partitions
- Close-fitting
enclosures
- Impact
isolation of floor/ceiling structures
- Barriers
- Overview
of HVAC noise predictions and approach to HVAC noise control
- Fan noise
- Noise
generated in HVAC ducts
- Propagation
inside ducts
- Attenuation
at duct branches and terminations
- Silencers
and duct linings
- Active
noise control
- Duct break-out
and break-in noise
- Duct lagging
- Roof top
installations
- Single-stage
vibration mounting systems
- Passive
dynamic absorbers
- Measurement
of performance of mounting systems
- Multi-degrees
of freedom in mounting systems
- Two-stage
vibration mounting systems
- Damping treatments
|
| Class/Lab Schedule |
| 2 classes/week, 75 minutes/class |
