Welcome to aural SAKAMOTO LAB. · 2015-06-10 · :Auditorium, Music practice room, Open-type...
Transcript of Welcome to aural SAKAMOTO LAB. · 2015-06-10 · :Auditorium, Music practice room, Open-type...
Institute of Industrial Science
SAKAMOTO LAB. [Development of technologies for quiet
and comfortable environment]
Advanced Mobility Research Center
http://www.acoust.iis.u-tokyo.ac.jp
Applied Acoustic Engineering
Development of technologies for quiet and comfortable environment Acoustic laboratory(Ce-101, Ce-B01)
Department of Architecture, Graduate school of Engineering
Welcome to aural demonstration using
sound field simulator!
Development of technologies for quiet and comfortable environment
◆Development of prediction methods:Numerical analysis ◆Room acoustic design:Auditorium, Music practice room, Open-type classrooms ◆Acoustic measurement:Sound propagation, Sound insulation and absorption ◆Development of sound field simulation:6 channel recording-reproduction system ◆Subjective evaluation:Concert halls, Living environments, Public spaces, Offices, other small spaces such as a car cabin
Our laboratory treats various acoustical issues about development of technologies for quiet and comfortable environment. Method of evaluating of acoustical environment and techniques of control and prediction of sound will be introduced.
Acoustical performance of music practice room
Sound masking system for speech privacy
IRT,6ch.
IRM,6ch.
Background Sound
: daily practice : before a concert
Eval
uatio
n Sc
ore
100
80
60
40
20
0 0.20 0.26 0.35 0.46 0.61 0.80
Experimental condition (Reverberation time [s])
Singers : daily practice : before a concert
*Error bars; standard deviation
Eval
uatio
n Sc
ore
100
80
60
40
20
0 0.20 0.26 0.35 0.46 0.61 0.80
Experimental condition (Reverberation time [s])
Woodwinds players
Woodwinds player (Clarinet) Singer (Tenor)
Psycho-acoustical assessment of environmental noise
Loud
ness
sco
re (
7-st
ep c
ateg
ory)
1
2
3
4
5
6
7
20 30 40 50 60 70 80 90 100 110
Loud
ness
sco
re (
7-st
ep c
ateg
ory)
LLZ [phons]
R=0.991
LLM [phons]20 30 40 50 60 70 80 90 110100
1
2
3
4
5
7
6
R=0.988
LLZ LLM
Wind turbine noise
Public space
No vibration absorbers Pattern1
Pattern2 Pattern3
Development of sound insulation performance of double-layer wall using vibration absorbers