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What Annoys A Noise An Oyster?
Woods Hole Research CenterTeam C
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Jon Meendering –UOJudy Theodorson - WSU Spokane
Todd Gabbard - Kansas State University Tom Martineau - FAMU Jack Parchesky - Onset
Devon Sylvester - Temple University
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Why study acoustics?Observations of building properties
• No “white / masking” noise• Open plan / spatial volume• Design intent• Hard surfaces• Acoustic abatement value engineered out
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Noise generated in the Commons area disturbs workers in adjacent offices.
Hypothesis
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Methodology
• Interviews• Monitoring db
levels over time in office space.
• Mapping of noise propagation in Commons area.
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Interviewing
• Noise events?• Overall
impression?• Positive /
negative?• Modifications?
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Noise Production
fr/ common areas
through structure
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Interviews: First floor
+-o
o
- negative o neutral +positive
Ω
Ω
Overall Impression? Modifications?
close door nothing
-
headphones/ white noise
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Interviews: Second floor
o
+
- negative o neutral +positive
Overall Impression?
Ω
Modifications?
close door nothing
++o+
++
headphones/ white noise
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+Interviews:
• open door policy• questions answered w/o getting up• absence of background noise• commons good for meetings• no echoes
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-Interviews:
• overhearing personal conversation• general lack of privacy• conflicts between needing to have door
open and wanting to close door
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Office Monitoring
• Identified case study office with specific noise problems
• Product invention: manufactured cable to attach sound meter to HOBO for measurement over time.
Jack Parchesky Rocks!
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Office 222 Noise Infiltration
40
45
50
55
60
65
70
75
80
85
90
10:33
:2110
:42:31
10:51
:4111
:00:51
11:10
:0111
:19:11
11:28
:2111
:37:40
11:46
:5011
:56:00
12:05
:1012
:14:20
12:23
:3012
:32:40
12:41
:50
dB200 per. Mov. Avg. (dB)
10:40 Door Slam
Experiment
11:45 Occupant
Closes Door
12:22Bags popped
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Noise Mapping
• Incidental noiseWalkingBook dropCoughing
• Impromptu conversation2-6 people talking
• Large gatheringsMeetingsLunch
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INCIDENTAL NOISE
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119
123 A
B
Door SLAM Measurements
506070
8090
100
Room119
Room123
Room220
Room223
Door Location
Point APoint BPoint CPoint D
220
223
C
D
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Test 1Test 2 A
B
Book DROP Measurements
50
60
70
80
90
100
Test 1 Test 2 Test 3 Test 4Test Locations
Point APoint BPoint CPoint DPoint E
Test 3
Test 4
C
D
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Test 2Test 1
B
A
COUGH Measurements
50
60
70
80
90
100
Test 1 Test 2 Test 3 Test 4Test Locations
Point APoint BPoint CPoint DPoint E
Test 3
Test 4
C
D
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WALKING Measurements
50
6070
8090
100
Stroll1
Stroll2
Stroll3
Stroll4
Stroll5
Stroll Path
Point APoint BPoint CPoint DPoint E
Stroll 1Stroll 2
Stroll 3
Stroll 4
Stroll 4
B
A
C
D
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Conference Room CONVERSATION Measurements
5060708090
100
Min MaxMax and Min Levels
Point 1Point 2Point 3Point 4Point 5
ConversationArea
3
1
4
5
2
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Lunchtime Conversation Measurements
50
60
70
80
90
100
12:0
8pm
Min
12:0
8pm
Max
12:1
3pm
Min
12:1
3pm
Max
12:1
8pm
Min
12:1
8pm
Max
12:3
0pm
Min
12:3
0pm
Max
Test Locations
Point APoint BPoint CPoint D
A
B
D
C
ConversationArea
People:
12:08pm: 16-19 People
12:13pm: 25 People
12:18pm: 26 People
12:30pm: 22 People
Events:12:08pm: People arriving (Point A)
Typing audible from room 123 (Point D)12:13pm: Soda can opened – 80 dB (Point B) –70 dB (Point A)
Laughter – 75 dB (Point B)12:15pm: 119 door closes (Point A)
125 door closes (Point A)222 door closes (Point D)
12:18pm: 223 door closes (Point D)12:22pm: 2 Bags pop –78dB, 80 dB12:30pm: Typing audible again (Point D)
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Conclusions:PARTY ON WOODS HOLE!
• Does noise generated in the commons area disturb the work of the center?
• OSHA standards• Noise Criteria Curves