Construction Today - September 2016 - 86

Institutional

By Niklas Moeller

The Evolution of

Sound Masking
T

he ambient - or background sound
- level in most facilities is very low,
leaving office employees to work in
'pin-drop' conditions in which they
can easily hear conversations and noises.
When using a sound masking system to
address this issue, one must ensure the engineered sound it distributes is not only effective,
but as unobtrusive as possible. Unlike 'white
noise' or 'pink noise' - a term often mistakenly
used in this context - sound masking follows
a non-linear curve specifically designed to
balance acoustic control and occupant comfort.
No system can achieve this goal 'out of
the box' because, regardless of its design,
the sound changes as it interacts with the
facility's interior. In order to meet the curve,
an acoustician or technician measures the
sound at ear height and adjusts the system's

86

CONSTRUCTION-TODAY.COM SEPTEMBER 2016

volume and frequency accordingly. This tuning process ensures the
sound provides the intended effects. However, it is impossible to
achieve perfection at every measurement location. Therefore, a specification will also include a 'tolerance' indicating how much the sound
is allowed to deviate from the curve. It is vital to keep this value to a
minimum - a fact emphasized by masking's technological evolution.

Centralized Architecture
Centralized architecture originated in the 1960s. In this configuration,
the equipment used for sound generation, volume and frequency
control is located in a room and connected to a large number of loudspeakers, forming a zone.
The facility is divided into categories such as open plan, closed
room, corridor and reception, and a zone is created for each type. Each
zone is set to a 'best average' level; however, the sound fluctuates as it
interacts with the workplace's design.
If the volume is increased due to a performance deficiency in one
area, that change is applied to the entire zone, making it too loud in
others, or vice versa. Most designs offer volume control at each loud-


http://www.CONSTRUCTION-TODAY.COM

Table of Contents for the Digital Edition of Construction Today - September 2016

Contents
Construction Today - September 2016 - Cover1
Construction Today - September 2016 - Cover2
Construction Today - September 2016 - 1
Construction Today - September 2016 - Contents
Construction Today - September 2016 - 3
Construction Today - September 2016 - 4
Construction Today - September 2016 - 5
Construction Today - September 2016 - 6
Construction Today - September 2016 - 7
Construction Today - September 2016 - 8
Construction Today - September 2016 - 9
Construction Today - September 2016 - 10
Construction Today - September 2016 - 11
Construction Today - September 2016 - 12
Construction Today - September 2016 - 13
Construction Today - September 2016 - 14
Construction Today - September 2016 - 15
Construction Today - September 2016 - 16
Construction Today - September 2016 - 17
Construction Today - September 2016 - 18
Construction Today - September 2016 - 19
Construction Today - September 2016 - 20
Construction Today - September 2016 - 21
Construction Today - September 2016 - 22
Construction Today - September 2016 - 23
Construction Today - September 2016 - 24
Construction Today - September 2016 - 25
Construction Today - September 2016 - 26
Construction Today - September 2016 - 27
Construction Today - September 2016 - 28
Construction Today - September 2016 - 29
Construction Today - September 2016 - 30
Construction Today - September 2016 - 31
Construction Today - September 2016 - 32
Construction Today - September 2016 - 33
Construction Today - September 2016 - 34
Construction Today - September 2016 - 35
Construction Today - September 2016 - 36
Construction Today - September 2016 - 37
Construction Today - September 2016 - 38
Construction Today - September 2016 - 39
Construction Today - September 2016 - 40
Construction Today - September 2016 - 41
Construction Today - September 2016 - 42
Construction Today - September 2016 - 43
Construction Today - September 2016 - 44
Construction Today - September 2016 - 45
Construction Today - September 2016 - 46
Construction Today - September 2016 - 47
Construction Today - September 2016 - 48
Construction Today - September 2016 - 49
Construction Today - September 2016 - 50
Construction Today - September 2016 - 51
Construction Today - September 2016 - 52
Construction Today - September 2016 - 53
Construction Today - September 2016 - 54
Construction Today - September 2016 - 55
Construction Today - September 2016 - 56
Construction Today - September 2016 - 57
Construction Today - September 2016 - 58
Construction Today - September 2016 - 59
Construction Today - September 2016 - 60
Construction Today - September 2016 - 61
Construction Today - September 2016 - 62
Construction Today - September 2016 - 63
Construction Today - September 2016 - 64
Construction Today - September 2016 - 65
Construction Today - September 2016 - 66
Construction Today - September 2016 - 67
Construction Today - September 2016 - 68
Construction Today - September 2016 - 69
Construction Today - September 2016 - 70
Construction Today - September 2016 - 71
Construction Today - September 2016 - 72
Construction Today - September 2016 - 73
Construction Today - September 2016 - 74
Construction Today - September 2016 - 75
Construction Today - September 2016 - 76
Construction Today - September 2016 - 77
Construction Today - September 2016 - 78
Construction Today - September 2016 - 79
Construction Today - September 2016 - 80
Construction Today - September 2016 - 81
Construction Today - September 2016 - 82
Construction Today - September 2016 - 83
Construction Today - September 2016 - 84
Construction Today - September 2016 - 85
Construction Today - September 2016 - 86
Construction Today - September 2016 - 87
Construction Today - September 2016 - 88
Construction Today - September 2016 - 89
Construction Today - September 2016 - 90
Construction Today - September 2016 - 91
Construction Today - September 2016 - 92
Construction Today - September 2016 - 93
Construction Today - September 2016 - 94
Construction Today - September 2016 - 95
Construction Today - September 2016 - 96
Construction Today - September 2016 - 97
Construction Today - September 2016 - 98
Construction Today - September 2016 - 99
Construction Today - September 2016 - 100
Construction Today - September 2016 - 101
Construction Today - September 2016 - 102
Construction Today - September 2016 - 103
Construction Today - September 2016 - 104
Construction Today - September 2016 - 105
Construction Today - September 2016 - 106
Construction Today - September 2016 - 107
Construction Today - September 2016 - 108
Construction Today - September 2016 - 109
Construction Today - September 2016 - 110
Construction Today - September 2016 - 111
Construction Today - September 2016 - 112
Construction Today - September 2016 - 113
Construction Today - September 2016 - 114
Construction Today - September 2016 - 115
Construction Today - September 2016 - 116
Construction Today - September 2016 - 117
Construction Today - September 2016 - 118
Construction Today - September 2016 - 119
Construction Today - September 2016 - 120
Construction Today - September 2016 - 121
Construction Today - September 2016 - 122
Construction Today - September 2016 - 123
Construction Today - September 2016 - 124
Construction Today - September 2016 - 125
Construction Today - September 2016 - 126
Construction Today - September 2016 - 127
Construction Today - September 2016 - 128
Construction Today - September 2016 - Cover3
Construction Today - September 2016 - Cover4
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue5b
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue5a
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue4
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue4a
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue3
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue3a
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue2
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue2a
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue1
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol17issue1a
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol16issue6
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol16issue5
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol16issue4
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol16issue3
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol16issue2
http://digital.construction-today.com/nxtbooks/knighthouse/ct_vol16issue1
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201712
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201711
http://digital.construction-today.com/nxtbooks/knighthouse/ct_20170910
http://digital.construction-today.com/nxtbooks/knighthouse/ct_20170708
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201706
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201705
http://digital.construction-today.com/nxtbooks/knighthouse/ct_20170304
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201702
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201701
http://digital.construction-today.com/nxtbooks/knighthouse/ct_20161112
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201610vol2
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201610
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201609
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201608
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201607
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201606
http://digital.construction-today.com/nxtbooks/knighthouse/ct_201605
http://digital.construction-today.com/nxtbooks/phoenix/ct_201604
http://digital.construction-today.com/nxtbooks/phoenix/ct_20160304
http://digital.construction-today.com/nxtbooks/phoenix/ct_20160102
http://digital.construction-today.com/nxtbooks/phoenix/ct_20151112
http://digital.construction-today.com/nxtbooks/phoenix/ct_20150910
http://digital.construction-today.com/nxtbooks/phoenix/ct_20150708
http://digital.construction-today.com/nxtbooks/phoenix/ct_20150506
http://digital.construction-today.com/nxtbooks/phoenix/ct_20150304
http://digital.construction-today.com/nxtbooks/phoenix/ct_20150102
http://digital.construction-today.com/nxtbooks/phoenix/ct_20141112
http://digital.construction-today.com/nxtbooks/phoenix/ct_20140910
http://digital.construction-today.com/nxtbooks/phoenix/ct_20140708
http://digital.construction-today.com/nxtbooks/phoenix/ct_20140506
http://digital.construction-today.com/nxtbooks/phoenix/ct_20140304
http://digital.construction-today.com/nxtbooks/phoenix/ct_20140102
http://digital.construction-today.com/nxtbooks/phoenix/ct_20131112
http://digital.construction-today.com/nxtbooks/phoenix/ct_20130910
http://digital.construction-today.com/nxtbooks/phoenix/ct_20130708
http://digital.construction-today.com/nxtbooks/phoenix/ct_20130506
http://digital.construction-today.com/nxtbooks/phoenix/ct_20130304
http://digital.construction-today.com/nxtbooks/phoenix/ct_20130102
http://digital.construction-today.com/nxtbooks/phoenix/ct_20121112
http://digital.construction-today.com/nxtbooks/phoenix/ct_20120910
http://digital.construction-today.com/nxtbooks/phoenix/ct_201208
http://digital.construction-today.com/nxtbooks/phoenix/ct_201207
http://digital.construction-today.com/nxtbooks/phoenix/ct_201206
http://digital.construction-today.com/nxtbooks/phoenix/ct_201205
http://digital.construction-today.com/nxtbooks/phoenix/ct_201204
http://digital.construction-today.com/nxtbooks/phoenix/ct_201203
http://digital.construction-today.com/nxtbooks/phoenix/ct_201202
http://digital.construction-today.com/nxtbooks/phoenix/ct_201201
http://digital.construction-today.com/nxtbooks/phoenix/ct_201112
http://digital.construction-today.com/nxtbooks/phoenix/ct_20111011
http://digital.construction-today.com/nxtbooks/phoenix/ct_201109
http://digital.construction-today.com/nxtbooks/phoenix/ct_201108
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201107
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201106
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201105
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201104
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201103
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201102
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201101
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201012
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201011
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201010
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201009
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201008
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201007
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201006
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201005
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201004
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201003
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201002
http://digital.construction-today.com/nxtbooks/businessmedia/ct_201001
http://digital.construction-today.com/nxtbooks/schofield/ct_200912
http://digital.construction-today.com/nxtbooks/schofield/ct_200911
http://digital.construction-today.com/nxtbooks/schofield/ct_200910
http://www.nxtbook.com/nxtbooks/schofield/ct_200909
http://www.nxtbookMEDIA.com