A

c

o

u

s

t

i

c

l

i

g

h

t

i

n

g

s

o

l

u

t

i

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n

s

A

A

c

P

o

P

u

L

s

I

C

t

i

A

c

T

l

I

i

O

g

N

h

t

i

n

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337

338

Sound Absorption of Diade 120 cm

based on test results in compliance

with EN ISO 335:2003

“measurement of sound absorption

in a reverberation room”.

Model of application

call center

Location analysis

A workspace where several people speaking need physical

isolation to be concentrated, sensible control of sound propagation + effective

control of light too.

Solution

Diade is a perfect solution that brings the sound control where needed,

guarantying pleasant light and anti-glare effect on working areas.

Room data

L=15m

W=10m

H=4m

Fixtures installation

1 x Diade every 4 positions

2.4 m from the ground

Lighting source used

LED module 32W (uplight)

LED module 43W (downlight

Illuminance average

Post (average value) 480 lx

Before

Time of reverberation* 2,27 s

After

(+ 12 Diade)

Time of reverberation 1,33 s

Decrease of reverberation

about 41%**

* Measuring reverberation time allows to calculate total sound

absorption. Reverberation time varies according to the frequency.

If reverberation time is too long, the space can have echoes and

rumbles.

** The data is always approximate: the software doesn’t take in

consideration the position of the speaker and the position of absorbent

surfaces.

2.8

2.6

2.4

2.2

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

125

250

500

1000

2000

4000

Horizontal configuration

Frequency (Hz)

Vertical configuration

A

F

F

2

,

4

m

L

U

C

E

P

L

A

N

2

0

2

2

/

2

3

M

O

D

.

D

i

a

d

e

L

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C

E

P

L

A

N

2

0

2

2

/

2

3

M

O

D

.

D

i

a

d

e

A

P

P

L

I

C

A

T

I

O

N

E

q

u

i

v

a

l

e

n

t

a

b

s

o

r

p

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i

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p

e

r

u

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(

m

2

)