A

c

o

u

s

t

i

c

l

i

g

h

t

i

n

g

s

o

l

u

t

i

o

n

s

Sound Absorption of Farel

based on test results in compliance

with EN ISO 335:2003

“measurement of sound absorption

in a reverberation room”.

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

Frequency (Hz)

Model of application: meeting room

Location analysis:

Those kind of areas are useful for a reserved space where the quality of conver-

sation is the main goal. A space for interaction with digital system as well as

persons. A creative space.

Solution:

Focus the light on the desk surface, create a more snug space, juiced up by

chromatics and material interactions between textile and metallic parts.

The “dome effect” guarantee less sound dispersion and a better effective

communication.

Room data

L=6m

W= 4 m

H=3m

Fixtures installation

2 fixtures for 1 meeting table

4000

1,6 m AFF

Lighting source used

Led 23W 2700K

Illuminance average

Post (average value) 678 lx

Before

Time of reverberation* 0,9 s

After

(+ 2 Farel)

Time of reverberation 0,82 s

Decrease of reverberation

about 15%**

* 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.

344

1

,

6

m

t

L

U

C

E

P

L

A

N

2

0

2

2

/

2

3

M

O

D

.

F

a

r

e

l

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

t

i

o

n

p

e

r

u

n

i

t

(

m

2

)

A

c

o

u

s

t

i

c

l

i

g

h

t

i

n

g

s

o

l

u

t

i

o

n

s

L

U

C

E

P

L

A

N

2

0

2

2

/

2

3

M

O

D

.

F

a

r

e

l

343