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B

C

D

E

Acoustics glossary

A

B

C

D

E

F

H

I

K

L

M

N

O

P

R

S

U

W

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Ecophon develops, manufactures and markets acoustic panels, baffles and ceiling systems that contribute to a good working environment by enhancing peoples' wellbeing and performance. Our promise »A sound effect on people« is the core backbone of everything we do.

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Saint-Gobain Ecophon

Box 500

SE 265 03 Hyllinge

Sweden

Phone: +46 42 17 99 00

Fax: +46 42 22 59 29

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Acoustics glossary

A

Absorption Class

Acoustics

Air Flow Resistance

Airborne Sound

Ambient Noise Definition

Amplitude

Anechoic

Anechoic Chamber

Angle of Incidence

Articulation Class (AC)

Articulation Definition

Articulation Index (AI)

Articulation Loss of Consonants (Alcons)

Audible Range

Audiogram

Audiometer

Audiometric Room

Auditory Masking

A-weighting

B

Background noise (dB)

Broadband Noise

Building Acoustics

C

Calibration

Ceiling Attenuation Class (CAC)

C-weighting

D

Daily Exposure Level

Decay Rate

Decibel (dB)

Diffraction

Diffusion

Direct Field

Direct Sound

Dn,f,w (dB)

Dn,w (dB)

E

Early Decay Time (EDT)

Echo

Equivalent Absorption Area (Aeq)

Equivalent Continuous Sound Level Definition

F

Far Field

Flutter echo

Free Field

Frequency (f)

Frequency Analysis

Frequency band

H

Haas effect

Hearing loss

Hertz (Hz)

I

Impulse

Initial time-delay gap

Interzone Attenuation of Ceiling Systems

K

kHz

L

Loudness

M

Mass law

Muddy

N

Node

Noise

Noise Induced Hearing Loss (NIHL)

Noise Reduction

O

Octave bands

One-third octave band

P

Pascal (Pa)

Passive absorber

Permanent threshold shift

Phoneme

Pitch