Acoustics

Acoustics

Of or pertaining to the study of mechanical waves in all stages of matter including sounds, vibration, ultrasounds, and infrasound.

Industry: Physics; Science

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Acoustics

Decay rate is the time taken for the sound pressure level in a room to decay - measured in decibels per second (dB/s). Decay rate d in a reverberant room is related to the reverberation time T by the ...

national physical laboratory (NPL)

Science; Acoustics

National physical laboratory is the UK's National Measurement Institute and is a world-leading center of excellence in developing and applying the most accurate measurement standards, science and ...

volumetric flux (q)

Science; Acoustics

Volumetric flux is the volumetric flow rate across a unit area - SI units m 3 ·s -1 ·m -2

phase function

Science; Acoustics

Phase function is usually computed with coherence function, shows phase difference as a function of frequency between two sets of time series data.

damping

Science; Acoustics

Any means of dissipating vibration energy within a vibrating system. The dissipation of energy with time or distance. The term is generally applied to the attenuation of sound in a structure owing to ...

sound

Science; Acoustics

Any pressure variation that the human ear can detect. Depending on the medium, sound extends and affects a greater area (propagates) at different speeds. In air, sound propagates at a speed of ...

dBA, dBB, dBC, dBD, dB Flat, dB Linear and dBZ

Science; Acoustics

Are often used to denote the use of different frequency weighting filters, used to approximate the human ear's response to sound, although the measurement is still in dB (SPL). These measurements ...