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Definitions (637)
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accelerance
complex ratio of acceleration to applied force.
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bandwidth
range of frequencies, usually of standard size in acoustics, for example Octave or 1/3-octave Bands. The lower and upper frequencies are also known as the -3 dB or half-power points.
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broadband noise
also called wideband noise - noise whose energy is distributed over a wide section of the audible range as opposed to Narrowband Noise.
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hml
3-values related to the attenuation provided by hearing protectors at High, Medium and Low frequencies - supplied by the manufacturer. BS EN ISO 4869
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lavg
averaged sound level with selectable Exchange Rate. Results also vary depending if a Threshold Level was used.
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1/n-octave
analysis made on a fractional part of an Octave where n is the variable. Commonly used values are 1/1, 1/3, 1/12 and 1/24-octave.
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a/d converter
converts a Analogue signal to a Digital signal.
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ac coupling
the connection of a signal from one circuit to another in a manner that rejects DC components.
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acceleration : a
is the rate of change of Velocity and is a Vector quantity.
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acceleration equivalent level : aeq
a single number to represent the equivalent acceleration energy as it varies over a working day, measured in m/s2
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