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

stationary signal

Science; Acoustics

A stationary signal is a signal whose average statistical properties over a time interval of interest are constant. In general, the vibration signatures of rotating machines are stationary. ...

transient

Science; Acoustics

A sudden and very short duration signal. These signals start and stop within the analysis time (or measurement window). In most cases averaging is neither possible nor needed.

centimeter-gram-second (CGS)

Science; Acoustics

A system of measurement using the centimeter, the gram and the second as basic units of length, mass and time

meter-kilogram-second (MKS)

Science; Acoustics

A system of measurement using the meter, the kilogram and the second as basic units of length, mass and time

windowing

Science; Acoustics

A technique used to reduce spectral leakage by multiplying the time domain waveform by a window function. The process of windowing reduces the amplitudes of discontinuities at the edges of a ...

A thin hairline that can be positioned on a spectrum or time signal graphs to obtain a readout. Various types of cursor are available. For example, single cursor - a line, delta cursor - selects a ...

delay

Science; Acoustics

A time difference that has to elapse after (or before) triggering of a measurement and sampling of the time history data begins. There are situations where entering a trigger delay is useful.