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Science > Acoustics 
horsepower (HP)
Science; Acoustics
A foot pounds per second unit of power, 1 hp equal to 550 fps = 746 watts
dodecahedron
Science; Acoustics
A general dodecahedron is a polyhedron having 12 faces. Acoustic examples are dodecahedron and hemi-dodecahedron loudspeakers arrange to provide isotropic sound sources
directivity pattern
Science; Acoustics
A graphical description, usually in polar co-ordinates, of the response of the transducer as a function of the direction of the transmitted or incident sound waves in a specified ...
percentile levels (Ln)
Science; Acoustics
Percentage exceeded levels where 'n' is between 0.1 and 99.9% calculated by statistical analysis. - may also include other descriptors i.e. A, C, L or Z weightings. Most common Ln ...
standing wave
Science; Acoustics
Periodic wave having a fixed distribution in space that is the result of interference of progressive waves of the same frequency and kind. Note: such waves are characterized by ...
phase cancellation
Science; Acoustics
Phase cancellation occurs when two signals of the same frequency are out of phase with each other resulting in a net reduction in the overall level of the combined signal.
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