GLOSSARY OF AUDIO TECHNICAL TERMS
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DistortionAny undesirable change or error in the reproduction of sound that alters the original signal.
Dome TweeterA high frequency speaker with a dome-shaped diaphragm.
DriverA loudspeaker unit, consisting of the electromagnetic components of a speaker, typically a magnet and voice coil that actually converts electrical energy into sound. - cone, dome, planar
Dynamic rangeThe range of sound intensity a system can reproduce without compressing or distorting the signal.
Efficiency ratingThe loudspeaker parameter that shows the level of sound output when measured at a prescribed distance with a standard level of electrical energy fed into the speaker.
Electronic CrossoverUses active circuitry to send signals to appropriate drivers. Usually more efficient than passive crossovers, however requires additional amplifiers to drive each frequency band.-- Digital, passive, electronic
EnclosureThe box that contains the driver(s).
EqualizerElectronic device used to boost or attenuate certain frequencies. "EQ"
FilterAny electrical circuit or mechanical device that removes or attenuates energy at certain frequencies. See Crossover Network.
Flat ResponseThe faithful reproduction of an audio signal; specifically, the variations in output level of less than 1dB above or below a median level over the audio spectrum.
FrequencyThe number of waves (or cycles) arriving at or passing a point in one second, expressed in hertz (Hz).
Frequency ResponseThe frequency range to which a system, or any part of it, can respond.
Full-rangeA speaker designed to reproduce all or most of the sound spectrum.
HarmonicThe multiple frequencies of a given sound, created by the interaction of signal waveforms.
Harmonic DistortionHarmonics artificially added by an electrical circuit or speaker, and are generally undesirable. It is expressed as a percentage of the original signal. See THD.
Hertz (Hz)A measurement of the frequency of sound vibration. One hertz is equal to one cycle per second. The hertz is named for H.R. Hertz, a German physicist. Also a good place to rent a car when you're on vacation.
High-pass FilterAn electric circuit that passes high frequencies but blocks low ones. See Band-pass and Low-pass filters.
HornA speaker design using its own funnel shaped conduit to amplify, disperse, or modify the sounds generated by the internal diaphragm of the speaker.
HumAudio noise that has a steady low frequency pitch often caused by interference from the AC power line.
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