Avalon VT-737SP, Руководство по эксплуатации

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Glossary
Page 51 Avalon Vt-737sp Operation Manual
dBm - Decibels referenced to 1 milliwatt.
dBu or dBv - Decibels referenced to 0.775 volt.
dBV - Decibels referenced to 1 volt.
de-ess - Using a frequency-dependent function
in a compressor to reduce excessive sibilance
(”sss, “sh”, and “ch”) sounds.
detent - A point of slight physical resistance (a
click stop) in the travel of a knob or slide control.
dynamic microphone - A microphone that
operates by electromagnetic induction to gener-
ate an output signal. When an electrically con-
ductive coil of wire or ribbon is made to cut
across the flux lines of a magnetic field, a current
of specific magnitude and direction is generated
within that coil or ribbon.
dynamic range - The range between the maxi-
mum and minimum sound levels of an audio
system. It is usually expressed in decibels as the
difference between the level at peak clipping and
the level of the noise floor.
equalizer - A frequency-dependent amplifier
that controls the relative amplitude of various
frequencies in the audible bandwidth. The equal-
izer lets you exercise tonal control over the
harmonic content or timbre of a sound.
EQ curve - A graph of the response of an equal-
izer, with frequency on the x (horizontal) axis and
amplitude (level) on the y (vertical) axis. Equaliz-
er types and effects are often named after the
shape of the graphed response curve, such as
peak, dip, shelf, notch, knee and so on.
fade - A slow change in volume.
fader - A linear attenuation device or linear
volume control.
feedback - The returning of a loudspeaker
signal back into a microphone feeding the loud-
speaker. Excessive feedback results in unpleas-
ant, screaming sounds usually at particular,
high frequencies.
filter - A simple equalizer designed to remove
certain ranges of frequencies. A high-pass filter
(also called a low-cut filter) reduces or elimi-
nates frequencies below the cutoff frequency.
There are also high-cut (low-pass) filters, band-
pass filters, which cut both high and low
frequencies but leave a band of frequencies in
the middle untouched, and notch filters, which
remove a narrow band but leave the high and
low frequencies alone.
flanging - A process whereby a delayed signal
is combined with itself undelayed. The delay is
varied to create continual changes in sound.
frequency - The rate at which a sound wave
repeats a cycle. The number of cycles that
occurs over the period of one second is called
hertz (Hz). Often, the perceived range of hearing
is from 20Hz to 18,000Hz.