Mobile Audio Baffles. People. Rooms sound a lot different once
all the MABs show up! (JT Burke, Heifer Sound)
1. The main speaker(s) for a room.
2. The output and/or control of a mixer which sends the signal
to the main speakers (master control).
1. The main control over a number of other controls on a device.
Most common example is on a mixer--each channel has a fader;
there is also a master fader which controls the overall output
of all the channel faders. The auxilliary sends function the
same; each channel has an auxilliary control, but there's also
a master auxilliary control. The master control is the final
overall volume control on an output.
2. In MIDI, a device that controls another (slave).
A connector usually used to mate with the binding posts on
the output of power amplifiers. Plugs directly into the binding
posts. Has two posts, one for the positive, one for the negative.
Also known as a banana plug.
Noise that's produced by the physical motion of something.
Most commonly refers to the noise heard from a microphone that's
being handled or noise picked up by a microphone through the
cable or microhone stand.
Millions of cycles per second. Abbreviated Mhz. Typically refers
to the radio frequencies of wireless micropone systems.
A device that gives a definable measurement of something. In
audio, usually refers to the dBm or VU meters which indicate
signal level on a mixer or other device. Can be in the form
of an analog meter, or digital (LED display) meter.
A transducer which trasforms acoustical energy into mechanical
energy, and then electrical energy. A device that changes sounds
into tiny voltages that can then be amplified, modified, recorded,
see condensor; cardioid; dynamic; hypercardioid; omnidirectional;
ribbon microphone; supercardioid
1. A (usually) plastic device that threads onto the end of
a microphone stand which holds a microphone. Some clips allow
the microphone to just slip in, others are spring clips which
require the user to open the clip with one had while inserting
the microphone with the other. All clips are not the same; since
microphones come in different sizes and shapes, each comes with
its own specific clip. Be sure you use the right clip so the
microphone doesn't fall out or break the clip.
2. In a lapel microphone system, the plastic device that holds
the microphone to a spring-loaded clothes-pin type clip. This
allows the microphone to be clipped/attached to a persons clothes.
The part of a microphone which actually senses the sound waves
and converts it to electrical energy. Separate from the body
of the microphone, the windscreen, etc.
An electrical audio signal that's -40 dBu or lower. (Different
sounds produce different output levels, similar sounds produce
different output levels on different microphones.)
An amplifier which brings the low-level microphone signal up
to a line-level signal. The gain or trim control on a mixer
controls the amount of amplification on a mixer.
An upright device that holds a microphone. Can be in the form
of a single vertical pipe (fixed or adjustable in height) with
a weighted base, a short fixed pipe with a base (floor stand),
a 3-leg tripod base with a vertical pipe (usually adjustable
in height), etc. Several additional adapters are available to
allow the stand to work in different ways, i.e., booms, trees,
etc. Sometimes microphone stands are used to hold signs and
even small hotspot (powered or not) monitors.
An adapter that fits on a microphone stand that allows a single
stand to hold 2, 3, 4, 5, or sometimes even 6 microphones at
once. This helps keep the number of microphone stands down,
but can also create problems with all of the cables being under
the same stand!
Accronym for Music Instrument Digital Interface. A physical
and interchange standard for connecting digital instruments
and devices to allow control of triggering a keyboard or multiple
keyboards to play given notes. Also used for recording from
the keyboard to the computer.
A connector that looks like a 1/4" phone connector, but
is smaller. Instead of bein 1/4" diameter, a mini connector
is 1/8" diameter. Used for headphone connectors especially
on portable audio players (tape/CD, etc.). Available in both
mono (TS) and stereo (TRS) configurations.
A digital audio recording format that uses a small disk similar
to a computer floppy disk.
see digital; disk
The process of adjusting levels and equalization of multiple
input sources (live, recorded, or both) to produce a pleasing
combination of sounds.
To mix several input sources (usually from pre-recorded multitracks)
to one or two outputs. Usually refers to recording.
A device which takes many inputs and combines them into a single
output. Different models may take either line or microphone
level inputs, mix into more than one combined output signal,
or change the signal's tone.
Changing a radio signal so that it transmits an audio signal.
When a receiver picks up the modulated signal, it converts it
back into the original audio signal.
1. To listen to a specific sound or set of sounds.
2. The system of mixer sends, equalizers, amplifiers, and speakers
that allow the talent to hear themselves and others.
3. A monitor speaker.
see also monitor send; monitor speaker
When the signal from a stage monitor goes to a place where
it shouldn't be, i.e. when the monitor sound is heard in the
audience seating area.
A mix signal on a mixer designed to provide a feed to monitor
speakers separate from the main speakers. This allows a different
mix (of input signals) to go to the monitor speaker than the
main house mix. Also called foldback or auxiliary. Depending
on the operator, the performer, and the console being used,
the monitor sends may be pre-fader or post fader. Most typical
is pre-fader which keeps the level of the monitor mix the same,
regardless of where the fader is set. Post-fader sends vary
the output to the monitor mix based on the fader setting.
A speaker used in the monitor system. Monitor speakers are
usually much smaller than the main speakers and are designed
to sit on the floor and be positioned at several different angles.
Some monitors are the size of a shoebox and are set on top of
a microphone stand. Such monitors are called "hot-spots"
because they deliver a monitor signal to a small area, usually
just one person.
mono (or monaural)
One sound, one channel, one signal, literally one ear. Can
be multiple channels combined into one (mono) output or one
signal feeding multiple speakers.
Abbreviation for multiple.
1. A multi-pair cable which conducts multiple signals in one
overall cable (jacket) commonly refered to as a snake.
2. A parallel connection of multiple audio circuits as in one
output being wye-d into multiple inputs.
When a wireless reciever sees multiple signals arriving at
the same time. These signals from the transmitter have been
reflected off surfaces and are not always direct from the transmitter.
Signals in phase with each other will add up while signals out
of phase will cancel one another, resulting in a drop out.
see also drop out
A play & record unit (tape machine) that's capable of more
than one track or channel. Totally separate signals can be recorded
on the same tape (on different tracks/channels) and not interefere
with each other. Can be an analog tape machine, or digital on
tape or to a computer or similar storage device.
To silence. Commonly refers to a feature on larger mixers where
a button (switch) on a channel will silence (turn off) the input
source (microphone, tape playback, etc.). Used so that fader
and auxiliary sends (post-mute) can be turned off without having
to turn down the control (fader or rotary knob) and lose the
settings. Some wireless microphone transmitters have a mute
switch which silences the microphone but leaves the power on
to keep the reciever locked-onto the transmitted signal.
A feature on some mixers that allows any set of given channels
to be assigned to a "mute group" such that when the
mute group's master button (switch) is engaged, it mutes all
channels assigned to it.