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MSV2
Signal Flow
20
Music
Undergraduate 3
05/16/2007

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Term
AUX SENDS
Definition
a. An Output jack on the back of the console (pre / post fader)

b. duplicates the signal and sends it out of the console

- used for headphone (cue) mix in RECORD mode

- used for sending signal to external processors in MIX mode, creating an EFX Loop
Term
channel path RECORD MODE
Definition
Mic Trim Insert AuxSend EQ Fader Pan

Routing
Matrix

Group
Bus

MTR
Term
MTR
Definition
Multitrack Tape Recorder

- a recording destination, such as

1. analog MTR
2. digital MTR
3. ProTools hard disk recording system (MSV)
Term
Insert
Definition
a. An Input / Output jack on the back of the console

b. Used for “inserting” processors into the signal flow path such as Compressors & Noise Gates
Term
Pan
Definition
Mix mode = choose left or right

Record mode = choose odd & even tracks

- works in conjunction with routing matrix
Term
Channel Fader
Definition
set to UNITY GAIN* in RECORD mode

- last gain stage of individual channel

UNITY GAIN - position of Fader (0dB)

* Unity gain means no change in level of signal.
Term
Trim
Definition
a. first gain stage
b. pre-amplifier
c. used to set record level
Term
Routing Matrix
Definition
a.k.a. “channel assignments”

Selects which group bus the signal is sent to. (1/2 3/4 L/R)

If no buttons are pressed, the signal flow will stop “dead in its tracks.”
Term
EQ
Definition
Frequency = Pitch

* Range of Human Hearing = 20Hz - 20kHz (cycles per second)

* 3 Band EQ on Mackie. (Lows, Mids & Highs)
Term
Low EQ (1 knob)
Definition
TYPE = shelving type

- Boost or Cut a fixed range of frequencies

RANGE = 80Hz and below
Term
Mid-range EQ (2 knobs)
Definition
TYPE = semi-parametric or sweepable

- Boost or Cut a Fixed bell-curve width

- Adjustable center frequency of bell-curve within fixed RANGE

RANGE = 100Hz - 8kHz
Term
High EQ (1 knob)
Definition
TYPE = shelving type
- Boost or Cut a fixed range of frequencies
RANGE = 12kHz and above
Term
Direct Out
Definition
- A set of Outputs on the Mixer (*Channels 1-8 ONLY)

- Post (after) -fader

- bypasses the group bus and the routing matrix
Term
Group Bus
Definition
a.k.a. Sub Outs

- A set of Outputs on the Mixer
- Last Gain Stage of console in RECORD mode
- Several channels can be routed to one or more group busses in the Routing Matrix

Ex: for “Sub” mixing
1 2 3 4 L/R
Term
DYNAMIC PROCESSORS
Definition
1. A processor that affects dynamics
(amplitude not frequency.)

Example: Compressor & Noise Gate
Term
Compressor
Definition
1. Reduces the dynamic range of an audio signal by a set ratio if its amplitude exceeds a threshold.

2. Makes Loud parts Softer

a. Threshold - determines when the signal is effected by the compressor

* The signal is effected above the threshold

b. Ratio - the amount of compression
Term
Noise Gate
Definition
Goal = Reduce Residual Noise

- A Noise gate allows a signal to pass through only
when it is above a set threshold: the gate is open. If
the signal falls below the threshold no signal is
allowed to pass: the gate is closed.

*The signal is effected below the threshold
Term
Fully-Parametric EQ
Definition
1.) Adjustable center frequency
2.) Boost or Cut
3.) Q = change width of bell curve
Term
shelving EQ
Definition
all frequencies above or below a certain frequency are boosted or cut by the same amount.
Term
semi-parametric
Definition
generally means a parametric EQ that does not have a Q control (the Q is fixed)
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