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4 - The PatchMix DSP Mixer
Main Section
E-MU Digital Audio System 35
Auxiliary Effects & Returns
f The Wet/Dry mix
setting in the effect
should normally be set to
100% when the effect is
inserted as a sidechain
effect. This is because the
Aux Return Amount will
control the wet/dry mix.
The section immediately below the TV Screen is where you assign the Auxiliary Effects.
In a traditional mixing console, auxiliary effects sends are used to send part of the signal
to outboard effect devices, then return the effected signal back into the mix using the
effect returns. This is called a sidechain routing because the aux signal takes a detour
through the effects before being summed back into the main mix.
Sidechain effects are usually effects that you might want applied to several channels,
such as reverb. Effects such as EQ and compressors are usually NOT used as sidechain
effects because they can cause unpredictable results when returned to the main bus.
You can also use the Auxiliary Sends as two extra mix buses. By turning the Aux Return
amount all the way down and dropping an Insert Send into the chain, you can send the
Auxiliary bus to any output you wish. See “Insert Section” for more information.‚
Sync/Sample Rate Indicators
The Sync/Sample rate Indicators show the current session’s
sample rate and whether it is internal or slaving to an external
source. The LEDs indicate which sample rate is currently in
effect. If an external source is being used, the Source display
reads “EXTERNAL”.
When slaving to an external master source, the clock may drift
slightly or change dramatically (i.e. abrupt sample rate change
or unplugging of physical master source). PatchMix DSP is
tolerant to minor drifting within the supported rates of 44.1k,
48k, 88.2k, 96k, 176.4k, but if the sample rate drifts out of
this range the “LOCKED” LED will extinguish.
If the external clock source makes a radical sample rate change from the lower rates of
44.1k/48k to a higher rate or between the rates of 88k/96k and 176k/192kHz, the
hardware automatically switches to internal 48kHz clock until the proper external clock
is restored. The “LOCKED” LED will be off and the two units are NOT synchronized.
Always check the “LOCKED” LED when using an external clock source.
Main Bus
Side
Chain
Input
Fader
Mute
Output
Return
Amount
Send
Amount
Input
Pan
Aux
Amt
Aux
Amt
Aux Bus
Sidechain Diagram
(Post-Fader Aux Sends)