Auxiliary Effects & Returns; Sidechain Diagram; Sync/Sample Rate Indicators - E-Mu 404 Owner's Manual

4 - The PatchMix DSP Mixer
Main Section
Auxiliary Effects & Returns
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

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, and 96k, 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 of 96k, 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.
34
Input Input

Sidechain Diagram

(Post-Fader Aux Sends)
Pan
Fader
Aux
Mute
Amt
Send
Amount
Aux
Amt
Aux Bus
"Insert Section" for more information.‚
Return
Amount
Side
Chain
Main Bus
Output
The Wet/Dry mix
f
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.
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