Using High Sample Rates; Overview; E-Mu 1616 System At 176Khz Or 192Khz - E-Mu 1616 Owner's Manual

6 - Using High Sample Rates

Overview

When operating at 176.4k or 192k sample rates, the mixer functionality and number of
I/O channels are slightly reduced. These changes are summarized in the following
tables. The number of ADAT channels also decreases at the 88k/96k and 176/192k
sample rates (due to the bandwidth limitations of the optical components).
When using 88.2kHz, 96kHz, 176.4kHz or 196kHz sample rates:
• Effect processors are disabled. (Output sends & returns are still available.)
• ADAT is reduced to 4 channels at 88k/96k, and 2 channels at
176k/192kHz.
• ASIO channels are reduced to 8 stereo ASIO channels at 88k/96k,
and 4 stereo ASIO channels at 176k/192kHz.
• At the 176.4kHz & 192kHz sample rates, the number of physical
inputs and outputs is reduced.
• At the 176.4kHz & 192kHz sample rates, S/PDIF optical is disabled
The ADAT optical interface was originally designed to carry 8 channels at a 48kHz
sample rate. We use the Sonorus® S/MUX™ standard to encode audio with higher
sample rates onto the ADAT light pipe. In this multiplexing scheme, two ADAT channels
are used to carry one 88.2k or 96k stream and four ADAT channels are used to carry one
176k or 192k audio stream. In order to use the ADAT interface at these higher sample
rates, you must have other equipment that supports the Sonorus S/MUX standard.

E-MU 1616 System at 176kHz or 192kHz

At the 176.4kHz or 192kHz sample rates you have 4 inputs and 10 output channels.
There are three possible input configurations when using the E-MU 1616 system at these
high sample rates.
1. Keep all Analog I/O, but lose S/PDIF
2. Keep all Analog I/O, but lose ADAT
3. Keep S/PDIF & ADAT, but lose Line Inputs 2L/2R & Line Outputs 3L/3R
Selecting a 176/192k Session
The three possible input configurations
are selected by choosing a session
template containing the desired I/O from
the New Session window. Once you have
selected one of the three session types,
you will not be able to change to another
type without starting a new session.
Select New Session from the
1.
PatchMix DSP toolbar.
Choose the 176k/192k tab.
2.
Select the Template that meets your
3.
requirements and click OK.
E-MU Digital Audio System
6 - Using High Sample Rates
Overview
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