Manual

6 - Appendix

Using High Sample Rates

E-MU 1616/1616M CardBus Digital Audio System 81

6 - Appendix

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. 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:

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.

 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.

• 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 ASIO (4 stereo) channels at 88k/96k,

and 4 ASIO (2 stereo) 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

Analog & S/PDIF Session

Analog & ADAT Session

S/PDIF & ADAT Session

Select the Type of Session you need

1. Select New Session from the PatchMix

DSP toolbar.

2. Choose the 176k/192k tab.

3. Select the Template that meets your

requirements and click OK.