Echo Audio MiaMIDI Owner's Manual download pdf (Page 56)

VxD console – Gina24 and Layla24

Let’s take a brief look at the various synchronization types.

Word Clock – This is a synchronization signal that connects to the BNC

connector labeled Word Clock on Layla24’s back panel. This synchronization

clock runs at the selected sample rate. Think of it as a kind of electronic

metronome, which clicks back and forth at the digital sample rate. It is one of the

most widely used forms of synchronization in digital audio. Layla24 is always

generating Word Clock on its Word Clock output BNC connector. Although it can

generate Word Clock at any sample rate it is set to, Layla24 can only sync to Word

Clock if the master device is set to a sample rate between 30kHz and 100kHz.

Otherwise you will get noise and/or loss of sync.

S/PDIF – The Sony/Phillips Digital Interchange Format is a serial bit-stream that

has a clock signal embedded in the data stream. When recording from an S/PDIF

source, whether via optical cables or RCA cables, Echo products will utilize the

synchronization clock that is embedded in the S/PDIF while it decodes the

bitstream. Your Echo digital audio system can only sync to S/PDIF clock if the

master device is set to a sample rate between 30kHz and 50kHz. Otherwise you

will get noise and/or loss of sync.

Note: When recording from a S/PDIF port, you must select S/PDIF as the

input clock. For greater flexibility, this is not done automatically. If you

find that your S/PDIF recordings contain pops or skips, be sure that you

have selected S/PDIF as your input clock.

ADAT – (Layla24/Gina24) The Alesis ADAT optical interface can send and

receive up to 8 simultaneous channels of digital audio data over fiber optic cables.

Unlike wire cables, fiber optic cables do not add noise or interference.

Layla24/Gina24 can send out (or “master”) ADAT clock as well slave to it. If you

want the interface to slave to an ADAT clock, just set the input clock to the ADAT

setting. Layla24/Gina24 can only sync to ADAT clock if the master device is set to

a sample rate between 40kHz and 50kHz. Otherwise you will get noise and/or loss

of sync.

VxD console – Gina24 and Layla24

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Echo Audio MiaMIDI Owner's Manual Page 56