Meyer Sound Galileo GALAXY 408, User Manual

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APPENDIX B: CLOCKING
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DIGITAL LATENCY
GALAXY processors feature fixed latency across all output channels, regardless of the processing applied. The analog
latency for GALAXY processors (AD/DA) is fixed at 0.5968 milliseconds. GALAXY processor AES3 inputs have sample rate
converters that support a range of sample rates. Changing the sample rate can increase the latency to approximately four
times this value, depending on the sample rate selected.
NOTE: While each GALAXY processor has fixed latency, overall system latency from a local GALAXY
processor’s (Talker) physical analog outputs and any remote GALAXY processors’ (Listeners) physical analog
outputs can vary. To ensure proper alignment, measure the delay between the local GALAXY processor’s
physical analog outputs to any remote GALAXY processor(s) physical analog outputs using an accurate audio
analyzer (such as Meyer Sound’s SIM System).
INPUT SAMPLE RATES
With the ASRC enabled, the GALAXY processor can accept a range of sample rates for AES inputs (see Table 4). To use
AVB inputs, a common clock must be selected.
AES3 OUTPUT SAMPLE RATES
If an AES3 or Word Clock input is selected as the AES output clock source (GALAXY 816-AES3 processor only), then the
following sample rates may be used:
•
44.1 kHz
•
48.0 kHz
•
88.2 kHz
•
96.0 kHz
•
176.4 kHz
•
192.0 kHz
Table 4: Accepted Input sample rates and bit depth based on format
Format Input Sample Rates Accepted (kHz) Bit Depth
AES3 20 – 216 up to 24 bit
AVB 48 or 96 24 bits in 32 bit
integer