Appendices : Appendix III Optional Features
31 - 787
ASIO
For details of the capabilities you can expect when using the Merging Technologies RAVENNA ASIO / Core Audio
Driver please see:
http://www.merging.com/uploads/assets/Installers/ravenna/ASIO/Merging%20Ravenna%20ASIO%20Guide.pdf
RAVENNA ASIO Driver overview is available here:
http://www.merging.com/products/networked-audio/for-3rd-party-daw
Wordclock settings.
In DSD mode it is imperative Pyramix wordclock settings correspond with the requirements of the converters
employed. To date all the DSD compatible converters we have tested generate and expect wordclock at the stan-
dard nominal rate. I.e. 44.1kHz.
Failure to set Pyramix to expect only 44.1kHz in DSD operation will prevent proper locking to the external source
and therefore prevent correct decoding of the DSD bitstreams, resulting in very loud noise on its outputs. Check
the setting via:
Settings > All Settings > Formats & Sync
make sure that the "Wordclock is Input at 44.1k x 2" check-box is NOT checked when operating in DSD mode.
To verify Pyramix is correctly locked to incoming Word clock:
Left-click on the red 'LED' in the Sync: WordClock box (bottom right of Pyramix screen in the status bar). This will
open the I/O status window The green LEDs indicate active inputs and there will be a red LED in front of the cho-
sen sync source if this is locked.
Right-click on the same (Sync: WordClock) red 'LED'. Select, Debug > Input Check. This window will enable you
to check that Pyramix is effectively locked at the correct frequency.
Project Types
DXD versus DXD Mixing
In principle both modes will produce essentially the same results in the resultant file.
The subtle differences occur only in the way in which signals are managed in the Pyramix mix engine, in particular
when displaying the Peak or VU meters, as well as in certain plugins, especially in the side chain of Dynamic Pro-
cessing. In 352.8 kHz mode, no filtering is applied above 20 kHz while a gentle low-pass filtering will be applied in
DXD mode to avoid being affected by possible High Frequency noise that could be contained in the source mate-
rial (either by conversion from DSD source material or A/D converters presenting significant levels of High Fre-
quency noise due to their Sigma-Delta Noise shaping topology.
So, Merging recommends operating by default in DXD mode, unless one specifically wants to assess how much
energy (inaudible) is present in the signals above 20 kHz.
When using exclusively DXD material originating from Horus or Hapi AD8P or AD8DP converters (which exhibit
ultra-flat noise up to and beyond 100 kHz) there should be very little difference between modes.
To Next Page
Loading...