User Manual

UAD Powered Plug-Ins Manual - 43 - Using UAD Powered Plug-Ins
Misc Settings
(Mac OS)
Release all DSP resources on AudioUnit bypass
Some Audio Unit hosts dynamically bypass plugins when they are not being
used during playback, for example when no audio is present at the current
playback position. As of version 3.9.0, UAD plugins are no longer un-
loaded/reloaded each time the host performs this dynamic bypass. Instead,
the UAD plugins stay loaded on the card, which reduces playback glitches.
Checking the “Release all DSP resources on AudioUnit bypass” option will un-
load UAD plugins from the card during dynamic bypassing. When the option
is checked, UAD DSP usage may be reduced during dynamic bypassing, but
the possibility of glitching during playback is increased.
Note: This setting affects the Mac OS X Audio Units platform only.
Force Logic Live Mode
When UAD v4.3.0 (and higher) and Logic 7.2.1 (and higher) are used to-
gether and this setting is checked, all Logic tracks with UAD plugins are
forced into "Live Mode" and latency is reduced. Reduced latency is useful for
tracking when Logic's Software Monitoring feature is active.
When Live Mode is active, UAD latency is twice the hardware I/O buffer
size. In Logic versions prior to 7.2.1 (and later versions when live mode is dis-
abled), UAD latency is determined by the larger of the hardware I/O buffer
size and the Process Buffer Range setting within Logic. Since the minimum Pro-
cess Buffer Range setting ("Small") in Logic 7 corresponds to 512 samples,
this means the minimum possible UAD latency is 1024 samples (the current la-
tency is displayed in the UAD Meter System Information window) when Live
Mode is inactive.
Note: On dual processor machines Live Mode forces all plugins on tracks
with UAD plugins (and any aux/busses fed by those tracks) to run on one pro-
cessor only. To allow host plugins to run on both processors under these con-
ditions, deactivate this setting.