Sonnox Oxford SuprEsser - Manual (Page 12)

3.2 Resolution, Kernel
Sizes, and
Delays 3 OPERATION
3.2.2 Over-Taxing
the
Host
The Oxford SuprEsser uses a process called convolution to implement filtering, a process
that is expensive on CPU resources. When using very large kernel sizes, in combination
with small audio buffer sizes, it is possible for the plug-in to take longer than an entire
audio block to complete processing, with the result that (from a monitoring point of view)
the playback breaks up. This can manifest as obvious clicks and pops, or more subtly as
occasional quiet clicks.
Note:
If you experience clicks, keep in mind that these are monitoring only. They will not be
present when bouncing down your mix.
If you experience clicks, increasing your audio buffer size will resolve the issue. Once
again, the best buffer size for the Oxford SuprEsser is the same as the kernel size (or
resolution). Generally speaking, the only reason for small audio buffer sizes is for tracking,
or live working requirements.
The plug-in issues a red warning label next to the Sonnox button when you are using a
combination of small buffer size and large kernel size that we have found to generally
result in clicks. This is not a reliable indicator, however; it completely depends on your
system CPU speed, sample rate, and other factors.
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