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MENU AND DIALOG REFERENCE1416
Use multi-core audio rendering
Reason fully supports MultiCore Audio Rendering. This means that if your computer has multiple CPU cores (quad-
core, for example), or multiple CPUs, Reason takes advantage of this to significantly enhance the performance. If
your computer has a multi-core CPU, or multiple CPUs, MultiCore Audio Rendering is active by default.
See “Audio Basics” for more information on how Reason handles audio.
Use hyper-threading audio rendering
As from version 9.5.1 Reason supports hyper-threading also for the audio processing. This could be worth enabling
if you are using a multi-core CPU and should experience performance problems. Note, though, that enabling hyper-
threading doesn’t necessarily solve all types of performance problems.
Render audio using audio card buffer size setting
The “Render audio using audio card buffer size setting” function should be selected (checked) for best plugin perfor-
mance. When selected, the audio batches are rendered internally according to the set Buffer size (see “Buffer size”
above). For example, if you have a Buffer size of 512 Samples, each audio batch will be 512 samples internally. Rais-
ing the Buffer size will let Reason process larger audio batches in one go, which is often more efficient. Many plugins
are also more efficient when doing larger audio batches. if you are using DSP-heavy VSTs (mastering effects, for ex-
ample), these will run a lot smoother with this function selected.
! Note that old songs might sound different with this function selected, if the songs uses feedback routings and
CV connections.
If unchecked (off), all audio batches are rendered internally at a fixed size of 64 samples - regardless of the Buffer
size setting. This might be desirable if you are using feedback signal routings and CV connections in your songs, and
want the internal latency of those connections to be fixed at a short value all the time. This might result in perfor-
mance problems for DSP-heavy VSTs, though.
Unchecked will give the same performance as in previous Reason 10 versions.
Monitoring
In the Monitoring section you can choose how you want monitoring of the input signals to work on audio tracks.
D Select “Automatic” to automatically monitor the input signals on all record enabled audio tracks when record-
ing and when the sequencer is stopped.
Record enabling of audio tracks is done by clicking the Record Enable button on the track in the track list - see
“Record enabling”.
! Note that if you have selected “Standard” in the “Master Keyboard Input” section on the “MIDI” page in Pref-
erences (see “The Master Keyboard Input setting”), selecting an audio track also automatically record enables
it - and consequently enables monitoring in “Automatic” mode.
D Select “Manual” to manually activate monitoring by clicking the Monitor button on the track in the track list.
D Select “External” if you are monitoring directly through your audio interface outputs (and not via the Reason
application) - or via an external mixer.
In “External” mode it’s not possible to monitor in Reason.
Play in background
When this is activated, Reason will not “release its grip” on the audio hardware when another application is active.
• The advantage is that Reason will keep playing while you work in the other application.
• The disadvantage is that other audio applications may not be able to play any audio, depending on the type of
driver used.