User Manual

AUDIO BASICS
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Buffer Size settings
The Buffer Size can be adjusted on the Audio tab in the Preferences dialog (accessed from the Edit menu (Win) or
Record menu (Mac)):
D Select Buffer Size by clicking and dragging the slider sideways.
The trick here is to find the optimum relationship between audio quality, DSP Load and latency. Experiment with dif-
ferent Sample Rate settings in combination with different Buffer Size settings to get the best result.
A professional audio interface used together with a state-of-the-art computer should normally be able to handle a
combination of a high sampling frequency (96 kHz) and a small Buffer Size (64-128 samples) without problems. A
budget priced audio interface normally requires a lower sampling frequency (44.1 kHz) in combination with a little
higher Buffer Size (256-512 samples).
See “About latency” for more information about buffer size and latency.
CPU Usage Limit settings
In the “Miscellaneous” section on the “General” page in Preferences, you can define an upper limit for the CPU us-
age. If the DSP Load should exceed this set limit, the Record application will stop receiving and outputting sound. If
this happens, you might have to change the audio settings (see “Sample Rate settings for recording and playback”
and “Buffer Size settings”) - or remove tracks and/or devices from your song. By default, the “CPU Usage Limit” is set
to 80%. This is where the CPU load usually starts to make the sound crackle and distort.
About MultiCore Audio Rendering
Record fully supports multicore audio rendering. This means that if your computer has multiple CPU Cores (Dual
Core or Quad Core, for example), or multiple CPUs, Record takes advantage of this to significantly enhance the per-
formance. A higher system performance allows for more tracks and devices in your songs.
If your computer has a multi-core CPU, or multiple CPUs, MultiCore Audio Rendering is active by default, as indicated
on the “General” page in Preferences: