Apple MainStage 2 - Manual (Page 167)

• Audio Input pop-up menu: Choose the device you want to use as the source for audio
input.
• Setup buttons: Click the Audio Output Setup button to open the Audio/MIDI Setup
window and configure audio output. Click the Audio Input Setup button to open the
Audio/MIDI Setup window and configure audio input.
• I/O Buffer Size pop-up menu: Choose the size of the buffer for audio input and output
in samples. Smaller buffer sizes reduce the amount of latency, but also require more
work from the CPU and may result in playback artifacts. You may want to try different
settings to find the lowest setting that does not produce any artifacts.
• I/O Safety Buffer checkbox: When selected, MainStage uses an additional buffer to process
audio output streams, providing a safeguard against crackling noises that may occur
when using very low I/O Buffer Size settings. If turning on this preference doesn’t
improve things on your system, disable the checkbox and select a larger I/O buffer size
setting.
Note: Use of the I/O Safety Buffer preference increases the output latency and therefore
the round trip (input plus output) latency.
The latency for the current buffer size is displayed below the I/O Safety Buffer checkbox.
• Sample Rate pop-up menu: Choose the sample rate for audio input. If you are using an
audio interface or other audio device with MainStage, the Sample Rate value should
be set to the sample rate of your audio device.
• Apply Changes button: Click to apply changes to the input, output, sample rate, and
buffer size settings. If you do not click the Apply Changes button, changes are applied
when you close the Preferences window.
• Silence Previous Patch: Choose the amount of time sustained notes and effects tails
continue to sound before falling to silence when you select a new patch.
• Hot-Plug Behavior pop-up menu: Choose what action MainStage takes when you hot-plug
an audio device while MainStage is open. The choices are:
• Alert me: Displays an alert when a device is hot-plugged. The alert includes buttons
allowing you to use or ignore the device.
• Automatically Use Device: Switches the audio drivers to allow immediate use of the
hot-plugged device for audio input and output.
• Do Nothing: Does not switch the audio drivers.
• Display audio engine overload message: When selected, an alert appears when the audio
engine overloads.
Recording
• Output pop-up menu: Choose the audio output to record.
167 Appendix C Setting MainStage Preferences