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Apollo Solo Manual Working With Apollo Solo 44
I/O Buffering
I/O buffering is the shuttling of audio data back and forth between the DAW and the
audio interface. The DAW’s I/O buffer size setting determines the amount of input
latency when software monitoring via the DAW. Smaller buffer sizes reduce latency, but
increases CPU loading of the host computer. Lower buffer sizes do
not increase UAD
DSP loads.
Using Console or LUNA to control Apollo Solo’s input hardware monitoring completely
bypasses DAW I/O buffering, so there is no input latency, regardless of DAW’s I/O buffer
size setting.
Note: LUNA Recording System manages I/O buffer settings automatically.
Software Input Monitoring
Software input monitoring refers to using the DAW’s software mixer for monitoring live
inputs instead of hardware input monitoring via the audio interface. Software input
monitoring allows plug-ins (UAD or otherwise) loaded in a DAW to process live inputs,
but the monitored signals are subject to the input latency caused by DAW I/O buffering.
Note: The DAW’s software input monitoring feature is enabled by default. To
prevent doubled signals at Apollo Solo’s outputs when software monitoring via the
DAW, Apollo Solo’s hardware monitoring must be disabled by muting Console’s
inputs.
Hardware Input Monitoring
Hardware input monitoring means an audio interface’s inputs are routed directly to its
outputs, which avoids discernible audio latency by eliminating DAW I/O buffering. Apollo
Solo features low-latency hardware input monitoring via its internal digital mixer, which
is controlled by Apollo Solo’s companion Console or LUNA applications.
Note: Apollo Solo’s hardware input monitoring is active by default. To prevent
signal doubling at Apollo Solo’s outputs when hardware input monitoring via
Apollo Solo’s Console, the DAW’s software input monitoring feature must be
disabled.
Delay Compensation
Various sources of input and output latency are inherent in complex digital audio
environments. However, when the DAW and Console are properly configured and
operated, all time and phase alignment of all audio within a session is managed
automatically by the DAW’s delay compensation feature. See
Delay Compensation with
Apollo Solo and Latency Basics for more information.
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