These common controls offer a variety of important features and optional settings.
Mute switches for inputs and outputs appear as speaker icons located just above in the main Mixer panel. A single switch controls multiple channels, as appropriate for that source. Enabling Mute removes the sound from that source from all downstream audio mixes and outputs.
Tip: Muted sources still show signal activity on the VU meters, but levels are drawn in gray rather than full color. This is also true for sources with Follow set that are not currently audible on output.
One important exception to Mute operation involves recording. The IsoCorder™ feature lets you capture any MIX a/v output (the primary output outputs or directly from hardware audio and video inputs with matching numbers). That is, the audio recorded with the video is taken from the audio input having the same number as the video input. In this latter case, the captured audio is routed directly to the recording module prior to most adjustments in the Audio Mixer, including Mute.
Solo implementations and options vary widely, but all variants provide very useful functions. The Solo feature offers remarkable flexibility without overly confusing complexity.
These are a few basic design concepts:
Enabling Solo for a source sends its (post-fader) sound to the Headphones output and removes all other sources from that output.
Solo has no impact on audio mix (es) sent to any other output.
This Solo feature is normally what it called exclusive Solo (or X-Or type). This means that enabling Solo for a given source disables all other Solo buttons.
It is possible to use what is called Solo latching, ganging multiple sources for Solo output. Hold down the CTRL key and click additional Solo buttons to add or remove their respective audio contributions from the latched Solo group.
Auditioning an Audio Source
It can be very useful to be able to preview one or more audio sources, doing so without allowing the test sound to be audible on Program output. Typically, this need arises in connection with testing microphones or other audio sources to be used in the production.
To audition an audio source in this manner:
Mute the source, removing it from primary outputs.
Enable Solo to hear it on the Headphones output.