Audio attributes

Presets:

select an option from this menu to have all the project settings set to one of the known standards. Some of the options are 1080P/24, 1080I, 720P/60, PAL, NTSC, YouTube, and CD audio.

Tracks:

(in New Project menu only) sets the number of audio tracks for the new project. Tracks can be added or deleted later, but this option is on the New Project menu for convenience.

Samplerate:

sets the samplerate of the audio. The project samplerate does not have to be the same as the media sample rate that you load. Media is resampled to match the project sample rate.

Channels:

sets the number of audio channels for the new project. The number of audio channels does not have to be the same as the number of tracks.

Channel positions:

the currently enabled audio channels and their positions in the audio panning boxes in the track patchbay are displayed in the channel position widget in the Set Format window. You can see this display on the left side in figure 3.1 above. Channel positions are not in New Project window.

The channels are numbered. When rendered, the output from channel 1 is rendered to the first output track in the file or the first sound card channel of the sound card. Later channels are rendered to output tracks numbered consecutively. The audio channel positions correspond to where in the panning widgets each of the audio outputs is located. The closer the panning position is to one of the audio outputs, the more signal that speaker gets. Click on a speaker icon and drag to change the audio channel location. The speakers can be in any orientation. A different speaker arrangement is stored for every number of audio channels since normally you do not want the same speaker arrangement for different numbers of channels.

Channel positions is the only setting that does not affect the output necessarily. It is merely a convenience, so that when more than two channels are used, the pan controls on the timeline can distinguish between them. It has nothing to do with the actual arrangement of speakers. Different channels can be positioned very close together to make them have the same output.