Making Clip Channel Selections

A production sound recording often results in a stereo file or a multichannel file that contains distinct data on different channels (for example, a lapel microphone on one channel and a boom microphone on another channel). In such cases, you may want to adjust a stereo clip so that it represents just one of its two channels in the Timeline. You can also adjust a multichannel clip to represent just one of its channels, an adjacent pair of its channels, or six channels. Soundtrack Pro provides two different ways to make these channel selections in a clip.

Using the Shortcut Menu to Make a Channel Selection

Once a clip is in the Timeline, you can select (solo) an individual channel of a stereo file, or you can select an individual channel or various pairs of channels of a multichannel file. The clip retains this channel selection throughout the life of the multitrack project. If you duplicate the clip, the copy also inherits the same channel selection. Changing any one instance of a clip does not affect any other instance. For stereo files, there are two options—channel 1 and channel 2. For six-channel files, there are nine different options. If you select a number of clips that have been separated with the Blade tool, you are able to make the same channel selections as if the clips were still attached. If you select multiple clips, each with a different number of channels, and try to make a channel selection, you can choose from any available mono options or choose All from the shortcut menu to enable all of the channels in your selection.

Note: You can change the channel selection at any time by repeating the following steps.

To use the shortcut menu to make a mono channel selection from a stereo clip
  • Control-click the clip in the Timeline, then choose one of the following options from the shortcut menu:

    • Channel Select > Mono > 1

    • Channel Select > Mono > 2

      Figure. Timeline shortcut menu showing the Channel Select submenu.

The clip waveform display changes to a single (mono) waveform, and the clip functions in the project as a mono file.

Figure. Single (mono) waveform display.
To use the shortcut menu to make a channel selection from a multichannel clip
  • Control-click the clip in the Timeline, then choose one of the options from the shortcut menu.

    If you choose a mono option, the clip waveform display changes to a single (mono) waveform, and the clip functions in the project as a mono file. If you pick a stereo option, the clip waveform display changes to a stereo waveform, and the clip functions in the project as a stereo file.

Separating Channels by Option-Dragging

You can separate the channels of stereo and multichannel clips into individual clips as you drag them to the Timeline. When adding a clip to the Timeline from either the Browser, Bin, or Finder, holding down the Option key while dragging will automatically generate mono clips from a stereo or multichannel file. The dragged clip becomes a vertical stack of clips, with the first under the pointer and the rest on subsequent tracks.

To convert the channels of a stereo or multichannel clip into individual clips as you add it to the Timeline
  1. Option-click the clip in any of the Soundtrack Pro media tabs.

  2. Continue to press the Option key as you drag the clip to the Timeline.

    Figure. A stereo file dragged from the Browser to the Timeline.
    Figure. A stereo file split into two mono files in separate tracks.

The dragged clip becomes a vertical stack of clips, with the top clip under the pointer and the rest on subsequent tracks. If you dragged a stereo clip, the stack consists of two clips, one for each channel. If you dragged a six-channel clip, the stack consists of six clips, one for each channel.