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Opening Audio Clips

The source view works the same for audio clips as for movie clips—except that instead of showing the current frame of video, it depicts the audio as a waveform—a kind of graph of the audio’s power over time. Monophonic tracks appear as a single waveform; stereophonic tracks appear as two waveforms (Figures 5.5 and 5.6). Often, you can identify particular sounds by examining the audio waveform. Powerful beats in a song are depicted as spikes in the waveform; silence or pauses between lines of dialog result in flat horizontal lines in the waveform. Because the waveform depicts audio over a span of time (as opposed to a single video frame), the source view can display other information, as well. A vertical line indicates the current time—the position of the playback head, if you will. In addition, icons for clip markers and In and Out points appear at the top of the source view, with vertical lines extending from them to help you see their positions in terms of the waveform. Furthermore, the area between the current In and Out points is shaded lighter so you can see your selection as well as hear it (Figure 5.7). (See the section “Setting In and Out Points,” later in this chapter.)

Figure 5.5. In the Monitor window, monophonic audio clips appear as a single waveform...



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