AV News 200- May 2015
Audio Clip Volume
The volume of each audio clip can be individually adjusted. Double-click on the waveform to go to audio settings and then adjust the Volume setting on the right. Either type a value into the box or click the little arrow at the right and drag the slider.
Note that this volume setting applies in addition to any volume adjustment by the envelope.
Linking
An audio clip can be linked to a slide so that when the slide is moved on the timeline, the audio clip also moves. However the audio clip can be moved relative to the slide without the slide moving. The best way to understand this is to try it.
Make sure you have three slides and an audio clip on the time line. Shorten the audio clip by dragging its ends until it is about five seconds long. Position it roughly underneath the second slide. Select the second slide by left clicking. Right click the audio clip and then left click on the option ' Link Audio Clip To Slide 2 '. The clip is now linked to slide 2 and an arrow and the number 2 appears in the waveform to denote this, as shown in Figure 4( Page 11). Experiment by moving the slide and then moving the audio clip and listening to the result.
Another way of linking a clip to a slide is from the Audio tab. Double-click on a waveform to open the Audio tab with the corresponding wave file already selected. Check the ' Link to slide ' checkbox in the settings on the right and then select or enter the slide to link to. A slide can have more than one audio clip linked to it, but not vice versa.
Note it is advisable to reserve one audio track for linked audio clips. All audio clips in this track should be linked. The reason for this is that when a clip moves, due to its linked slide being moved, any unlinked audio clips to the right are also moved. Note also that if you delete a slide with linked audio clips, the audio clips are also deleted.
Applications- Starting on time Synchronising the start of the music with the appearance of the first slide in a sequence creates a good first impression and is very easy to do.
To adjust the point at which the music starts, drag the whole audio file right to increase the delay or left to decrease it. If the delay can ' t be reduced sufficiently because the left edge of the audio file hits the edge of the window first, drag the edge of the audio file to the right before dragging the whole file.
Adding sound effects
An example of this might be adding an appropriate bird call to a particular slide. Find a suitable recording containing the call. Don ' t worry if there are extra sounds in the file. Add the audio file to the timeline and then adjust one or both ends of the clip until just the section you are interested in remains.
Adjust the volume of the whole clip or use the volume envelope if some parts need to be adjusted more than others. Then link the clip to the relevant slide so that if you move the slide the sound effect stays with it.
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