Changing the volume of an audio clip
You can raise or lower the volume of an audio clip, which initially registers a flat dB level (zero). (dB, otherwise known as decibel, is the relative loudness of the sound.) The volume can be increased or decreased from the original setting — each unit on the scale is an exponential change.
To adjust the volume of an audio clip:
n Move the Overall volume (dB) slider left or right to the desired level.
Note: When you click Play to listen to your changes, watch the Left Level and Right Level meters to be sure the audio is not clipping and adding distortion. The indicator(s) reaches the far right area of the meter and the end clip turns red when the audio is clipping — the volume should be reduced.