CIS 421 ›Premiere >Audio Effects
Premiere Audio Effects
Audio Effects
- Audio effects on audio clips work change the way audio sounds
- You can change the way an audio clip sounds by adding audio effects to all of it or to a selected part of the clip
- Keyframes work for some audio effects, just as they do for audio effects
- To vary how the audio effect appears on the clip,
- you make a keyframe where you want the audio effect to change
- Or, you cut the clip into two pieces and apply the effect to one of them.
- Audio effects are additive --
- the one on top is applied first
- the second on the list second, etc.
- Changing the order of the audio effects will change the cumulative effect of the audio effects
- You can drag audio effects up and down the list to see what happens
- Adjust the volume of the audio clip at keyframes, using the Effects Control panel -- the volume effect is automatically available there.
- Adjust the volume of individual tracks or the entire mix of audio tracks in the audio mixer, which is available on a tab behind the source window.
types of Audio Effects in Premiere
Bandpass
- High Pass effect removes low frequencies from an audio clip
- Low Pass effect removes high frequencies
- Notch/Hum Filter - remove hum from an audio clip
Channel
- Auto Pan - pans an audio track cyclically between the left and right audio channels.
- Fill Left and Fill Right - plays the entire audio clip in the left or right stereo channel, respectively
- Pan - positions the playback of an audio track at any point between the left and right stereo channels
- Swap Left & Right - moves the left channel of a stereo audio clip into the right channel and vice versa
Direct-X
- Direct-X Audio Filter provides filters from outside Premiere
Dynamics
- Boost - amplifies weak sounds and leaves loud sounds intact
- Compressor/Expander - controls dynamic range, the difference between the loudest and softest sounds by decreasing or expanding them
- Noise Gate - removes background noise during quiet passages of an audio clip
EQ
- Bass & Treble - adjust audio tone by boosting or cutting bass and treble
- Equalize - refines the tonal quality of an audio clip
- Parametric Equalization - allows fine tuning of tone for an audio clip
Effect
- Chorus - applies a copy of the sound that is detuned, or played at a frequency slightly offset from the original
- Flanger - inverts the phase of the audio signal at its center frequency -- adds a wavy rushing sound to the audio
- Multi-Effect - creates a variety of echo and chorus effects by providing precise control over audio delay and modulation
Reverb and Delay
- Echo - repeats the sounds in the audio clip after a specified amount of time
- Multitap Delay - controls delay effects more precisely
- Reverb - simulates the effect of a spacious or acoustically live interior
TC Works includes Direct-X plugins from TC Works
To add audio effects to an entire audio clip
- Select the clip in the timeline
- Click the twistie on the left of the audio track in the timeline to open the track
- Click the keyframes icon to choose to see the volume level or the keyframes displayed on the audio clip in that track.
Select an audio effect and drag it onto a clip
- Open Audio Effects and Effect Controls palettes from Window dropdown menu
- Drag the Edit line (the vertical line extending from a downward tab at the top of the Timeline) to the beginning of the clip
- Select the effect and drag it onto the clip in the Timeline
- To set up the starting keyframe and ending keyframe (and any intermediate keyframes) of the effect you need to show the Keyframes
- The Effect name should appear in the Effects Control palette.
- Click the little box to the left of the Effect name in the Effects Control palette to show the keyframes
- A little checkbox should appear in the audio 1A track just to the left of the track.
- Checking this checkbox will set up a keyframe in the audio clip at the Edit line point.
- Keyframes show as little white diamond shapes.
- Click Setup to configure the audio effect as it will appear in the Keyframe
- Different audio Effects have different configuration possibilities
- Some will show you a preview of the audio Effect
- Click OK to save the audio Effect configuration for the Keyframe
- You can move the Edit Line over a frame in the middle of the clip, click Setup in the Effects Control palette and add an intermediate keyframe.
- Save the Project and hit the Enter key to see a preview of the panning effect.
Preview the audio Effects
- If your movie is long, you can adjust the timeline to shorten it to create a preview to view the audio effect effects. Try these audio effects.
- Try multiple audio effects in a different order.
Be sure to take notes about what you do, and save different versions of your files!
Go for it!