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Applying audio effects

Audio effects and video effects are applied in about the same way. Here, you'll first remove noise from an audio clip, and then add some reverberation to the same clip.

1.
Make Bookstore the active sequence on the Timeline.

2.
Press Page Up or Page Down on the keyboard to set the edit line at the In point of Bookstore.avi (00;00;08;00).

3.
Drag Audioeffect.wav from the Project window into the Audio 2 track so that its In point snaps to the edit line.

Note

You muted the Audio 1 track earlier in this lesson. It is best to leave it muted until the last effect is completed in the Audio 2 track.

4.
Check that the box on the far left of the Audio 2 track is selected so that the speaker icon () appears.

5.
Preview Audioeffect.wav by moving the edit line to the beginning of the clip and pressing the Play button under the Program view. Notice the constant noise in the clip.

The Notch effect in Premiere can be used to remove or reduce hum (low-frequency noise) or another single-frequency noise in an audio clip. You'll use the Notch effect to remove noise from the Audioeffect.wav clip.

6.
In the Contains field of the Effects palette, type Notch.

7.
The Notch effect is displayed in three directories.

8.
Select the Notch effect for Stereo tracks, and drag it to the Audioeffect.wav clip in the Timeline window. Or, if the Audioeffect.wav is selected in the Timeline window, drag the Notch effect to the Effect Controls window.

9.
Open the triangle next to the name Notch, and then the Notch > Center controls after that.

10.
Click the Preview sound box (). Premiere plays a short loop of audio from the audio track.

The frequency of the noise in Audioeffect.wav is 800 Hz.

11.
Drag the Center slider in the Notch to 9.99, then try random settings less than 800 Hz in the effect and listen to the audio preview.

Notice that at the effect setting of 800 Hz, the noise is reduced. Set the effect just below 800 Hz.

12.
Using the Center slider, set it to 770.43 Hz in the Hz field.

“Q” Specifies the range of frequencies to be affected. A low setting creates a narrow band; a high setting creates a wide band.

13.
Set the Q slider to 0.12.

14.
Preview Audioeffect.wav again. The noise is now nearly inaudible. Also notice that the audio sounds flat.

Add some life to it by adding reverberation to the same audio clip. The Reverb effect simulates sound bouncing off hard surfaces in either a medium-size room or a large room.

15.
In the Timeline window, select Audioeffect.wav.

16.
In the Contains field of the Video Effects palette, type in Reverb. The Reverb effect is located and displayed.

17.
Drag the Stereo Reverb effect to the Audioeffect.wav clip in the Timeline window. Or, if the Audioeffect.wav is selected in the Timeline window, drag the Reverb effect to the Effect Controls palette.

18.
Click the triangle next to the name Reverb to open it, then the Custom Setup triangle as well. Graphical effect controls are displayed in the Custom Setup controls area.

19.
On the far right of the Reverb name bar is a menu for selecting the size of the room being emulated in the effect. Select Medium room.

20.
Set the other pods as follows, and then adjust according to taste and wow factors you want to achieve:

  • Set Absorption to 10.00%.

  • Set Size to 80.00%.

  • Set Density to 100.00%.

  • Set Lo Damp to -6.00 dB.

  • Set Hi Damp to -6.00 dB.

  • Set Mix to 50.00%.

21.
Preview Audioeffect.wav, which the video portion covers.

22.
Turn on the audio on the Audio 1 track, and preview the entire Bookstore sequence.

You have just improved the quality of the sound in your project significantly! You have also completed the first lesson in effects. In the next lesson, you'll work with effects imported from other Adobe products.

23.
Save the project.


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