audacity.org

Trim Clip

Select with mouse. Edit > Remove Special > Trim Audio

Then there is an audio slider tool and you have to move the clip to the beginning. Its a double left/right arrow.

Augment Volume

Select region, Effects > Amplify

Remove noise from a recording.

When recording you should allow some silence before and after the recording.

• Select a portion of the recording before or after that contains just

the background noise.

• Effects > Noise Removal
• Get Profile
• Now select the part of the recording you want to keep (and apply noise removal to)
• Effects > Noise Removal
• Preview > OK

Then I like to cut and paste this out by:

• C-x
• Delete the existing recording (x in top left)
• C-v

Playback

Using the `sox` package.

% play test-sound.ogg

Trim silence from beginning and endpoint

Select where there is a leading silence, Effects > Truncate Silence