Sound Forge processes

The remainder of this chapter describes the functions located in the Process menu.

Auto Trim/Crop

Auto Trim/Crop removes silence from an audio file. In addition, this function automatically fades the endpoints of a phrase.

Using Auto Trim/Crop

1.Open the Voiceover.pca file.

2.From the Process menu, choose Auto Trim/Crop. The Auto Trim/Crop dialog is displayed.

3.From the Preset drop-down list, choose Phrase Concatenator 1 and click OK. The Auto Trim/Crop function deletes silence in the file and creates new regions based on the preset’s parameters. For more information, see Auto Trim/Crop controls on page 175.

Auto Trim/Crop controls

The following controls are located in the Auto Trim/Crop dialog.

Control

Description

Function

This drop-down list contains five modes:

 

• Keep edges outside of the selection Removes silence within the selection, but retains all data outside of

 

the selection.

 

• Remove edges outside of the selection Removes silence within the selection and deletes all data beyond

 

the selection.

 

• Remove silence between phrases (creates regions) Removes silence within the selection and creates

 

regions from individual phrases. For more information, see Minimum inter-phrase silence on page 176.

 

• Remove data beyond loop points Removes all data beyond the selected loop. For more information, see

 

Minimum length following loop end on page 176.

 

• Remove data from start and limit file length Allows you to specify an amount of sound to be deleted from

 

the beginning of each file and specify a maximum length for converted files. If a file is longer than this

 

length, it is trimmed. This preset is useful for creating sample clips.

 

 

Attack threshold

Determines the threshold level for detection of the trim/crop start point: -Inf. indicates complete silence, and

 

0 dB indicates maximum amplitude level.

 

 

Release threshold

Determines the threshold level for detection of the trim/crop end point: -Inf. indicates complete silence, and

 

0 dB indicates maximum amplitude level.

 

 

Fade in

Determines the length (in milliseconds) of the fade applied to a section of audio prior to the detected trim/

 

crop start point.

 

 

Fade out

Determines the length (in milliseconds) of the fade applied to a section of audio following the detected trim/

 

crop end point.

 

 

PROCESSING AUDIO 175