Envelope tab controls

The following sections describe all controls located on the Envelope tab.

Control

Description

Impulse

This control is identical to the Impulse drop-down list on the General tab. This allows you to

 

view the envelope graphs for the specified impulse file. For more information, see Impulse on

 

page 216.

 

 

Dry Out

This control is identical to the Dry Out fader on the General tab. For more information, see Dry

 

Out on page 216.

 

 

Wet Out

This control is identical to the Wet Out fader on the General tab. For more information, see Wet

 

Out on page 216.

 

 

Apply envelope and limit decay

This control is identical to the Apply envelope and limit decay check box on the General tab.

 

For more information, see Apply envelope and limit decay to (seconds) on page 216.

 

 

Envelope Graph

Selecting the Apply envelope and limit decay check box turns on the Envelope Graph. You

 

can use the envelope graph to decrease the length of the specified impulse file, which

 

consequently decreases the reverberation decay time and processing time. You can also use

 

the envelope graph to apply fades to the specified impulse file.

 

The horizontal axis of the graph represents the time of the impulse file and the vertical axis

 

represents peak amplitude in dB. Specifying an impulse file from the Impulse drop-down list

 

automatically displays its envelope in the graph.

 

Note: If the impulse file is greater than 6 seconds in length, it does not display in the

 

envelope graph.

 

 

Envelope points

Envelope points are used in the envelope graph to specify a fade curve. The fade amount can

 

vary from 0% to 100%. You can create, delete, and arrange envelope points just as you can in all

 

of the Sound Forge envelope graphs. For more information, see Envelope graphs on page 49.

 

Note: The fade value at any point in a curve does not use the same vertical logarithmic (dB)

 

scale used for displaying the impulse file.

 

 

Reset

Clicking this button resets the envelope points to 100%, indicating no fade.

 

 

Package Impulse into Preset

Clicking this button creates a link between the current preset and the selected impulse file,

 

along with encoding the impulse information. You can use the Preset Manager to share presets

 

and the accompanying impulse files between computers without losing information. For more

 

information, see Using the Preset Manager on page 204.

 

 

Adjusting the impulse length

Drag the vertical Envelope Endpoint line to the desired location. The Envelope Endpoint is repositioned and the length of the impulse is adjusted.

Repositioning the envelope endpoint line

USING ACOUSTIC MIRROR AND WAVE HAMMER 217