18.4 Available Track and Send Envelopes
The following are the automation envelopes that by default are available for all tracks and sends.
Kind: concept (user-guide-section) Chapter: 18 Automation – Envelopes and More Source: REAPER User Guide v7.70
The following are the automation envelopes that by default are available for all tracks and sends. Envelopes for plug-ins and FX will be discussed later in this chapter.
Envelope Description
Volume
Adjusts the volume of the Track’s Output, after, for example, any item or track FX have been applied. This sets the level of the signal that is sent to the Master Track.
Pan
Moves the balance pan control more towards the left, right, or dead center: the signal that is sent post FX from the track to the Master Track.
Width
Moves the width control more towards the left, right, or dead center: the signal that is sent post FX from the track to the Master Track.
Volume (Pre FX)
Adjusts the volume of the track signal that is fed to the track’s FX chain. This is generally equivalent to the gain control that you can find on some desks and mixers. This works directly on the media itself: media item peak display will automatically be adjusted to match the envelope, as shown here.

Pan (Pre FX)
Similar to Pan control but before track FX or track faders are applied.
Width (Pre FX)
Similar to Width control but before track FX or track faders are applied.
Trim Volume
A rather different type of envelope that can be used to modify the track volume envelope. This will be considered later in this chapter.
Mute
This envelope has effectively only two states – On and Off. It is used to mute passages of a track.
Send Volume
Adjusts the volume of the track signal sent to the destination track. Can be used for Post fader (Post Pan), Pre fader (Post FX) and Pre fader (Pre FX) sends.
Send Pan
Adjusts the panning of the track signal sent to the destination track. Post fader (Post Pan), Pre fader (Post FX) and Pre fader (Pre FX) sends.
Send Mute
This has only two states – On and Off. It is used to mute passages on a send.