Guide To Use Audacity: Envelope Tool

Envelope Tool

Envelope Tool: For music lovers and creators, it is very important that they “play” with their music. Here, “playing” with the music simply means editing the music. Editing the music could be:

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  • Cropping the song
  • Mixing different songs
  • Editing the pitch of the song
  • Recording the song with different tunes

By creating fades with the help of an envelope tool, you can alter your music in different ways and forms. It allows you to alter the volume of tracks in audacity. Fade in/fade out is an easy example of envelopes that help the users control the track.

How To Use Envelope Tool?

  • Open Audacity

You will first have to open audacity with more than one track. You will see buttons like pause, play, stop, forward, and backward.

  • Activate Envelope Tool

There will be an icon of the Envelope tool, in the Audacity toolbar. You have to click that button and the track will be surrounded by a blue line.

  • Do The Editing

You can then lower the volume on chosen sections of the track by changing the shape of the blue line. Fade-in and fade-out effects can be used by pan and gain. Gain helps you fix the threshold of loudness. And, pan helps to set loudness.


Fade In-Fade Out

In very generic terms, fade is a decrease or increase in the audio. A song can be gradually decreased to silence which is fading out or can be gradually increased from silence which is fading in. Through the envelope tool, you can easily fade-in or fade-out to add great effects on different parts of your song. DJ’s often use this technique while matching the beats of two songs.

How To Fade-In And Fade-Out?

  • First, set a point of control by clicking on the waveform, with the help of an envelope tool at the starting position.
  • Take the point of control vertically by moving it to the adjoining edge of the track to obtain full volume.

For fading out –

  • You have to click the waveform, including the envelope tool at the ending position.
  • Drag the point of control up or down, towards the middle of the track vertically.

You can also mix two tracks together by fading one track in while fading the other track out often referred to as crossfade. This is one of the main components of audacity. And, is used all around the world.


Auto ducking is another feature of audacity, which allows you to change the volume of one track based on the volume of the other track. Sounds interesting right? Well, there are a lot more interesting features in audacity. Let’s talk about auto-ducking for now:

There are two ways you can use this feature.

  1. One can lower a track’s volume, while continuing with the other track.
  2. You can increase the volume, while keeping the other track on silent.

The Envelope tool is one of the most prominent features of audacity. And, it not only helps you with volume changes, but also helps you alter your music in your own way. Click here to learn more.


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