Use the Gain patch to adjust the volume of an audio signal.
For example, it's a good idea to use a Gain patch to lower the gain of a loud audio signal before passing it through additional audio patches, to avoid pushing those patches beyond their limits and distorting the sound.
The audio source that you want to alter. Attach audio clip playback, microphone or other audio source.
Amount of gain to apply between 0.0 and 1.
Connect to a speaker, an audio effect or another patch that has an audio input.
See the harmonizer effect in this article for a simple example of using Gain patches to adjust the sound level in an effect. We also use Gain patches in the robotic voice effect described here.