decay

In delays and reverbs, it describes how repeats or ambience fade, as in the Ibanez AD9's notes decaying into one another¹, the Dispatch Master's exceptionally natural decay², and the Keeley Loomer's Hall mode, where decay sets the reverb time³. Some pedals offer decay controls, such as the Boss NS-2, whose threshold and decay controls shape suppression⁴, and the Pigtronix Gloamer, which alters attack and decay time of any sound source⁵. Sources also use decay to describe how fuzz and overdrive notes fall apart or change character as they fade, such as "splatty" behavior in the Colorsound Overdriver⁶ and the gritty, fuzzy note decay of the Lemon Drop⁷.