Nepenthe

Nepenthe is a reverb designed to be smooth, transparent, and easy to use.

Nepenthe's algorithm is based on the concept of velvet noise. Rather than building echoes with a network of delay lines, it uses a predetermined set of randomly-generated echoes. This is a very simple design, which works well with modern CPU optimizations, so Nepenthe runs efficiently.

Nepenthe is open source, and its code is annotated with detailed explanations of the design.

Controls:

• Time is how long it takes, in seconds, for the reverb to decay by 60dB.
• Delay specifies the pre-delay time, in milliseconds.
• Bass controls the low-frequency content of the reverb.
• Treble controls the high-frequency content of the reverb.
• Width controls the stereo width of the reverb.
• Mix controls how much reverb is mixed with the dry signal.