Here’s the free version of Smile! Noisebud, 2022, February 172025, May 27 Become a patron to download everything we have done and are going to do, including alpha and beta versions of ongoing experiments. Smile is a Fletcher-Munson-based de-harsher. Smile uses the phenomena discovered by Fletcher and Munson to de-harsh audio and adapts the frequency response to human hearing. With the help of a transient recovery engine, you can push it pretty hard before it starts to sound dull and we included a filter to handle the extremes in the low and hi-end from the Fletcher-Munson curve. Blog