Hi all, One part of the DSP library that I am working on is a module for generating sequences of Gaussian random variables. Since this may be of use to people outside the DSP community, I wanted to get some suggestions on the interface. Right now, I have a few different methods for generating white gaussian noise. They all behave the same, but have different ranges and efficiencies. 1. Should the functions generate the necessary uniforms, or accept a list of uniforms? In other words, shuld the signature be wgn :: Int -- ^ seed to generate the uniforms -> [Double] -- ^ list of Gaussian random variables or wgn :: [Double] -- ^ list of uniform random variables -> [Double] -- ^ list of Gaussian random variables The first is what I currently have implemented, but the second is more flexible. 2. Should the functions accept mean and/or variance parameters, or should they generate unit normals? For those who forget X' = mean + sqrt var * X or X' = mean + stddev * X For a point of reference, the GNU scientific library function for WGN has a stddev parameter. I will probably be sending out a bunch of other emails in the next week or two. Thanks. -- Matthew Donadio (m.p.donadio@ieee.org)