JuliaDSP/DSP.jl — pull request #76 by gummif (2014-10-17 03:13:23+00:00)
Title: Common DSP tools

* dB conversions, e.g. `x = -3dBa*x` for decreasing the power of `x` by 2.
* rms
* snr

There are some common functions in https://github.com/JuliaStats/StatsBase.jl/blob/master/src/deviation.jl for DSP, so maybe the `snr` function fits better there?