Generate tones of specific frequency on mac command line

Question

I need to generate musical notes of a given frequency on the command line

Here is a list of the frequencies of notes http://www.phy.mtu.edu/~suits/notefreqs.html

Answer 1

SoX works really good for this purpose and it's available in brew:

$ brew install sox
$ play -n synth 3 sin 523.25

You can also save the sound to a file:

$ play -n out.wav synth 3 sin 523.25