CW (Morse code) Trainer. Koch method

Read this in other languages: English, Русский.

This program is designed to help in learning Morse code by use the Koch method.

I'll write description maybe later, but if someone is interested, just run it and try it.

Requirements

This is console program and must be run from terminal:

$ racket ./cwtrainer.rkt

If you want just listen a random set os letters or a text then run:

$ racket ./cwtrainer.rkt listen

$ racket ./cwtrainer.rkt listen "Privet ot staryh stiblet"

The configuration settings are stored in the cwtrainer.conf.