test.rb

#!/usr/bin/env ruby
require 'pocketsphinx-ruby'
require "espeak"
include ESpeak

require "require_all"

def run_listen
        configuration = Pocketsphinx::Configuration::Grammar.new('grammars/activate.gram')
        Speech.new("Loaded grammer/activate.gram").speak
        recognizer = Pocketsphinx::LiveSpeechRecognizer.new(configuration)
        Speech.new("Recognizer created")
        recognizer.recognize do |speech|
                case speech
                when "activate"
                        Speech.new("Activated").speak
                        return run_listen
                when "deactivate"
                        Speech.new("Deactivated").speak
                        return run_listen
                end
        end
end

Speech.new("Voice Control started.").speak
run_listen

# activate.gram
#JSGF V1.0;
#grammar module;
#public <command> = ( activate | deactivate );