Use of Uspeech library

Hello Everyone i need your help in my project. Our project is based on simple signal processing we have connected a microphone with our arduino uno and have three leds connected on pin 8 9 and 10. The green led should turn on when we say "green" same for red and white. We have downloaded uspeech library and have done everything as mentioned in this site http://tiriboy.blogspot.com/2014/08/voice-recognition-with-arduino.html But our leds are showing random pattern. Please help