Easy Cow and Chicken Whistle в Android Market

Easy Cow and Chicken Whistle (v. 1) Разработано Hunter Davis

Easy Cow and Chicken Whistle is a fast and free app to generate sounds your cows and chickens can hear.  Use this to train your farm animals.... maybe. You can also use it as a frequency generator.(FYI: Cows can hear ultrasonic sounds up to 30,000 hertz, however chickens can only hear in an auditory range up to 2000 hertz).