Sinusoidal wave starting at 20 Hz frequency and going up to 20 kHz frequency. I recommend that you listen to this using headphones. Try watching in HD to get better audio quality. I was able to hear before I reached 15200 Hz.
Dogs hear high tones in particular much better than humans do. Humans can pick up an average of 20,000 acoustic vibrations per second (Hz), whereas a dog can perceive between 40,000 and 100,000 vibrations.
What about you, guys?