Watch the Slap Hi Hat Technique online guitar lesson by Dmitry Lisenko from Percussive Acoustic Bass (Foundry)
Slap hi hats is one of the variations on how to imitate a hi hat sound. It's a standard slapping technique. All we have to do is mute all strings with our left hand, and start slapping the G string. This way we're getting a more narrow sound, like the drummer who would play on a fully closed Hi hat.