Teach the S Sound HomeSpeechHome Uvula's role in sleep apnea and snoring Tongue posture and articulation Pure Ocarinas How do you get a perfect whistling sound for the letter Seen ()? It's all about where you rest the tip of your tongue! Check out the diagram to see the How do humans speak? How It Works Let's Talk About the d Sound! The d sound is a voiced postalveolar affricatethat simply means it starts like a stop sound d and releases into a fricative . You feel your