This document provides an introduction to phonetics for students studying English, French, German, and Spanish. It summarizes the key parts of the vocal tract involved in speech production, including the lungs, larynx, vocal folds, and oral cavity. The larynx and vocal folds are described as the primary location where speech sounds are produced through modifications of the airstream from the lungs. Voicing is introduced as a key distinction between many consonant sounds, where voiced sounds involve vibration of the vocal folds and voiceless sounds do not. The document aims to improve pronunciation and provide background for linguistic study by explaining the articulatory processes underlying speech sounds.