Phonetics is the study of the sounds of human speech, including their production, transmission, and perception. It examines the physical properties of speech sounds, such as articulation, frequency, and duration. In language teaching, phonetics helps students improve their pronunciation and listening skills by providing a scientific understanding of how sounds are produced and perceived. Phonetic training often includes practicing the International Phonetic Alphabet (IPA), learning about articulatory features, and engaging in pronunciation drills.