Experimental phonetics is a research approach that studies speech sounds using instruments and computer software rather than relying only on listening. The process typically begins with designing spoken materials, such as word lists or sentences, that contain the sounds of interest. Researchers then record speakers in a quiet environment, including native speakers as a reference group and second language learners as the experimental group. After recording, they use software like Praat to annotate the speech files and extract acoustic parameters, such as duration, fundamental frequency, spectral center of gravity, and energy dispersion. Finally, statistical methods are applied to compare different groups and identify patterns or differences in pronunciation. This approach provides objective, quantifiable, and visual results, making it especially useful for studying second language phonetic acquisition and for developing evidence-based teaching strategies.