Praat

Praat is a comprehensive software tool for doing phonetics by computer. It provides a wide range of speech analysis functions, including spectrograms, pitch and formant analysis, and intensity measurements. Designed by scientists for rigorous academic research, it maintains an intuitive interface that makes advanced speech analysis accessible to students, linguists, and speech therapists alike. You can record sounds, manipulate them, and create publication-ready visualizations, all within a single, powerful application.