Ernst Heinrich Weber

Ernst Heinrich Weber was a 19th-century German physician whose work laid the foundation for psychophysics, the study of the relationship between physical stimuli and the sensations they produce. In psychoacoustics, he is known for Weber's Law, which states that the smallest detectable difference in stimulus intensity varies based on the original intensity. For example, if you have a loud sound, you need a larger change to notice it compared to a quiet sound. This principle helps explain how we perceive changes in sound intensity and other sensory experiences, highlighting the relationship between physical changes and our perception of them.