Fletcher Harvey

Fletcher Harvey refers to a key concept in psychoacoustics that describes the relationship between frequency and sound intensity in human hearing. It illustrates how our perception of sound changes based on both the pitch (frequency) and loudness (intensity) of sounds. The Fletcher-Harvey curves demonstrate that our sensitivity to different frequencies varies, meaning we hear some pitches better than others at certain loudness levels. This understanding is crucial for audio engineering and designing hearing aids, as it helps create sound experiences that align with human auditory perception.