A vacuum cleaner rated at 70 dB (8 Sones) is not just a little louder than a conversation at 60 dB (4 Sones)—it is twice as loud .
Understanding loudness in sones provides a more human-centric approach to evaluating sound levels. While decibels give us a physical measure of sound pressure, sones offer insights into how we perceive loudness, which is essential for a wide range of applications from consumer electronics to environmental noise assessment. This guide serves as a starting point for delving deeper into the concept of sones and their applications. loudness sones
The term "sone" was coined by Stanley Smith Stevens, an American psychologist, in 1937. Stevens was studying the perception of sound and wanted to create a unit that would quantify loudness in a way that was more relatable to human perception. A vacuum cleaner rated at 70 dB (8