tags: mus-407 sound sound-perception loudness
Loudness
Loudness is a subjective perception of [sound] based primarily on [amplitude]/power/intensity, but also [frequency]
- closely related to amplitude
- a perceived doubling of loudness → depends on the person
- approximately 9-10 [dB]
Loudness is measured in units of phons (perceived loudness)
As humans, our perception is subject to certain [psychoacoustic] phenomena.
- we have less sensitivity to low and high frequencies.
- we have greater sensitivity between 2kHz and 5kHz (human talking range) due to the structure/length of our ear canal
The wavelengths of these frequencies aligns with most people's ear canals, so our ear canals go into [resonance] when these frequencies are present in sound we listen to