| Feature | Loudness | Intensity |
|---|---|---|
| Definition | The perception of how strong or weak a sound appears to the human ear. | The actual amount of sound energy (power) transmitted per unit area. |
| Nature | Subjective – depends on human perception. | Objective – measured scientifically. |
| Measurement Unit | Measured in decibels (dB). | Measured in watts per square meter (W/m²). |
| Depends On | – Sound intensity (but also influenced by the ear’s sensitivity). – Distance from the source. | – Amplitude of the sound wave. – Energy transmitted per unit area. |
