Decibel IL (re 1 pW/m²) (dB IL)
Sound intensity level: 10 times the base-10 logarithm of the sound intensity divided by the reference intensity of 1 pW/m² (10⁻¹² W/m²).
What is a decibel IL?
- Symbol
- dB IL
- Quantity
- Sound Intensity Level (dB IL)
- Unit system
- other
- Definition
- Sound intensity level: 10 times the base-10 logarithm of the sound intensity divided by the reference intensity of 1 pW/m² (10⁻¹² W/m²).
- Exact
- Yes, the value is exact by definition
- Source
- ISO 1683:2015, Acoustics: Preferred reference values for acoustical and vibratory levels
Common applications
Used in acoustics textbooks and for sound power calculations. In air it is numerically close to the sound pressure level in dB SPL.
Decibel IL (re 1 pW/m²) in other sound intensity level (db il) units
- W/m² = 1e-12 × 10^(dB IL ÷ 10)Decibel IL (re 1 pW/m²) to Watt per square meter converter
- µW/m² = 0.000001 × 10^(dB IL ÷ 10)Microwatt per square meter
- pW/m² = 10^(dB IL ÷ 10)Decibel IL (re 1 pW/m²) to Picowatt per square meter converter
Decibel IL (re 1 pW/m²) quick reference
| Decibel IL (re 1 pW/m²) | Watt per square meter | Picowatt per square meter | Microwatt per square meter |
|---|---|---|---|
| 0 dB IL | = 1e-12 W/m² | = 1 pW/m² | = 0.000001 µW/m² |
| 10 dB IL | = 1e-11 W/m² | = 10 pW/m² | = 0.00001 µW/m² |
| 20 dB IL | = 1e-10 W/m² | = 100 pW/m² | = 0.0001 µW/m² |
| 30 dB IL | = 1e-9 W/m² | = 1000 pW/m² | = 0.001 µW/m² |
| 40 dB IL | = 1e-8 W/m² | = 10000 pW/m² | = 0.01 µW/m² |
| 50 dB IL | = 1e-7 W/m² | = 100000 pW/m² | = 0.1 µW/m² |