Decibel (dB) to Neper (Np) Conversion
Convert decibel (db) to neper (np) with precision. Enter values and get instant conversions.
Sound Converter
1 Decibel (dB) = 0 Neper (Np)
Common Conversions
About Decibel (dB) to Neper (Np) Conversion
Converting from Decibel (dB) to Neper (Np) is a common sound conversion.
This online converter allows you to easily convert between decibel (db) and neper (np), providing instant results with high precision.
Decibel (dB)
Definition: The decibel (symbol: dB) is a logarithmic unit used to measure sound intensity level relative to a reference value. It expresses the ratio between two sound pressures as ten times the base-10 logarithm of the ratio.
History: Developed in the 1920s by Bell Labs to measure signal loss in telephone circuits. Named after Alexander Graham Bell. Originally based on the bel (1 dB = 0.1 B), but decibels became more practical for most audio measurements.
Current use: Standard unit for sound pressure levels (SPL), audio equipment specs, and noise measurements. Used from quiet libraries (30 dB) to rock concerts (110+ dB) and hearing safety regulations.
Neper (Np)
Definition: The neper (symbol: Np) is a logarithmic ratio unit based on natural logarithms (1 Np = ln(e) ≈ 8.686 dB). It measures field quantities like voltage or current amplitude ratios.
History: Named after John Napier, inventor of logarithms. Used primarily in Europe, especially in fields dealing with wave propagation and transmission lines.
Current use: Mainly in theoretical physics, telecommunications (fiber optics), and electrical engineering where natural logarithms simplify exponential calculations.
Details
- From: Decibel (dB)
- To: Neper (Np)
- Formula: 1 dB = 0.1151292547 Np
- Example: 25 dB = 2.8782313663 Np
Decibel (dB) to Neper (Np) Conversion Table
| Decibel (dB) | Neper (Np) |
|---|---|
| 0.01 | 0.0011512925 |
| 0.1 | 0.0115129255 |
| 1 | 0.1151292547 |
| 2 | 0.2302585093 |
| 3 | 0.345387764 |
| 5 | 0.5756462733 |
| 10 | 1.1512925465 |
| 20 | 2.302585093 |
| 50 | 5.7564627325 |
| 100 | 11.5129254651 |
| 1000 | 115.1292546506 |