Neper (Np) to Decibel (dB) Conversion
Convert neper (np) to decibel (db) with precision. Enter values and get instant conversions.
Sound Converter
1 Neper (Np) = 0 Decibel (dB)
Common Conversions
About Neper (Np) to Decibel (dB) Conversion
Converting from Neper (Np) to Decibel (dB) is a common sound conversion.
This online converter allows you to easily convert between neper (np) and decibel (db), providing instant results with high precision.
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.
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.
Details
- From: Neper (Np)
- To: Decibel (dB)
- Formula: 1 Np = 8.6858896380 dB
- Example: 25 Np = 217.1472409500 dB
Neper (Np) to Decibel (dB) Conversion Table
| Neper (Np) | Decibel (dB) |
|---|---|
| 0.01 | 0.0868588964 |
| 0.1 | 0.8685889638 |
| 1 | 8.685889638 |
| 2 | 17.371779276 |
| 3 | 26.057668914 |
| 5 | 43.42944819 |
| 10 | 86.85889638 |
| 20 | 173.71779276 |
| 50 | 434.2944819 |
| 100 | 868.5889638 |
| 1000 | 8685.889638 |