Sound Power Level

Sound power W (watts) measures total acoustic energy per second radiated by a source. Like sound pressure level, it is expressed on a logarithmic scale:

ight)$$ - **W** — sound power (W) - $W_0 = 10^{-12}$ W — reference sound power - $L_W$ — sound power level (dB re 1 pW) ### Power Level vs Pressure Level Sound power level is a **source property** — it doesn't depend on distance or room acoustics. Sound pressure level (SPL) depends on where you stand. A louder room or closer listener gives higher SPL from the same source. | W (watts) | $L_W$ (dB) | Example | |-----------|---------|---------| | $10^{-12}$ | **0** | threshold of hearing | | $10^{-6}$ | **60** | whisper | | 1 | **120** | rock singer | | 100 | **140** | jet engine | ### Your Task Implement `soundPowerLevel(W)` returning $L_W$ in dB.

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