Sound Power Emitted Calculator

I want to calculate
Sound Wave Intensity(I) = W/m2
Radius or Distance from Point Source(r) = m
Power Emitted(PAV) = W
 

What is a Sound Power Emitted Calculator?

A Sound Power Emitted Calculator is a tool used to determine the total acoustic power output of a sound source, measured in watts (W). Unlike Sound Pressure Level (SPL), which depends on the distance from the source, Sound Power represents the total energy a source emits as sound, regardless of location.

It is calculated using the formula:

Where:

  • LW​ = Sound Power Level (dB)
  • P = Sound power emitted (W)
  • P0​ = Reference sound power (10−12 W)

Alternatively, if Sound Pressure Level (SPL) and distance are known:

Where A is the sound radiation area in square meters.

Why Use a Sound Power Emitted Calculator?

This calculator is useful for:

  1. Acoustic Engineering – Measuring the power output of speakers, engines, or industrial machines.
  2. Noise Regulation & Compliance – Ensuring machines meet noise emission standards.
  3. Product Development – Designing quieter appliances, vehicles, and industrial equipment.
  4. Environmental Noise Assessment – Evaluating the impact of noise pollution in urban or industrial areas.

How Does a Sound Power Emitted Calculator Work?

  1. Measure Sound Pressure Level (SPL) – Use a sound level meter at a known distance.
  2. Determine the Measurement Area – Identify the surface over which sound spreads.
  3. Apply the Formula – Use logarithmic calculations to find the total sound power.
  4. Interpret the Results – Compare the calculated sound power with regulatory limits or industry benchmarks.

When to Use a Sound Power Emitted Calculator?

  • For industrial noise assessments of machines and engines.
  • In speaker and audio system design to measure total output.
  • To comply with workplace noise regulations in factories.
  • In environmental studies to evaluate noise pollution sources.