Sound Level Coverage Calculator

Map garden sound reach with distance and foliage effects. Set comfort goals, estimate speaker count, and plan placement. Keep sound even across pathways and seating zones.

Calculator inputs

Large screens show three columns, then two, then one.
All fields are optional.
Garden size
Height affects 3D distance to listeners.
Speaker performance
Lower values mean you prefer more uniform sound.
Environment and goals
Required minimum becomes max(target, ambient + margin).
Helps avoid overly loud garden zones.
Notes are included in the PDF export for reference.

Example data table

Scenario Garden (m) Speaker SPL @1m Placement Ambient Goal Typical recommendation
Patio seating 10 × 6 88 dB Center 45 dB 65 dB 2–3 speakers, 4–5 m spacing
Pathway route 18 × 8 92 dB Two sides 50 dB 70 dB 4–6 speakers, 4 m spacing
Dense shrubs zone 12 × 10 95 dB Corners 55 dB 72 dB 6–8 speakers, higher overlap

Formula used

  • Distance loss: Loss(dB) = 20 · log10(d / 1m)
  • Foliage and air loss: Extra(dB) = (FoliageLoss · HumidityFactor) · (d − 1)
  • Estimated level at distance: SPL(d) = SPL@1m − Loss − Extra + 10 · log10(N)
  • Target minimum: Min = max(DesiredLevel, Ambient + ClarityMargin)
  • Coverage estimate: AreaPerSpeaker ≈ π · r² · OverlapFactor
The radius r is solved numerically so the single-speaker level meets the minimum target, including foliage and humidity adjustments.

How to use this calculator

  1. Enter your garden length, width, and mounting height.
  2. Use the speaker’s SPL rating at one meter.
  3. Set a listening level and ambient noise estimate.
  4. Adjust foliage loss for shrubs and trees.
  5. Pick a placement style matching your layout.
  6. Press calculate to view results above the form.
  7. Download CSV or PDF for sharing.

Related Calculators

WiFi coverage radius calculatorWiFi router placement calculatorInternet speed needs calculatorBandwidth per device calculatorStreaming bitrate calculatorLatency impact estimatorSmart hub compatibility checkerZ-Wave range calculatorThread network planning calculatorBluetooth range estimator

Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.