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Developer's Description

Simple, easy to use audio tool to calculate a loudspeaker's sound pressure level (SPL) based on the Inverse Square Law. Two conditions are required or assumed: 1. Free Field Conditions (No Walls or Reflective Surfaces) and 2. Single Point Source. The variables include the distance between the loudspeaker and listener, the desired amplifier power, and the loudspeaker's sensitivity rating (usually between 88 to 102 dB defined as 1Watt at 1 Meter). Use the sliders to adjust variable settings on the fly to get quick estimations.

Full Specifications

What's new in version 1.0.2

*Updated graphics and icon.*Various usability fixes/enhancements.*Text box sets scale of sliders.


Release March 5, 2011
Date Added March 5, 2011
Version 1.0.2

Operating Systems

Operating Systems iOS
Additional Requirements Compatible with iPhone, iPod Touch, and iPad. Requires iOS 3.1 or later. iTunes account required


Total Downloads 19
Downloads Last Week 0
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