A mobile application for Apple’s operating system, designed to measure sound pressure levels (SPL) in decibels (dB). These applications leverage the built-in microphone of an iPhone or iPad to provide a real-time indication of ambient noise levels. For example, an individual might use such an application to gauge the noise levels at a construction site or in a loud factory environment.
The utility of these applications lies in their portability and accessibility. They offer a convenient method for obtaining quick sound level assessments without requiring dedicated, expensive equipment. Historically, professional-grade sound level meters were the primary tools for such measurements, but the proliferation of smartphones has made sound measurement capabilities widely available to the general public.