Audio Test is a multimedia application designed for Android that allows users to evaluate the audio path gain of various sound systems, including amplifiers, loudspeakers, and earphones. The app generates a list of tones at different frequencies, which are captured through the device's microphone. It calculates the relative power for each frequency, producing a graph that represents the audio path response. Notably, the measurements are relative, as 0dB is considered an undetermined value.

This application has practical educational applications, as demonstrated by a teacher who utilized it in a classroom experiment to determine the speed of sound using a cardboard tube. By identifying the loudest frequencies, users can discern resonance frequencies, which correlate with the speed of sound based on the tube's length and the wavelength of those frequencies. The app's tests are stored in a specific internal directory to enhance compatibility with Android 10.