Audio Test 2.5.24

The test is conducted across a range of frequencies to generate a comprehensive graph of the audio path response. This assessment aims to evaluate the audio gain of a system that typically includes an amplifier and loudspeaker; however, it can also be utilized to assess standalone loudspeakers or headphones. The device produces a series of tones, and the audio signal is captured via the microphone. Consequently, the power levels for each frequency are calculated. It is essential to note that 0dB serves as a reference point rather than an absolute measurement, thus the results should be interpreted as relative values.

In an educational context, a teacher employed this application for an experiment in which he successfully measured the speed of sound using a smartphone and a cardboard tube. By identifying the loudest frequencies, he pinpointed resonance frequencies that directly correlate to the speed of sound, with the length of the tube influencing the wavelength of these resonant frequencies.

The tests are readily accessible within the app's internal directory, enhancing compatibility with Android 10 (Android/data/com.fbrlcu.audiotest).