Use APKPure App
Get RTA Audio Analyzer old version APK for Android
Turn your Android phone into a professional audio analyser with up to 30 bands.
Turn your Android phone into a professional audio analyser. Supports one, 1/2 and 1/3 octave filter and calibration. Displays overall Peak and RMS value for acoustical measurements.
Measure the frequency response of your audio equipment, identify tones and noises.
Bugs etc: info@radonsoft.net