Audio Spectrum Analyzer for Android
By Woheller69
This open-source Android analyzer displays audio frequency information from the device’s input. It is useful for educational experiments, locating tones and quick relative checks. A phone microphone’s response and automatic processing limit measurement accuracy. Do not interpret an uncalibrated mobile reading as a laboratory result; use appropriate equipment and calibration when absolute level or compliance measurements are required.
A useful display begins with a clear question and appropriate measurement settings. Confirm important observations through listening or a second check, and document calibration where absolute measurements matter.