Spectral Audio Analyzer
RadonSoft
Cost: Free
Rating: 4.2
Requirements: Android 1.6 and up
The Spectral Audio Analyzer app for Android displays sound as a colored spectrogram. Measure environmental noise or test your speakers with up to 8 kHz of frequency bandwidth. View patterns and unwanted noise via the apps colored display—all you need is an Android device with a working microphone.
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