432 Hz Pure Tone Sine Wave. 1HR HQ
Is there an app that reads frequencies?
Spectrum analyser gives insight into your sounds and deconstructs the audio spectrum, showing the levels of the various frequencies in your audio signal. The built-in sound meter provides high-quality measurement results when measuring ambient noise levels in a multitude of real-life scenarios. Selected bar tracking.
Can I use my phone as a spectrum analyzer?
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.