AudioUtil

Audio analysis toolkit includes a scope, dB meter, FFT, spectrogram, and more.

AudioUtil features tools for capturing and analyzing audio signals from your devices microphone in real-time. Screenshots of the display can easily be taken through the utility's context menu. Touch the graph to show a value readout. Adjust multiple parameters like sample rate, buffer size, zero padding, window type, range, and themes to name a few.

Utility Descriptions:

Oscilloscope

• View sound waves in the time domain.

• Amplitude measurement by dragging on the screen.

• (Pro)Set trigger level to freeze display if audio exceeds amplitude threshold.

• Displays time and amplitude in readout.

Meter

• Amplitude readout with variable time falloff.

FFT

• (Pro)Linear and logged frequency axis.

• (Pro)Peak tracking for up to five peaks.

• Displays frequency and amplitude in readout.

Spectrogram

• Definable frequency limits to zoom in on desired frequencies.

• (Pro)Four themes/color maps.

• Displays time, frequency, and amplitude in readout.

Spectrum

• View a FFT analysis as a color spectrum.

• (Pro)Four themes/color maps.

• Displays frequency and amplitude in readout.

About permissions: This app requests minimal permissions to record audio and to write to storage. These are required in order to successfully capture sound and save screenshots to the device.