RTA Audio

RTA Audio

Realtime analyzer with recording and Visualizer module with export.

Realtime analyzer

Realtime analyzer gives you the ability to analyze realtime audio input (built-in microphone or external audio accessory inputs) using Fast Fourier Transform with selected window function.
You can also record the input for future offline processing or export.

Visualizer

This module presents you the results of offline audio analysis.
Selecting previously captured recording gives the graph view, spectrogram and waveform of the audio data.
Simple controls gives you the ability to play, loop, seek and change rate of the recording synchronized with analysis data presentation.
Export function allows you to share or archive your analysis.
Resulting PDF document contains basic recording information, spectrogram, peak & RMS graph and frequency table data with maximum peaks (with the time of the occurrence in recording)

Features

Resolution: 1/2 - 1/96 Octave

Logarithmic frequency scale

Fixed frequency range (20 - 20kHz)

Tone scale view C- H (A = 440Hz)

Peak hold graph

Peak average graph

RMS average graph

Pointer (watch) function

Peak and RMS input meter

Audio input specification

Audio session mode - measurement

Input gain control

Sample rate: 48000 Hz

Bit depth: Float32

Channel: 1(mono)

Frequency range: 20Hz - 20kHz

Dynamic range: -100dB - 0dB

FFT (Fast Fourier Transform) specification

Frame size: 8192

Overlap: from 60% to 90%

Smoothing Window: Bartlett-Hann, Blackman, Blackman-Harris (default), Blackman-Nuttell, Cosine, Flat Top, Gauss, Hamming, Hann, Lanczos, Nuttall, Rectangular, Triangular

Hardware acceleration,

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