Dual - Channel FFT Analyzer for macOS.
https://apps.apple.com/ua/app/system-eye/id1250308889
This app requires audio interface with minimum 2 separately connectable audio inputs and 2 outputs to operate properly.
System-eye is a dual - channel fft analyzer. It measures the Transfer Function of the system under test by means of comparison: it compares reference signal and signal produced by sending the reference through system under test, so called, measurement signal, in frequency domain.
It was designed to be very simple and lightweight, supplying the core needs of experienced system engineer, without an overkill of well - known alternatives.
It only supports one measurement channel pair at a time, and so far cannot do such advanced stuff as Live average. It doesn't support SPL/calibration whatsoever.
Use external auido interface, input 1 - measurement mic, input 2 - reference signal. Select correct audio interface in Preferences; Send the same reference signal to input 2 and to measured system (use some kind of split). Use level indicator in the left bottom corner to make sure you get two distinct signals on reference and measurement channels.
Use AutioDelay button to turn on automatical delay detection between mic and reference. Without proper delay detection the measurement will be incorrect. Once you capture a trace of your measurement, Delta Delay reading becomes visible.
System-eye is equipped with pink noise generator that can be used as a reference signal.
You can capture traces of Your measurement for future reference. Traces are stored in Trace Manager. You can open Trace manager using "T" keypress, or using menu View -> Trace Manager. You can hide/show traces, change name and color and delete them.
T - open/close Trace Manager
S - start/pause the analyzis
P - show/hide phase plot
C - show/hide coherence plot
I - show/hide impulse response plot
G - pink noise generator on/off
For more shortcuts - look at the app menu, it's straightforward.
This app has been notarised and approved by Apple.
This app will collect minimal anonymous telemetry info nessesary for futufe improvements: audio interface channel count, typical averaging and smoothing used, scales overlap mode used.
Apple mac with minimum OS version 10.15 (Catalina). External compatible audio interface is a must.
Support page on Facebook: https://www.facebook.com/system.eyeser/