Note measurement will not remain stable with a steady tone input

[jano2358]

I placed my phone generating 294Hz sinusoidal next to the mic, Lingot next to Fmit for comparison, here is a screen capture:

2023-07-25.18-36-40.mov

With the instrument that is much worse. In preferences I have this:

I tried the 'Frequency refinements' thing but nothing different happens.
Should I use different configuration or is this a problem of the software?

[gillesdegottex]

Hi, quite interesting.
Could you post a link with the recording of the waveform? (like opening audacity in parallel and capture the same input as FMIT and Lingot.

[jano2358]

fmit_report.zip

2023-08-06.14-02-21.mp4

In the compressed file is the audacity project with the recording. Audio is unprocessed.

[gillesdegottex]

Thx a lot @jano2358
I'll try to have a look at it whenever I gather a bit of time.