virtins.com

Screenshots were taken after FR was taken and generator stopped hence no signal showing in the oscilloscope window , while measuring it was around 850mV

Increasing resolution to 8912 looks like this:

Increasing resolution to 4096 and increasing sweep time to 1000sec with same Moving Average 5 points gives me this , looks better but still looks not exactly right

It seems I'm getting nowhere with this
This is a loopback FRswph of my soundcard with standard settings and applied Smoothing via Moving Average 5 points linear, soundcard should be +/-0.25dB within 20-20kHz range
Screenshot (479).png
This one is with a longer sweep 500sec
Screenshot (480).png ...

Thank you I’ll try this after my holiday,
I have watched a loop back video in educational section , very informative btw are there any more videos anywhere to be found the reason I ask forum is a bit glitchy and keep coming up with the error

It looks like that you used the preconfigured panel setting "FRswph" to perform the frequency response test. In this method, the signal generator sweeps from 20 to 22050 Hz linearly over 300 seconds. The spectrum analyzer is set to peak hold mode with an FFT size of1024. The following screenshot ...

Another question , if I were to take FR of the soundcard I use is there a way to use it as a calibration file when testing other devices?
One more, what is the most accurate way of taking FR ?
Thank you

I've tried again and it works , thank you.
Great software

Thank you for the quick reply, does it apply if I use external generator to do the sweep?
I started using external one as USB card I use seems to have some 50Hz and harmonics and headphone out some 1kHz noise, anyway I need around 1V RMS signal and soundcard is not capable of outputting that much ...

Good Morning
First post so be gentle , I am slowly trying to learn about electronics and adequate measurements. I bought Pro version while ago mainly to help me with turntable and cartridge setup but I’d like to learn bit more about , so far I have used built in measurements but I bought function ...