Hi - Firstly I would like to thank QA for such an awesome device
For the money this thing is incredible
I have a repair bench and be using it to fault find and verify repairs
Mainly to pro audio and DJ Equipment
I only received it yesterday but already put it to good use!
My question, I do a lot of repairs to DJ CD Players and controllers
A lot of these have a USB connection and can function as a DAC
I have tried the PC Mirroring and don’t seem to get good results.. bands widen, and what looks like comb filtering - but it happens randomly - sometimes get a good measurement sometimes not. I assume this is down to how windows handles audio. I have tried playing with many settings and sometimes it seems to help - but its never perfect
So, I thought I would try the Export Chirp Wav for Triggered Testing
The devices also have a USB Port to play back audio files
I had to convert the files to 24bit in audacity as the device dosent support 32bit
This actually works really well for frequency response using the exported Expochirp
What I really want though is a stepped sine 1 or 2 points per octave at 96khz and at levels from -20 to 0dBV in 2dB increments so I can visualize THD+N at various levels and frequencies
Exactly like the automated test AMP THD vs Frequency
Is this possible? Currently I have each octave center Frequency as its own track 30 seconds long and at various levels but this is really time consuming and I can’t see a simple way to include it all on 1 graph
Many Thanks for any help you can offer
Best Regards from the UK