Hi, I have a QA401 so older code 1.924. I have the W&F visualizer v0.83.
I’m writing to verify this earlier version produces a valid measurement? I know it’s unweighted but the numbers I’m getting are actually better than expected. Are they real? Thanks.
Hi @Chicago, you can verify by creating a synthetic test waveform. ChatGPT is quite good at these tasks. Just ask it to create 32-bit stereo wave file of a 1 kHz carrier modulated with a 4 Hz tone at 1 percent and it should spit out the wave file (pasted below). You can then play that wave, capture it with the QA401 and see what it says. 4 Hz is important because it should read the same whether weighted or unweighted. If I had a 401 nearby I’d try it. But post what you see. Here’s the QA403 output:
