How can I install it ?
Just follow the instructions. Don't be confused by GitHub making the releases page (which has the link to the installer) notoriously hard to find.
How can I install it ?
Hi Matt. Of course, just ask.Hi @Amir, thanks for the analysis! I'm scratching my head a bit on the measurement with -60 dBr (relative to 2V) because that noise floor seems lower than if input was shorted. But I can report back in 24-48 hours. Is there a chance you could make another measurement if I had a clear request? Thanks Matt
Thanks for the review. -110ish dB THD is about what you'll get from a good external sound card. The Focusrite Scarlett will get you there.
I generally don't mind custom controls ... if they add value or functionality. Sadly, that doesn't seem to be the case here. That's unfortunate.
Tom
It's still not an intuitive interface, though. A round knob is operated by turning it, not by sliding a finger across it (or rolling a wheel forwards/backwards). It's a clear mismatch between the expected action and required action.The ability to hover over a knob and change it with the mouse wheel or finger slide is pretty is tried and true and borrowed from DAWs (Digital Audio Workstations) where you are looking at a screen (mixing console) with hundreds of knobs and sliders.
It's still not an intuitive interface, though. A round knob is operated by turning it, not by sliding a finger across it (or rolling a wheel forwards/backwards). It's a clear mismatch between the expected action and required action.
Just purchased one.
So looking at this UI, it looks very much like the national instruments LabView GUI. Does the vendor offer the ability to access this directly through LabView source code, or is it only via automation of their application's UI.
You can always attenuate the fundamental with a notch filter (passive twin-T, for example). That'll buy you an additional 60-80 dB of dynamic range.
Tom
When I was reading, I was excited thinking it's for 20-20khz. Then I realize it's only fixed 1k. Very good for 1khz but not really useful, unfortunately.Digging up this old thread to show what this looks like with their QA480, which is a precision oscillator and notch filter.
View attachment 108546
Got the exact frequency of the oscillator (with the built in Wow/Flutter tool) Ran a sweep to characterize the notch, use their export filter tool which calculates the calibration for the notch with the frequency supplied. Selected that as my user filter, and here is the result.
Not bad for a pair of boxes available to the hobbyist.
This is described in more detail below on their site, but I just got mine set up and thought I'd give an update.
https://quantasylum.com/blogs/news/introducing-the-qa480
Digging up this old thread to show what this looks like with their QA480, which is a precision oscillator and notch filter.
Got the exact frequency of the oscillator (with the built in Wow/Flutter tool) Ran a sweep to characterize the notch, use their export filter tool which calculates the calibration for the notch with the frequency supplied. Selected that as my user filter, and here is the result.
Not bad for a pair of boxes available to the hobbyist.
This is described in more detail below on their site, but I just got mine set up and thought I'd give an update.
https://quantasylum.com/blogs/news/introducing-the-qa480
When I was reading, I was excited thinking it's for 20-20khz. Then I realize it's only fixed 1k. Very good for 1khz but not really useful, unfortunately.
I am assuming that @QAMatt would at least have been looking into licensing e.g. the Thesycon USB driver. Even if not, you can still try giving ASIO4All a shot and see how that does for you.I am hoping and expecting that a AISO driver for the QA402 is not too far into the future.