For reference, the blue trace shows the same input recorded at 384 kHz.
Just so I understand: so if you measure at PCM 384kHz, then none of the 8 filter options make a difference ?
Everything will measure the same?
For reference, the blue trace shows the same input recorded at 384 kHz.
I clearly see the difference if changing filters at PCB 384k, 180-190kHz area changes a lot.
As long as the last link in that chain before the ADC doesn't mind the Cosmos ADC's rather low Zin and can produce high enough output voltage, then sure!Forgive me for asking but can the COSMOS ADC be used to record a effects/mastering chain? Looking for a cheap ADC for this purpose.
Thanks for the reply and answer! The Cosmos should have a very good frequency response for the price comparable to some DAC’s costing 5-10x as much right?As long as the last link in that chain before the ADC doesn't mind the Cosmos ADC's rather low Zin and can produce high enough output voltage, then sure!
Cosmos ADC frequency response is rated at +0.1/-3dB 5Hz-190kHz.Thanks for the reply and answer! The Cosmos should have a very good frequency response for the price comparable to some DAC’s costing 5-10x as much right?
Most ADCs have good enough frequency response.Thanks for the reply and answer! The Cosmos should have a very good frequency response for the price comparable to some DAC’s costing 5-10x as much right?
I got to the bottom of the problem - it was the word clock clocking the DAC - the other ADC I was testing with was producing the master word clock for the whole system (apart from the Cosmos) so didn't reveal the problem when testing through itself, when I switched the clocking of the audio interface to 'internal' the frequency response came back. The problem didn't show up when tested new because I used USB for the DAC rather than SPDIF and the audio interface (RME HDSPe RayDat) was out of the equation.charliecola: What is your audio software chain? Any chance your "now" case going through the windows audio engine?
looks like you've changed the filter setting in Cosmos_Tweak app.I am wondering if anyone can help with high frequency roll off on a Cosmos ADC on a particular computer.
Everything tests well apart from frequency response - when I first got the ADC everything was perfect when tested on this particular machine including the frequency response... now though, the high frequencies roll off substantially (please see image below).
It works fine on my laptop but on the desktop I get this high frequency roll-off.
I have tried removing driver, reinstalling driver even tried other filters in the tweak app, cables, different usb port etc... just can't work out what is causing is - It is strange that it works on laptop perfectly and also worked before on this machine perfectly but now has this single issue.
Any help would be appreciated.
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