[sdiy] Decent 192kHz USB audio-interface

Brian Willoughby brianw at audiobanshee.com
Fri Apr 30 02:41:50 CEST 2021


Keep in mind that square waves include odd harmonics. So, to see three harmonics, the bandwidth would have to include 1x, 3x, and 5x. Without at least some of those three harmonics, a square wave wouldn't even look very square.

Brian W.

On Apr 29, 2021, at 17:13, Jay Schwichtenberg via Synth-diy <synth-diy at synth-diy.org> wrote:
> Thanks for the info. Never knew the reason things were done at 5X. Just took it as that's the way  things are done.
> Jay S.
>  
> On Thu, Apr 29, 2021 at 9:43 PM Jay Schwichtenberg
>> As someone that has worked in T&M a lot I would look at lab grade ADCs
>> and sample at 5X (400 KHz). Most test and lab equipment I've worked on
>> or with goes for 5X sampling rate minimum. When doing science Nyquist
>> rates aren't good enough in a lot of cases.
>> Jay S.




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