[sdiy] Generating a large number of CV outputs

[Gordonjcp]

On Sun, Dec 10, 2023 at 05:02:09PM -0800, brianw wrote:
> Exactly.
> 
> My paragraph followed a question about minimal reconstruction filtering, which is what removes images after a DAC (anti-aliasing filters prevent aliasing during ADC). Since I've seen commercial products that failed to remove images of their DAC output, I wanted to ensure that my designs don't suffer the same mistakes.
> 
> The challenge is that reconstruction filters can be expensive to do correctly, unless there's significant oversampling (which is expensive on the digital processing side). It's easy enough to plop down a single-pole low-pass, but that's not good enough in nearly all cases.

I'm not saying you're wrong, but I think you'd need to demonstrate that pretty clearly to me before I'd accept it was even detectable.

I cannot see how a continuous signal can possibly produce imaging, even if the filtering after it is quite poor.

-- 
Gordonjcp