[goobicii]

can you make digital filter that doesnt change volume or even phase but introduces gibbs phenomenom post and pre ringing like linear phase would?   

 

[MindsMirror]

I believe magnitude (volume) and phase are sufficient to completely describe a discrete audio signal. If your filter can't change at least one of those, it can't actually change the signal at all.

 

[RRod]

If you mean "can you isolate the ringing of a linear-phase filter", then you can try applying the filter to an impulse (pick a sampling rate), then subtract the result from the impulse.

 

[spruce music]

Sure. Just do a digital steep filter in software. Of course any signal that went thru an ADC will have anything to cause ringing already filtered out.

 

[pinnahertz]

Sure. Just do a digital steep filter in software. Of course any signal that went thru an ADC will have anything to cause ringing already filtered out.

Steep Band-limiting a square wave will display the Gibbs phenomenon.  The ADC filter will not help or eliminate the effect.

 

[spruce music]

Steep Band-limiting a square wave will display the Gibbs phenomenon.  The ADC filter will not help or eliminate the effect.

Gibbs looks like ringing, but is the proper result for limited bandwidth. In addition steep digital filters can ring if there is signal in the transition band between flat response and cutoff. Yes a square wave would cause actual ringing. If it had been thru an ADC the filtering would remove signals from the transition band. So the square wave would have Gibbs, but not frequencies to ring a digital filter.