Allpassphase |top| Jun 2026

[ \tau_g(\omega) = \frac1 - a^21 + 2a \cos \omega + a^2 ]

If it doesn't make things louder or quieter, what is the point? Allpass filters are the utility knives of DSP. Here are their three main superpowers: allpassphase

Have you ever wondered how some digital reverbs sound "smear-y" while others sound tight? Often, it’s about phase. [ \tau_g(\omega) = \frac1 - a^21 + 2a

“All-pass filters don’t change the signal at all.” allpassphase