Allpassphase Instant

"Welcome, Lily," he said, his voice like a gentle breeze. "I've been waiting for you. I think I have just the thing you're looking for."

“They are only for audio.”

However, because allpass filters introduce delay (group delay), they can push the start of a sound back slightly. If misused, an allpass chain can rob a drum hit of its punch by delaying the transient just enough to lose its impact. allpassphase

[ \phi(\omega) = -\omega - 2 \arctan\left( \fraca \sin \omega1 + a \cos \omega \right) ] "Welcome, Lily," he said, his voice like a gentle breeze