19AES-EI02: Not Your Everyday Filters

Presenter:
Jayant Datta, Audio Precision - Beaverton, OR, USA

The purpose of this tutorial is to introduce and expose audio engineers to additional filters that have interesting properties but are not as commonly known to our community.

In this tutorial

We take a deeper look at allpass filters – where phase (instead of frequency shaping) is used as a manipulating tool
We take a closer look at real-time zero-phase IIR filtering techniques
Finally, we look at multi-rate sampling systems, where in addition to polyphase FIR filters we also look at polyphase IIR approaches