DACS with filters
Brick-wall" lowpass audio filter needs no tuning - EDN
Why a low-pass filter applied to a square wave gives a weird wave? - Electrical Engineering Stack Exchange
Ringing False: Digital Audio's Ubiquitous Filter Page 2 | Stereophile.com
Low-pass Filters | Filters | Electronics Textbook
Practical Filter Design for Precision ADCs | Analog Devices
How to Build Audio Filter Circuits - Circuit Basics
AP System One/Two Brick-Wall filter | It's only Audio
Band Stop Filters are called Reject Filters
Ideal/Brick wall Low/High-pass filters: Fourier approach not working - Mathematica Stack Exchange
Two-Outlet Audio Surge Protector | Brick Wall
AP System One/Two Brick-Wall filter | It's only Audio
Theoretical Background
Low-pass filter - Wikipedia
Further With Filters
What are the key parameters of filters
Filter Basics: Stop, Block, and Roll(off) | Nuts & Volts Magazine
Practical Filter Design for Precision ADCs | Analog Devices
The Complete FIR Filter Guide for Loudspeakers & Audio - Eclipse Audio
Brick-wall" lowpass audio filter needs no tuning - EDN
AP System One/Two Brick-Wall filter | It's only Audio
Brick Wall Filter
The Complete FIR Filter Guide for Loudspeakers & Audio - Eclipse Audio
Audio EQ: What Is A Low-Pass Filter & How Do LPFs Work? – My New Microphone
Nyquist Channel: Brick Wall Filter – Engineering Math (a work in progress)
