Reply by Christopher Moore●January 24, 20052005-01-24
Dear Gordon,
Go to my website http://www.sevenwoodsaudio.com/ and look for
Consulting and articles, and find article AN-11. It should be helpful
to you.
Chris Moore
On Mon, 24 Jan 2005 08:41:45 -0000, gordon_ao wrote:
Hello Folks
At the moment I am trying to design a one pole simple IIR digital
filter to simulate exponential delay effect with simple equations
like 1 - e^(-t/T), where T is a known time constant. I think an one
pole IIR filter will do it: Y[n] = alpha/[1-(1-alpha)Z^(-1)] can
simulate the delay effect when alpha < 1. But I am quite pullzing
how the alpha will be determined. i'd appreciate if you shed some
light on this.
Best regards,
Gordon Ao
-----------------------------------
Seven Woods Audio, Inc. Christopher Moore
Concepts, Products, Circuits for Audio Analog/Digital
moore@moor...
http://www.SevenWoodsAudio.com
Reply by gordon_ao●January 24, 20052005-01-24
Hello Folks
At the moment I am trying to design a one pole simple IIR digital
filter to simulate exponential delay effect with simple equations
like 1 - e^(-t/T), where T is a known time constant. I think an one
pole IIR filter will do it: Y[n] = alpha/[1-(1-alpha)Z^(-1)] can
simulate the delay effect when alpha < 1. But I am quite pullzing
how the alpha will be determined. i'd appreciate if you shed some
light on this.
Best regards,
Gordon Ao