Multi Effects - Phaser
-
- KVRer
- Topic Starter
- 1 posts since 3 May, 2011
Hi, I am trying to build some simple multi-effects. Anyone any ideas on how to create a very simple phaser effect? I have made a flanger and was thinking they would be similar . I am thinking I will need some allpass filters and then modulate through the variable delay input? Any help would be appreciated!
Thanks!
Thanks!
-
- KVRist
- 223 posts since 19 Apr, 2011
yeah i am guessing you'd use your basic flange circuit and duplicate it, and putting a different filter at the input of each stage and then mixing that signal. i am going to try this myself. i made a very simple multi-stage flanger that sounded alright, but i abandoned it to work on other projects. i'd be interested to see what you've come up with and how it compares to my circuit.
-
- KVRist
- 110 posts since 5 Nov, 2004
Hi! I made a simple phaser circuit.
http://www.kvraudio.com/banks.php?s=dl&id=1484
Other parameters may be suitable for you.
http://www.kvraudio.com/banks.php?s=dl&id=1484
It's just what you said and I only gave some parameters after repeated trial and error.Metz6 wrote:I am thinking I will need some allpass filters and then modulate through the variable delay input?
Other parameters may be suitable for you.
-
- KVRist
- 223 posts since 19 Apr, 2011
after reading this i gave it a shot myself. one thing i encountered was that it is not very well explained (in my opinion) what the parameters of the allpass element are. the delay input is obvious. the 'a' and 'b' are not quite so obvious to me. the concept of the allpass filter is somewhat new to me though. it seems that they basically accept useful inputs between -1 and 1. if anyone could explain to me in somewhat layman terms what exactly these inputs do, i'd appreciate it.
-
- KVRist
- 239 posts since 17 Aug, 2005
If you want to create a standard "Phase Shifter" in SB, you'll find that the "allpass" filters supplied do not have the range to create the effect you seek. Those "allpass" are better suited to creating reverbs and diffuse delays.
Use the "bandstop" filter and be sure to tie the "F1" and "F2" inputs together, feed those inputs with an oscillator tuned to the desired center frequency and use an LFO to modulate the center frequency. Here's a simple phase shifter I've created. Try this for yourself:
Use the "bandstop" filter and be sure to tie the "F1" and "F2" inputs together, feed those inputs with an oscillator tuned to the desired center frequency and use an LFO to modulate the center frequency. Here's a simple phase shifter I've created. Try this for yourself: