[music-dsp] Is beating the same thing as flanging?

David Moylan dave at westphila.net
Sun Nov 14 14:12:19 EST 2010

Optocouplers are still in wide use in the FX world.  The Vactrol VTL 
series seems the most popular these days so people also roll they're own 
with an LED or bulb and an LDR.

BBDs are still in production in China.  Clones of the Panasonic MN32xx 
series are available.  Smallbear Electronics is a popular DIY FX pedal 
supplier that carries them.


David Reaves wrote:
> In the 1970s I built, from a kit, a wonderful Craig Anderton-designed phase-shifter that used CLM6000 opto-couplers to control the effect.
> Man that was a sweet sound!
> I also built a PAIA kit bucket-brigade flanger that was ragged but got the job done. [analog bucket-brigade devices, for those who do not know, were primitive, non-digital devices. As you increased delay, the noise level also increased very noticeably. They are not made any more. Which, even with their weaknesses, is a shame.]
> Two VERY different effects, BTW.
> Yet neither has the beauty of analog tape flanging, which to me is the gold standard.
> David Reaves
> On Sun, 14 Nov 2010 12:11:42 +0000 Jerry Evans <jerry at novadsp.com> wrote:
>> On 14/11/2010 10:49, Richard Dobson wrote:
>>> I seem to recall early phasers used bucket-brigade delays, rather than 
>>> explicit filters, as such.
>> IIRC 'classic' phasers would use FET's to control filters, rather than 
>> having a BBD for delay.
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