MOTM

>>> A typical flanger would use a 512 or 1024 BBD and
>>> offer delays less than 1mS.
>> 
>> Actually the delay time in the MXRs I've got goes up to around 5ms or so,
>> and sweeps back down to a hair above 1ms.
> 
> There's a slight misunderstanding: small delay time means sweeping *up*.

Well, it depends on what you mean by "up". I meant "goes up" in the sense of
"increases to". If you mean the perceived pitch movement of a modulated comb
filter (which is what flanging is), then yes, decreasing the delay time
creates the effect of upward pitch movement.

> With long BBDs you get flanging in the lower range only. For "full range"
> flanging you need a short BBD line (like 512 ... 1024 steps), kust as John
> said.

I don't know what you mean by "lower range only" or "full range".

--Adam