[sdiy] 20ms delay? analog allpass filter?

[Roman Sowa]

By pure accident I am now experimenting with delay lines, or rather 
transmission lines, although one of them is just 12ns, and the other 
about 24ns. My next fun project is delay line with lumped components, 
basicaly a board with a gazzilion of L&C in 0603.
Will gladly post the results.

Roman

W dniu 2023-02-07 o 13:08, René Schmitz pisze:
> Hi Neil and all,
> 
> On 07.02.2023 04:18, Neil Harper via Synth-diy wrote:
>> hey everyone,
>> I've been messing around with some digital stuff, where it's really 
>> easy to make delays to do accurate karplus-strong type sounds for 
>> example.
>>
>> Anyways, it got me wondering if there's any analog equivalent? Let's 
>> say I want a 20ms delay, is that in the realm of requiring a dedicated 
>> IC to do the delay, or is that possible with bog standard electronic 
>> parts like opamps and capacitors? 2
>>
>>
> Easy, you just need one component:
> 
> A couple thousand kilometers of coax cable should do the trick. :)
> 
> 
> Or make a transmission line instead from lumped components.
> 
> Like the one used in Hammond organs for the Scanner Vibrato.
> 
> https://modularsynthesis.com/modules/DJB-scanner/scanner.htm
> 
> 
> Best,
> 
>   René
> 
> 
> -- 
> synth at schmitzbits.de
> http://schmitzbits.de
> 
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