[sdiy] Best & fastest envelope follower schematic.. anybody ?

Tom Wiltshire tom at electricdruid.net
Wed Dec 15 12:59:29 CET 2021

Some envelope generators do feature a "Decay" pot to change the time constant of the filter.

Depends on the use case whether that is worth it. In a bit of studio gear where it might get used for various sources, yes, it probably makes sense. For a stompbox where the input is going to be a guitar, you have more knowledge about the signal and you can optimise the design for that.

> On 15 Dec 2021, at 11:37, Mike Bryant <mbryant at futurehorizons.com> wrote:
> Why not have both fast and slow filters, and a blend pot between the two so you can find the best trade-off for the incoming signal ?
> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at synth-diy.org] On Behalf Of rburnett at richieburnett.co.uk
> Sent: 15 December 2021 11:21
> To: Tom Wiltshire
> Cc: synth-diy at synth-diy.org
> Subject: Re: [sdiy] Best & fastest envelope follower schematic.. anybody ?
>> With such a simple filter
>> there *will* always be a trade-off between speed and ripple.
> Or to put it another way...  Increasing the order of the filter gives you a more favourable trade-off between speed of response and residual ripple.
> -Richie,
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