[sdiy] Delays and companders

David Moylan dave at westphila.net
Mon Mar 4 19:40:47 CET 2019


SA572?


On 3/4/19 10:32 AM, ulfur hansson wrote:
> 4305's from THAT have been marked EoL :(
> 
> mán., 4. mar. 2019 kl. 13:10 skrifaði Tim Ressel <timr at circuitabbey.com 
> <mailto:timr at circuitabbey.com>>:
> 
>     Hi,
> 
>     In making a BBD delay often a compander is used to reduce noise. One
>     schematic had a clever circuit that used one rms-dc block to run both
>     the compressor and expander VCAs. This would make sense in a non-delay
>     circuit. But in a delay where the output is not time aligned with the
>     input, is it the right thing to do? It seems to me you want completely
>     separate compressor and expander circuits with their own rms-dc blocks.
>     Say a pair of 4305s from That Semi. Or am I in the weeds here?
> 
>     -- 
>     --Tim Ressel
>     Circuit Abbey
>     timr at circuitabbey.com <mailto:timr at circuitabbey.com>
> 
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