[sdiy] companders

[blacet at blacet.com]

Compandors can have quite a pronounced effect on noise levels. Analog
delays in particular made good use of them to produce a reasonably quiet
device from a "hiss factory"!

The number floating around in my head is -20 dB.

> Another solution would be the use of HighCom Chips or Modules from
> Telefunken.
> But this option would only be interesting for Prototypes and not for
> series production
> as these chips are now obsolete.
>
> But if you can find chips or modules they do a nice job.
>
> Eumig and Telefunken TapeDecks used these modules and worked fine.
>
> Ciao
> Peter
>
> ________________________________________
> Von: synth-diy-bounces at dropmix.xs4all.nl
> [synth-diy-bounces at dropmix.xs4all.nl] im Auftrag von tu at alphalink.com.au
> [tu at alphalink.com.au]
> Gesendet: Donnerstag, 07. Oktober 2010 10:43
> An: mark verbos
> Cc: Synth DIY
> Betreff: Re: [sdiy] companders
>
> I don't think the 571 style compandor works very well as a noise reduction
> system. The Roland SBF flanger uses this method and is still rather noisy.
>
> Eventide used DBX type II noise reduction on their H910 and H949
> harmonizers and the H910 delay sounds superb for a 10 bit system. Why not
> pick
> up a cheap DBX encoder/decoder and try running the signal through that
> pre/post your delay?
>
> /Tristan
>
> On Thu, Oct 7th, 2010 at 7:00 AM, mark verbos <mverbos at earthlink.net>
> wrote:
>
>> I have a noisey as hell delay circuit that I'm trying to rethink. How
>> much
>> noise reduction can one expect to get from a classic 571 compander?
>>
>> Mark
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>>
>>
>
>
>
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