Quadrowave card

Caladan
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At this point in time any Caladan news excites me! So I assumed I’d would be worth the read for you as well. :grin:

As it seems Paula Maddox, who’s working on her wavetable-card for the Caladan, is also blogging about her progress on that card that she called the Quadrowave for now.

https://www.maddox.pro/?p=301

:raised_hands:t3:

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It’s pretty wild how powerful the Caladan will be on release. I pre-ordered four voices… Now being able to add four 4op FM and four wavetable voices on just two cards, FANTASTIC.

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The Opl-3 FM card will be even 6 voices per card :raised_hands:t3:

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Even better!

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Which filters will be in the Quadrowave? I read VCFs, but I wonder which.
Also, will it be 1 shared filter for all 4 voices or a filter per voice?

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The language being used makes it sound like VCF per voice. For example, from Paula Maddox’s page, talking about developing the QW:

“I still have to debug the VCFs but the other parts, like DACs and VCAs are the same as the OPL3 card”

Based on that, I would think two things:

  1. each card has multiple analog filters. This suggests either filter-per-voice or multiple different filters that can be selected for all the filters, which would be a strange implementation.
  2. because “bu the other parts… are the same as the OPL3” implies that the filters are NOT synthex filters, since if I recall correctly, Brad said that the OPL3 card uses those.

My guess is that they’re filters similar to the Microwave, which were 24db/oct LPFs, but that’s based on nothing.

EDIT: if you look at the QW card posted to the Isla IG, you can clearly see four VCF labels, 1-4! So definitely one per voice.