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Subject: Re: [yamahacs80] Replacement KAS board? - Re: Voice allocation ?

From: "JH." <jhaible@...>
Date: 2009-02-22

No voice stealing on my CS50.
When I play more than 4 notes, the last ones are ignored.

JH.


----- Original Message -----
From: "Max Fazio" <faxiomas@...>
To: <yamahacs80@yahoogroups.com>
Sent: Sunday, February 22, 2009 7:04 PM
Subject: Re: [yamahacs80] Replacement KAS board? - Re: Voice allocation ?


Wow
I'm getting different feedbacks, now I'm reading a complete different answer
from Scott (lost somewhere by Yahoo, thank you!): I mean, once I remember I
∗did∗ read that the CS assigner ignores any more voice pressed; so,doesn't
it steal a voice when all are actually playing?? That could make sense as
the voice block S/R could accept a number of inputs/avaliable voices;
anybody would confirm this?
M
----- Original Message -----
From: David Rogoff
To: yamahacs80@yahoogroups.com
Sent: Sunday, February 22, 2009 4:32 AM
Subject: [yamahacs80] Replacement KAS board? - Re: Voice allocation ?


Sorry if some attributions got messed up in my in-line notes below.

Anyway, it seems like a few people have worked on replacement KAS
boards for the CS80. However, it doesn't appear than anyone has gotten
one to the point of mass production / sales. I'm wondering if those
of you working on them would like to get together to share ideas and
maybe get a joint design working and ready to sell to the CS80
populous. I know there are issues of intellectual property and getting
paid for design work, but I imagine, in the amazingly polite society
of CS80 folk, this could be worked out.

We could at least have fun brainstorming what features a KAS
replacement board would bring:

MIDI in/out
Disable bad/out-of-tune voices
Auto (or least least assisted) tuning
Mono mode - with various key priority
Unison mode (dynamic?)
Different key assign modes
Different glide/gliss curves

A lot of stuff I can think of would also require replacing the TSB and
TKC board. Basically, you end up replacing all the electronics under
the keyboard, which would be great, and theoretically not too complex,
but a lot of design work and rewiring!

Dream away!

David

Ernest Meyer wrote:

> Scott
> Doesn't the CS have, already embedded, a "steal the oldest" logic which
> integrates with this weird pitch code encoding+LRU?
> Basically, for what I could understand, in a Sustain-II state, if
you have
> all 8 voices playing and have a new note playing, the oldest voice
playing
> is stealed by the new note

Is this true? I don't have a CS80 around at the moment, but I could
swear, at least in Sustain-I mode, that if you are holding eight keys
down, it ignores any subsequent key presses.

>
> ----- Original Message -----
> From: The Old Crow
> Colin f wrote:
>> You'll find the GX1 KAS schematic here:
>> http://www.sequentix.com/gx1/GX1-KAS.zip

Just looked at this. Maybe I don't want to ever work on one of these
and will stick with the (relatively) simple CS80 :^)

> I built a CS-KAS based on PICs a while ago. It works, but I did not
> adopt their strange assign order and instead went with the two popular
> ones, "steal oldest note" and "steal least used note". I need to finish
> that thing, it still needs the gliss/porta function to actually work.
> Never enough time...

Do you have mono and/or unison modes? For mono, you'd want choices of
high-note priority, low-note, and last note.




[Non-text portions of this message have been removed]



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