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From: NaNo oeysaase@online.no
Subject: Re: Delfina
Date: Tue, 22 Apr 97 22:28:00

Tomasz Nidecki wrote:

>>>appreciate support from Jyrki and Teemu.
>>Ok, does Tejo Kinnunen have something to do with the card?
>Nope

I just thought so, since his from Finland and the card is made in Finland..
erhmm... anyway, I read that he is going to quit Soundstudio on the amiga and
go to the pc scene instead. I hope this doesn't mean it will never be any more
updates on the Amiga version.

>>does that depend on the prosessor I'm using? I will achive studio quality hd
>>recording with delfina and Zorro- II?
>Zorro 2 can easily achieve 48Khz 16-bit stereo, the Zorro 2 limitations refer
>to using the DSP for mixing the channels, Zorro 2 isn't quite upto that.

Well, I have already ordered the Zorro-II upgrade and the delfina card from
Sezam software.. my local Amiga dealer.. I just need a cheap option for
studio quality hd recoring right now, so if it will do the job, then I'll
deal with Zorro III and the upcoming delfina card later.

>>know about the prosessor in A-3000 and how high it can be upgraded for
>>maximun speed.
>A3000 is a 32-bit Amiga, it has Z3 slots, CPU slot (same as A4000), it can
>run OS 3.1. A4000 is largely based on the A3000. the 3000 is better made and
>is of a better quality IMHO

Well, this only means I'll have to save up some money and get moi self an
A-3000. I know somebody that has  one, but I'm not sure about how much money
he'll charge for it. He also told me that they couldn't use other hd's than
SCSI.. and that they weren't cheap. Is the slimline an SCSI hd, or an IDE hd?

>>delfina card enabling me to program effects the easy way.. or is this wrong?
>>Maybe it will bump up some groovy utils for the card in the future..
>The Delfina has to be programmed in DSP machine code. Although I hear it's a
>quite nice chip to program.

Hmm.. sounds easier with an effect prosessor. You just push thoose buttons,
turn thoose knobs and off you go. I just spent the last couple of days
getting a grip on how to use MIDI controller commands with Octamed. Can't wait
for my first lesson learning how to program in C. yumm! yumm!

>>card if it cannot be used properly by software?   I would need about eight
>>stereo channels max for my purpose.
>zorro 2 bus just prevents one of two of those things. The DSP is currently
>used for processing audio streams. An mpeg audio player using the DSP is
>currently being written.

Does that mean i could watch CD-I movies on my cd-rom?

>>I hope the card will give me top sound quality , because I'm planning to use
>>it in a cd project. The Aura 16 bit versjon wasn't really as good as I
>>thought it would be... good, but not enough.
>Aura used a 12-bit chip and was a cheapo device. The A/D D/A convertor on the
>Delfina is the same as one the AD516 and Toccata.

The sticker on the Aura package states that it is an 16 bit sampler. The
software also tells me I'm playing 16 bit sound, but the manual seems to be
written for the 12 bit versjon. Doesn't the aura sampler come in three
versions.. 8, 12 and 16? or does the package say it's an 16 bit sampler, but
still it's only a 12 bit sampler?

Anyway, I read an article in.. I think it was Amiga Format, or CU-amiga. It
explained that you could change the amiga sound filters with some better
filters. The article stated what filters to buy and where to solder them to
the motherboard to improve the amiga sound. And I meet a guy on a BBS who
had done it on an A-500, getting much better 8 bit sound.  the trouble with
amiga 8 bit sound is the noise from the hardware. It can be solved turning on
the LED filter, but if it could sound better than that...

I don't know much about electronics.. but I managed to configure an A-500
1.2 to have 1mb chip memory by following an article in Amiga format. If there
was some explanation on how to do this, I could maybe do it myself or get
someone to do the job for me.

ok, last night.. well, I had to investigate this.. so I opened up an A-1200
and my Aura sampler to see how the filters components looked like. On the aura
sampler I suspect they are the HOVER components..  ones like the two before
the output on the sampler. They are called '16V(RE) HOVER 10uF' There are
twelve of them and the only difference is the uF ... ranging from 10uF to
47uF..  There is a big hoover with 470uF.

Are this really the filters, or am i wrong? I see them in the A-1200 to.. if i
suspect correctly the 'value of uF' has something to do with how the filter is
filtering the sound.

Do you know of any textfile explaining how to change the a-1200 filters with
some better ones? It is possible.

I would like to take the filters from the aura sampler and replace them
with the ones on the a-1200...  then solder the a-1200 ones on to the aura
sampler so I could sell it still working.


Do you think it would be possible to change the
filters with the ones on the Aura sampler?




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