Are we Live?

[patchell]

    I assume this must mean that the list is back up again!!!!

    oscillators:256 means 256 oscillators.  These are just simple accumulator type
oscilators (as outlined in Musical Applications of Microprocessors).  The
frequenency control and the phase accumulator will be 24 bits wide, which should
give more than addequate frequency resolution.

    Algorithm Table: You can think of it like a program.  It will be used to
combine the outputs of the oscilators.  Mostly what it does is determine if you
add the oscilator to the output, or use it to modulate another oscilator.  This
weekend I am going to try and draw a block diagram of the thing, hopefully, this
will spell it out a little clearer.

Troy Sheets wrote:

> Sounds cool, can you explain more about it?  When you say "oscillators:256"
> what exactly does that mean?
>
> Whats the alogrithm table?
>
> Any filters?
>
> -troy
>
> On Thu, Sep 14, 2000 at 12:40:39PM -0700, Jim Patchell wrote:
> >     Just checking to see if SYNTH-DIY is up and running.....
> >
> >     Well, just in case...
> >
> >     I have been doing a little work on putting a digital synth into an
> > Altera ACEX EP1K30.  I am pretty amazed, what I had in mind for a
> > minimal system seems to fit just fine.  Here are the specs:
> >
> >     Interface: 68000 processor bus, 16 bits.
> >     Look up table: Up to 16 meg per bank (a bank contains all of the
> > waveform for one cycle) with TBD number of banks.  Memory is 16 bits
> > wide.
> >     Oscilators:256, 24 bits, 96KHz sample rate.
> >     Envelope Generators:256, 16 bits.  There are to register backs, an
> > increment register, which controls how much the envelope changes value
> > per sample period, and a ramp to value, which will generate an interrupt
> > when it is crossed.  The micoprocessor is responsible for changing these
> > values to create the composite envelope.
> >     Algorithm Table:256 words by TBD bits.  This memory determines how
> > everything is processed.  What gets added to what, who gets modulated by
> > who.
> >     Outputs: A stereo digital stream that can be interfaced to your
> > regular 24 bit CD DACs.
> >
> >     Well, I hope the list is actually up when I send this.
> >
> >     -Jim
> >
>
> --
> ------------------------------------------------------------------------------
> tsheets at saturn5.com                                  <- You have found me
> http://www.saturn5.com/tsheets/audio                 <- my .mp3 tracks
> "I just don't have the discipline to be a hippie"    <- Homer J. Simpson

--
 -Jim
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