--- In
DW8000@yahoogroups.com, Stefan Rinass <st@...> wrote:
>
> Am Sonntag, den 12.02.2006, 14:55 +0000 schrieb Glen Stegner:
>
> > Also the DW8000 does not have DCOs or VCOs, it's purely digital
> > oscillators (DOs, if you will) or single-cycle SAMPLED waveforms.
>
> Hm....
>
> Quote:
>
> "Oscillator operation
>
>
>
> The PAI (phase angle increment) value and PAR (phase
>
> angle register) value are added and the result is stored again
>
> in the PAR. The PAR value is used as the wave table ad-
>
> dress. The wave table stores different -harmonic- configura-
>
> tion data for each octave on the keyboard.
>
> IC47 (MB64H129) performs the processing needed to use
>
> the PAR value as the wave table address.
>
> Finally, data read from the wave table is converted to an
>
> analog waveform by a D/A converter.
>
> Time division multiplexing enables dual oscillator 6-voice
>
> sound source capability.
>
> Maximum simultaneous output of this system is 8 voices
>
> x 2 oscillators.
>
> Note: Given a sampling frequency of 50 kHz, PAI data
>
> N = 2" x f/50 x 10â (where f is the pitch frequency)
>
> is rounded to an integer value for N and converted
>
> to a hexadecimal number."
Is this supposed to contradict what I said? Whom are you quoting? As
far as I can tell this just gives info about how the circiuts
interpolate the digital waveforms. Of course all digital waveforms come
out as analog in the output stage. Everything is analog at the output
stage or else you wouldn't be able to hear it. It doesn't mean the
oscillators are analog.