[sdiy] ppg waves

[Paul Maddox]

Neil/Christian,

Fainling that, take a look at the Monowave ;-
Www.Modulus.Synth.net/Monowave/

Waveforms taken from the wave 2.x with permission and under license from
Waldorf.
its uses an AVR for its main CPU..
It has 256 waveforms, Two oscillators, two sub oscillators and a moog ladder
filter.
Theres a stack of examples there, some even showing MIDI CC control of the
waveforms (kindly provided by Paul Nagle), whilst not being a wavetable
synthesiser, it certainly sounds very much like a PPG...
I am currently designing a polyphonic version, which is proving a lot more
work than I first thought. I would hope that I can get it at least starting
to be built before march2003, and hopefully some sounds from it by
June/July2003.

Some interesting facts, the PPG wave holds only 127 waveforms, though those
of you with a calculator will work out that 32 tables with 64 waveforms per
table is a lot more than 127, 2048 in fact.

The tables are generated when you select a table. Eneter a table number and
the CPU quickly calculates the data for the table. You can notice on the PPG
Wave as the sound stops for about 1 second whilst it calculates and
repopulates the wavetable RAM.

Paul

----- Original Message -----
From: "Neil Johnson" <nej22 at hermes.cam.ac.uk>
To: <Christian.Bergmiller at daimlerchrysler.com>
Cc: <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, December 17, 2002 10:04 AM
Subject: Re: [sdiy] ppg waves


> Christian,
>
> Have you checked out Paul Maddox's PPG pages:
>
> PPG webpages
>    Http://www.PPG.synth.net/
>
> Neil
>
> --
> Neil Johnson :: Computer Laboratory :: University of Cambridge ::
> http://www.njohnson.co.uk          http://www.cl.cam.ac.uk/~nej22
> ----  IEE Cambridge Branch: http://www.iee-cambridge.org.uk  ----

----- Original Message -----
From: <Christian.Bergmiller at daimlerchrysler.com>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, December 17, 2002 9:32 AM
Subject: [sdiy] ppg waves


> Hello List...
>
>
> I would like to experiment with the ppg waves and some avr controllers -
> building a midi controlled wavetable oscillator.
>
> Searching the archive/internet was not very sucessfull :-(
> ( I just noticed this topic was requested and discussed bevore...)
>
> If somebody would be kind enough to send me an image file of the ppg wave
> eprom(s) this would be great.
>
> Christian
>