Waldorf PPG Wave 2.V, Руководство по эксплуатации

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PPG Wave 2.V
Waldorf 4 Operation Manual
Waldorf PPG Wave 2.V Software Synthesizer
Introduction
Thank you for your purchase of the Waldorf PPG Wave 2.V software synthesizer. The
PPG Wave 2.V is the software version of the legendary PPG Wave 2.3 synthesizer,
which was released in 1983. The PPG Wave 2.V combines the unique Wavetable
synthesis sound of the original synthesizer with the advantages of a software Plug-In. In
the end of 1970, the German company PPG came up with the idea, to copy the sound
and behaviour of analog circuits and replace it with a digital representation of oscillator
waveforms. In this process, different successive waveforms were stored in Wavetables.
While passing through, the sound changed its character, which could be controlled by
using envelopes, LFOs or other control sources. This resulted in a sound which
continuously changed its character and enabled soft transitions between similar soun-
ding waveforms or extreme jumps between totally different sound spectra. With their
additional subsequent analog filters, the PPG synthesizers quickly reach cult status and
their typical “Wave sound” could be heard on a great number of music productions of
their time. We at Waldorf have successfully on-developed Wavetable synthesis for
many years. But there are still many fans of the initial powerful PPG sound around.
How near is the PPG Wave 2.V to the Original?
To give you a simple answer: very near! An example: the filter in the original PPG was
a SSM 2044 chip. If the resonance was increased, this filter attenuated the input signal
by up to 12dB. The PPG Wave 2.V works exactly like that. Furthermore, the resonance
of the SSM 2044 had a very special character, which in this form is not implemented in
any other filter circuit or IC. If you have the chance to listen to and directly compare
both the original and the Plug-In, you will find, that the resonance (or Emphasis, as it’s
called in the PPG) of both sounds absolutely identical. Another characteristic of the ori-
ginal PPG was its Aliasing noise – actually a side-effect during the reproduction of di-
gital signals – which added an originally undesired noise level to the sound. Actually, it
is very simple to create Aliasing. But creating a type of Aliasing that has the same beha-
viour as on the PPG, is a challenge. In the PPG Wave 2.V you can even choose,
whether you want Aliasing or not. The only thing, that we did not emulate, was the
hum noise of the display back-lighting. We assume, that nobody really wants to use this
“feature”. There are many more factors, that are responsible for the typical PPG sound
and we are proud to say that we have found them all and reproduced them in our Wa-
ve 2.V.