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PPG | Waveterm A


The WAVE TERM is the central component of the PPG Music Computer System. It allows the musician to create not only compositions but also his own sounds, both being creatively assisted by use of the monitor screen. A printer can be connected up the WAVE TERM providing readouts of all monitor screen information including complete EVENT tables of compositions. Thus all the entered data can be recorded on paper and checked. 

The PPG WAVE TERM has a video monitor with graphics and an Audio Signal Processor for recording natural sounds (sampling). All data can be stored on to floppy disc. The WAVE TERM has two drives, one for the System Diskette and one for the User Diskette.

Control of the WAVE TERM is carried out using 10 programmed softkeys and 10 numerical keys. The function of every softkey can be immediatly recognised by illuminated words on the monitor screen.

The WAVE TERM's various functions

1. Recording sounds and/or combining and modulating them.
2. Recording compositions (Sequences) and modulating them.
3. combining the System Components and
4. storing and recalling data.

You can record 8 bit sounds (musical instruments, human voice, animal noises, sound effects) and then modulate them using various kinds of manipulation (playing them backwards, combining them directly together or with one sound after the other). Adjustment of the natural sounds is done with the pots on the WAVE 2.3/2.2 using the envelopes or tuning etc. The sounds can be extended using LOOPS, and a sound analysis (harmonic content) for possible synthetic imitation can be carried out at any point of the waveform. The WAVE TERM can also be used to load 12 bit natural sounds into the WAVE 2.3 or EVU. These 12 bit sounds are supplied by PPG on a special diskette. They can also be modulated using the WAVE 2.3 pots. The modulation of the 12 bit sounds can be stored without erasing the original sounds.

Synthetic sounds can be created with Waveforms built by entering harmonics in a table. These Waveforms can be then combined into Wavetables and the computer will calculate the intermediary values. The Waveforms and Wavetables can be loaded into the WAVE 2.3/2.2 or into the EVU.

In addition Resonator Curves can be drawn which can modulate the Wavetables (resonator effect) or control the loudness of natural sounds (eg: tremolo, crescendo etc). Composers often find the EVENT Generator the most interesting aspect of the WAVE TERM. Using the WAVE TERM monitor screen 8 Voices of a composition can be simultaneously worked on, that is independent of the program up to 8 Voices will sound simultaneously.

8 bit Sampling for the WAVE 2.2, 8 inch floppy disk drive, creation of Wavetables and sequencer on board, storage of patches onto disk.

ModelWaveterm A
Engine TypeDigital
EngineWT, Sample
Voices (max)8
Engine DetailedWT
Sampler8 bit, Gated, Loop, One Shot (Phrase)
Key typeN/A
Produced:1982 - 1984
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

Manuals, patches etc.


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