Additive synthesis
Casiotone 1000P is an 8-polyphonic additive synthesizer.
The basic waveforms are made by adding several "Feet" like organs. There is no filter as such. Casiotone 1000P creates sounds by controlling the envelopes of each harmonics.
The editability is limited. Users can select the settings from below;
10 harmonics settings
How this synthesis engine actually works is not very clear. Advertisement and reviews at that time frequently use phrases like "It's almost a digital synthesizer," which makes ambiguous how much analog processes are involved.
There are 10 "Feet" types;
16' 8' 5+1/3' 4' 2'
Organ1 and Organ2 has the same harmonic contents, but sounds different. It seems that Casiotone 1000P can control the volume of each harmonics.
10 ADSR envelope patterns can be selected.
There are 10 "Modulation" types;
Wah and Wait works like a filter by delaying the attack time of the higher harmonics.
Attack Modulation adds percussions like Organs.
Treble and Bass work like EQ by boosting high/low harmonics.
Metallic sound omits the basic harmonics. It leaves higher harmonics and creates inharmonic content.
There are 4 "Effect" types;
Heavy vibrato adds 7th trill, and Sustain makes the release segment longer. The vibrato LFO is a single-trigger one, that is, works at once for all the keys played.
Casiotone 1000P can split the keyboard in two. Lower tone can be used for the arpeggiator. There's no layering.
The arpeggiator uses Up/Down pattern and user-programmable pattern. 16-step pattern can be programmed.
Casiotone 1000P seems to be the last and highest-end model of the first-generation Casiotone series. CASIO turned to other names since - MT, PT, CT, and later CTK series.
The number 1000 may be derived from the fact that Casiotone 1000P has 1000 sound variations. There may be implication of the highest-end in the number 1000, as is shown in the other high-end model, CTK-1000.
The letter P may stand for "Programmable" - as seen in CASIO's programmable calculator series at that time, FX-702P and others.
Casiotone 1000P
Deep Synthesis: Home3. 20. 2004