| Description |
| PATCH |
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| In analogue synthesis,a particular sound setting crested by interconnecting mdules such as oscillators,filters and envelope shapers via cables or a miniature patch bay.The term persists to this day,despite the fact that modern digitally-controlled synthesizers don't require any patching at all,a bad thing some would argue,since internal patching cuts down your sound-creating options. |
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| PCM |
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| Pulse Code Modulation.A form of sampling often used in inexpensive drum machines,and in home keyboards.It uses serial rather than more expensive parallel data storage,which means that the sampled sounds cannot be transposed to different pitches. |
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| PD |
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| Casio's response to Yamaha's FM sound creation technique,Phase Distortion was launched in the popular budget CZ-101 keyboard,and adopted for the CZ1/1000/5000/230S and several others.PD uses two digital oscillators,each of which has eight available waveforms.The DCO,DCW(a form of filter)and DCA each have eight-stage envelopes,and the two DCO's can be combined through a ring modulator for complex harmonic effects.Though PD sounds can be quite complex,it's difficult to make them sound really |
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| pd - continuation |
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| powerful unless you use doubling effects.Perhaps acknowledging this,Casio has now superceded PD by introducing an even more FM-like system,IPD(Interactive Phase Distortion),in the VZ1 synth. |
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