As I understand it, there are digital and analogh synths. As well as virtual analogh. So they both create sound but what is the name of the synth where you work with a wave form and filter and manipulate it to create sounds. I cant see a separation in names between them and so called sampleback synths. This is the one where you have your usual traditional instruments such as piano and guitarr. I see it as the one i dont know the name of and the sampleback can use digital or analogh technology but are very different in their use.

Could someone please tell me the name I am looking for and give me examples of brands who produce the various types of equipment.

I know this is a very basic question but someone maybee fell for answering it.

Tanks