[di-ze]

A keyboard is not a synthesizer itself, but it can be used to control a synthesizer. A synthesizer is an electronic instrument that generates sound through the manipulation of various factors such as frequency, phase, and envelope. It often includes a keyboard as a means of input, but it can also be controlled by other means like MIDI controllers or even your computer. The keyboard keys send note and velocity data to the synthesizer, which then creates the sound. So, while a keyboard is often part of a synthesizer, it is not the synthesizer itself.