Most of (but not all) chip vowel-chime are synthesised by simply dividing a clock square heave to get a square wave of desired frequency, and sometimes using a Sound Chips sawtooth/triangle wave from volume LFO or an (ADSR) envelope to get some benevolent of ring modulation. LFOs are used to control or influence a sane description such as pitch or filters in a repeating cycle.
Modern computers can performance a incongruity of chiptune formats through the capitalization of emulators and platform-specific plugins for media players. Depending on the nature of hardware being emulated, 100% accuracy in software may not be available. The commonly dedicated MOS Technology SID chip, for example, dead duck a multi-mode drain including analog circuits whose characteristics are only mathematically estimated in emulation libraries.