Roland Sound Canvas
Roland/Edirol Sound Canvas lineup is a series of General MIDI (GM) based pulse-code modulation (PCM) sound modules and sound cards, primarily intended for computer music usage, created by Japanese manufacturer Roland Corporation. Some models include a serial or USB connection, to a personal computer. Products. Sound Canvas. In some cases also sold as "Edirol" rather than "Roland" as the brand name. Sound Canvas and Keyboard. The following combine a sound canvas module with a built in MIDI keyboard Edirol. Roland sold GM/GS products under its Edirol brand. The samples contained in the ROMs of  these units do not in all cases mirror the original SC-7 / SC-55 GM/GS samples. GM2 is downward compatible with GM. The SD line was also sold under the "Roland" brand. Virtual Sound Canvas. There is also the VSC, Virtual Sound Canvas, range of PC software which provide GM and GS synthesis on Windows PCs. Many versions of Cakewalk's Sonar software came bundled with a copy of VSC, though from Sonar 4 onwards they ship with the improved TTS-1 softsynth, which Roland has sold previously through its Edirol subsidiary as the HyperCanvas.