SHM-CD

SHM-CDs (short for Super High Material Compact Disc) is a variant of the Compact Disc, which replaces the Polycarbonate base with a proprietary material. This material was created during joint research by Universal Music Japan and JVC into manufacturing high-clarity Liquid-crystal displays.

SHM-CDs are fully compatible with all CD players, since the difference in light refraction is not detected as an error. JVC claims that the greater fluidity and clarity of the material used for SHM-CDs results in a higher reading accuracy and improved sound quality. However, since the CD-Audio format contains inherent error correction, it is not known whether the difference in read errors is great enough to be audibly different.