Editing DualDisc (section)

===Audio types===
The CD side of a DualDisc contained standard 16-bit [[LPCM]] audio sampled at 44.1&nbsp;kHz.  On the DVD side, most record companies (with the notable exception of [[Sony Music]]: see below) provided the album's music in both high-resolution, 24-bit [[DVD-Audio]] (typically at a sample rate of 96 or 192&nbsp;kHz for stereo and 48 or 96&nbsp;kHz for surround sound)  and lower-resolution, 16-bit [[Dolby Digital]] sound (typically sampled at 48&nbsp;kHz). This was done to allow consumers with DVD-Audio players access to very high-resolution stereophonic and/or surround sound versions of the album, while also providing the lower-resolution Dolby Digital stereophonic and/or surround sound which is compatible with any DVD player.

====Sony====
Because Sony had an existing high-resolution audio format, [[Super Audio CD|SACD]], in the marketplace which directly competes with DVD-Audio (see next section), [[Sony Music]], as a general rule, only provided 16-bit, 48&nbsp;kHz sampled LPCM stereophonic (and sometimes [[Dolby Digital|Dolby Digital Surround]]) sound on the DVD side of their DualDiscs.  The sound was compatible with any DVD player; however, it does not provide the higher fidelity and resolution of 24-bit, high sample-rate [[DVD-Audio]].

In addition, several [[SonyBMG]] titles whose regular editions include copy protection programs (such as [[Extended Copy Protection|XCP]] and [[SunnComm]]) did not feature the software on the DualDisc versions.