The DLS Level 1 Specification (DLS1) describes the minimal synthesis architecture and feature set needed for a device to be capable of playing DLS1 format sound samples. DLS Level 1 was is aimed squarely at wavetable PC audio devices in use around 1999. Later levels (DLS-2, etc.) added support for enhanced performance and additional features.
» VERSION 1.1, January 1999 - The following changes and additions were made:
» VERSION 1.1b, September 2004 - This is just an editorial change, correcting a misstatement regarding resetting of Expression (CC11) on reception of the Reset All Controllers message. Expression should be reset.
DLS version 2
The DLS Level 2 Specification (DLS-2) extended DLS to be in-line with advances in the state of the art in multimedia computing. The specification was the result of collaboration between numerous hardware and software manufacturers represented by the MMA, as well as input from other organizations intending to use the format, such as MPEG (IEC/ISO JTC-1 SC-29 WG-11).
The Mobile DLS Specification defines a wavetable instrument representation format optimized for use in mobile applications. Mobile DLS is intended for use with Mobile XMF file for a complete musical performance.