The result is sometimes audible as a click or pop at the beginning and/or end of the sample. As a result, many end-user created sound tools for Doom engine games do not properly pad the samples when converting to this format. Note that the fact that the sample is padded was a largely unknown fact prior to work undertaken during the Chocolate Strife project, and was only obtained by reverse engineering portions of the DMX library. Sample rate (usually, but not necessarily, 11025)ġ6 pad bytes, immediately following samples Sound lumps in the WAD file are stored in the DMX format which consists of a short header followed by raw 8-bit, monaural ( PCM) unsigned data, typically at a sampling rate of 11025 Hz, although some sounds use 22050 Hz. Because Id Software did not own this sound library, the original DOS source code could not be distributed freely, and the sound system had to be removed first.
The sound support for the Doom engine was programmed by Paul Radek. Many of Doom's sounds are from Sound Ideas' General series sound effects library. The sounds in Doom and Doom II were compiled by Bobby Prince, and in Heretic and Hexen compiled by Kevin Schilder.
