.SMP

From REWiki

These files, usually named english.smp or german.smp, contain audio sample data. Its content is referenced by offset from the corresponding .IDX files.

Contents 1 Sample entry format 2 Sample format 2.1 Discworld 1 2.2 Discworld 2 2.3 Discworld Noir

Sample entry format

After seeking to the required offset, an entry of the following format can be extracted.

#ifdef DW2
uint32 unknown1;
#endif
uint32 length;
uint8 sample_data[length];

Sample format

Discworld 1

• the sample data is in raw format

Sample Size    : 8-bits
Sample Encoding: unsigned
Channels       : 1
Sample Rate    : 22050

Discworld 2

• unknown, doesn't seem to be in raw format
• data has a size which is a multiple of 25 bytes (strange...)

Discworld Noir

• MPEG ADTS, layer II, v1, 56 kBits, 44.1 kHz, Monaural