Source to src/i_sound.h

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#ifndef __SOUND__
#define __SOUND__

#define SND_TICRATE             140             // tic rate for updating sound
#define SND_MAXSONGS    40              // max number of songs in game
#define SND_SAMPLERATE  11025   // sample rate of sound effects

typedef enum
{
  snd_none,
  snd_PC,
  snd_Adlib,
  snd_SB,
  snd_PAS,
  snd_GUS,
  snd_MPU,
  snd_MPU2,
  snd_MPU3,
  snd_AWE,
  NUM_SCARDS
} cardenum_t;

#endif