All symbols starting with `i' in src/od-dos/sound

• if src/od-dos/sound/gus.c:344
• init_sound src/od-dos/sound/sound.c:241
• interpol_freq src/od-dos/sound/sound.c:60
• INTERPOL_SIZE src/od-dos/sound/sound.c:56
• IRQ_Detected src/od-dos/sound/sb.c:105
• IsPlaying src/od-dos/sound/sb.h:22