Function player_can_hear

crawl-ref/source/player.cc:1156–1161

}

bool player_can_hear(const coord_def& p, int hear_distance)
{
    return !silenced(p)
           && !silenced(you.pos())
           && you.pos().distance_from(p) <= hear_distance;
}

int get_teleportitis_level()
{