Range: 1 - 4, for different types of noises (see special_wielded() in
   it_use3.cc); 0 for none.

   Range: 0 or 1.

        0, 3, 0, 0, 0,          // noise

        0, 1, 0, 0, 0,          // noise

speak.txt handles messages for monsters communicating.

speak.txt handles messages for monsters communicating, and 
also the messages for weapon noises.

  For obvious reasons, weapon noises get by without any such
  prefixes, and the only hardcoded keywords are 
  "noisy weapon" for weapons with the noises property, and 
  "singing sword" for (who'd have guessed?) the Singing 
  Sword.

Note that this does not work for weapon noises. Here only 
the first part of a paragraph before a carriage return is 
parsed.

  For weapon noises only a subset of the above is relevant,
  as anything including VISUAL and the channel keys SPELL 
  and ENCHANT are considered invalid and will trigger a 
  default message instead. Again, the default channel is 
  MSGCH_TALK.

Weapon noises are handled differently in that all of the 
above replacements don't hold. Instead you can use 
@The_weapon@, @the_weapon@, @Your_weapon@, @your_weapon@ and
@weapon@ which will get replaced by "The (weapon name)", 
"the (weapon name)", "Your (weapon name)", "your (weapon 
name)" and the plain weapon name, respectively. Note that 
the Singing Sword, being unique, cannot be referred to by 
the possessive variants, so they will be replaced with one 
of the definite article ones.

Weapon noises also use a number of synonyms which are 
defined at the end of speak.txt.

The Singing Sword and all other hardcoded artefacts can be 
created with '&|'. The Elemental Staff and the spear of 
Voo-Doo are examples of noisy weapons.

missiles shot with a launcher. Since darts and stones can be thrown
without launchers to good effect, their skills crosstrain:

missiles shot with a launcher. Since stones can be thrown without 
launchers to good effect, these skills crosstrain:

     o Throwing and Darts