Editing 40d:Noise

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Certain jobs generate '''noise''' which disturbs nearby sleeping dwarves.  Depending on a job's noise level and proximity, your dwarves could sleep "uneasily due to noise", "very uneasily due to noise", or be woken up by noise.  These events will produce unhappy [[thought]]s in varying degrees.

Neither walls nor doors will insulate dwarves from noise. Distance and how loud a job is are the only factors determining whether a dwarf's sleep will be disturbed.  

Noise is produced when a noisy job is completed.  Thoughts about noise do not appear until the sleeping dwarf has woken up.

Dwarves walking through a sleeping dwarf's room (even over his head) will not cause noise, which is important for [[bedroom design]].

Contrary to common belief based on [[23a:Noise|earlier versions]], workshops do ''not'' currently produce any noise.

Due to a bug, dwarves only remember the last noise that they heard, so a sleeping dwarf exposed to a very loud noise followed by a quiet noise will only complain about having slept "uneasily due to noise".

==Noisiness of various jobs==
Unlike in the past, only 5 jobs are known to cause noise:
* Digging - 8 tiles
* Wood cutting - 8 tiles
* Engraving - 4 tiles
* Fortification carving - 4 tiles
* Removing [[construction]]s - 8 tiles

====Visualization====

Noise radiates across [[z-level]]s in the shape of a cube, in all 6 directions (north/south, east/west, ''and'' up/down), so noise that travels 4 tiles will generate noise in a 9x9 pattern on 9 successive floors.  The noise radiates from the center of the noise-producing apparatus and reduces in intensity as it does so (within 25% of the range will awaken the dwarf, within 50% will be "very uneasily", and the rest will just be "uneasily").

   Level 0      Level &plusmn; 1     Level &plusmn; 2     Level &plusmn; 3     Level &plusmn; 4     Level &plusmn; 5
 
 ...........   ...........   ...........   ...........   ...........   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .****'''N'''****.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 .*********.   .*********.   .*********.   .*********.   .*********.   ...........
 ...........   ...........   ...........   ...........   ...........   ...........
 
 '''N''' = Origin of noise
 * = Noise
 . = No noise

== Noise in practice ==
* Don't dig near bedrooms when there are dwarves sleeping in them.
* Smooth your bedrooms before placing the actual furniture.

== Designing in anticipation of noise ==
* A good way to start is to put all your bedrooms on level -9 or lower, so you don't have worry about noise from [[wood cutting]].
* Remember that [[jail]]s, [[hospital]]s, and sleeping [[barracks]] should also ideally be kept away from noise, in addition to standard and noble bedrooms.

Facilities that ''can'' be safely built around or above/below bedrooms and other sleeping facilities, to separate the area set aside for the "quiet zone", include anything that does ''not'' make noise.

* What I generally do is make my bedrooms 4x1 and have them stick out the sides of my fortress away from the Trade Depot.  If you put the bed at the end of the bedroom, you should have no problems with workshop noise, assuming you don't expand over or under the bedrooms.

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