Added technical details and overview

grains.rst

@@ -15,9 +15,6 @@ We are sounds in the universe
 * Dragica Kahlina (@gluggergames)
 * Jens-Christian Fischer (@jcfischer)
 
-.. note::
-
-   do we have notes?
 
 ----
 
@@ -59,22 +56,21 @@ What & Why
 How far can we take the *Web Programming*, *Synthesis* and *Free
 Improvisation*
 
+*Feedback* between performer and audience is key to a musical
+performance. What happens when we enable (a certain amount of)
+*control* by the audience?
 
 ----
 
-Our Backgrounds
-===============
-
-* Theoretical Physics
-* Software Development
-* Game & Sound Design
-* Cloud Architecture / Operations
-* Free Improvisation
+What can we do with "run of the mill" technology?
+=================================================
 
-----
+Constraints:
+------------
 
-What can we do with "run of the mill" technology?
--------------------------------------------------
+* No specific network technologies
+* No specific networking hardware
+* No low level networking software
 
 
 ----
@@ -170,13 +166,10 @@ Freeware
 ----
 
 Experimental Setup
-------------------
-
-
-----
+==================
 
 Ingredients
-===========
+-----------
 
 * Elixir_ / Phoenix_ / Erlang_ VM
 * WebSockets_
@@ -197,6 +190,65 @@ Ingredients
 
 ----
 
+Overview
+========
+
+
+.. image:: img/overview.png
+
+
+----
+
+Server
+======
+
+* Ubuntu Server running on SWITCHengines in Zurich
+* Elixir / Phoenix software
+* Receiving data from mobile clients (30 msgs / second / client) via WebSockets
+* Keeping state
+* Sending data to Laptop on Stage
+
+----
+
+Visualisation Client
+--------------------
+
+* JavaScript receives position data from server
+* Calculates visualisation (flocking behaviour) with Processing
+* Generates OpenSoundControl (OSC) messages, sends them via Websocket
+* Node.js Program translates OSC messages from Websocket to UDP
+* CSound Software listens to OSC messages and generates grains
+* Audio is sent via USB to Sound Laptop
+
+----
+
+Sound Laptop
+------------
+
+* Various MIDI Controllers connected
+* MainStage software creates virtual mixing desk
+* Software Synths / Digital Effects
+* Mixes Audio from CSound with Effects
+* Sends Audio to Conference Hall PA
+
+
+----
+
+iPad Pro
+--------
+
+* Played by Dragica in Lucerne, Switzerland who (hopefully) sees &
+  hears what we are doing here
+* Runs various musical software
+* Sound via Video-Conference, patched to Conference Hall PA
+
+----
+
+What could possibly go wrong?
+=============================
+
+----
+
 Audience Participation
 ======================