doc/notes.txt : Updates from session notes.

doc/notes.txt

@@ -12,6 +12,31 @@ SPAT LAB SETUP:
     a. TotalMix - select 'DTS_24ch'
     b. mixer: Recall preset 96 ('24ch firecac ufx')
 
+Session Notes: 9/28/14
+1) Problems with feedback were mitigated by brining down the input gain.
+   In generate the input/output gain were set to:
+      In Gain:  0.7 0.2
+      Out Gain: 2.0 2.0
+2) Turning the piano away from the microphones also reduced feedback; probably
+   due to the fact that the piano lid sheilds the mic's from direct path
+   from the speakers.
+3) Increasing the threshold and and use of mode 4 (Bump Mode) produced the
+   best transformations.  See Preset G in mod_44_45.js
+4) Input signal conditioning needs to be added to keep the piano signal 
+   in the effective range of the transform.
+5) The Sine Tracking feedback controller is in an uncertain state.
+    a. The attenThresh setting range needs to be verified.
+    b. The scoring function was changed and then not verified.
+    c. The algorithm which compares the trajectory of a given harmonic
+    to the trajectory of the overall sound needs to be writen.  
+    Harmonics that are increasing relative the overall envelope
+    should be attenuated.
+6) A noise gate might help the reberberation feedback problem (i.e.
+   the dense wash of sound with tends to build with time)
+7) The transform algorithm needs to be developed further to increase
+   it's reliability and range of effect.
+8) Changing window length from the score didn't seem to be working.
+
 Session Notes: 8/24/14
 0) Investigate using omni mic. in front of speakers to feed input to cmFrqTrk.
 1) Feedback from Mark 178, m144, Preset C.