From df04572d60ff8402bf42fa47c90bf7452f9428f0 Mon Sep 17 00:00:00 2001 From: Kevin Larke Date: Mon, 29 Sep 2014 11:56:15 -0700 Subject: [PATCH] doc/notes.txt : Updates from session notes. --- doc/notes.txt | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/doc/notes.txt b/doc/notes.txt index 2723df5..c825251 100644 --- a/doc/notes.txt +++ b/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.