Mercurial > hg > aimmat
annotate aim-mat/modules/bmm/pzfc/DetectFun.m @ 4:537f939baef0 tip
various bug fixes and changed copyright message
| author | Stefan Bleeck <bleeck@gmail.com> |
|---|---|
| date | Tue, 16 Aug 2011 14:37:17 +0100 |
| parents | 74dedb26614d |
| children |
| rev | line source |
|---|---|
| tomwalters@0 | 1 function detect = DetectFun(velocity) |
| tomwalters@0 | 2 % function detect = DetectFun(velocity) |
| tomwalters@0 | 3 % a somewhat-compressing HWR. |
| tomwalters@0 | 4 |
| tomwalters@0 | 5 negate = 0; % depending on filterbank parameters, one or other might "thump" |
| tomwalters@0 | 6 if negate |
| tomwalters@0 | 7 velocity = -velocity; |
| tomwalters@0 | 8 end |
| tomwalters@0 | 9 |
| tomwalters@0 | 10 velocity(velocity < 0) = 0; |
| tomwalters@0 | 11 a = 0.25; % limiting slope, relative to 1 where it starts |
| tomwalters@0 | 12 detect = min(1, velocity); |
| tomwalters@0 | 13 detect = a*velocity + (1-a)*(detect - (detect.^3)/3); |
| tomwalters@0 | 14 |
| tomwalters@0 | 15 % test it this way: |
| tomwalters@0 | 16 %plot(-1:.1:2, DetectFun(-1:.1:2)) |