Mercurial > hg > aimmat
annotate aim-mat/tools/@signal/modtuningtilt.m @ 4:537f939baef0 tip
various bug fixes and changed copyright message
author | Stefan Bleeck <bleeck@gmail.com> |
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date | Tue, 16 Aug 2011 14:37:17 +0100 |
parents | 20ada0af3d7d |
children |
rev | line source |
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tomwalters@0 | 1 % method of class @signal |
tomwalters@0 | 2 % |
tomwalters@0 | 3 % INPUT VALUES: |
tomwalters@0 | 4 % |
tomwalters@0 | 5 % RETURN VALUE: |
tomwalters@0 | 6 % |
tomwalters@0 | 7 % |
bleeck@3 | 8 % This external file is included as part of the 'aim-mat' distribution package |
bleeck@3 | 9 % (c) 2011, University of Southampton |
bleeck@3 | 10 % Maintained by Stefan Bleeck (bleeck@gmail.com) |
bleeck@3 | 11 % download of current version is on the soundsoftware site: |
bleeck@3 | 12 % http://code.soundsoftware.ac.uk/projects/aimmat |
bleeck@3 | 13 % documentation and everything is on http://www.acousticscale.org |
tomwalters@0 | 14 |
tomwalters@0 | 15 function sig=modtuningtilt(sig) |
tomwalters@0 | 16 |
tomwalters@0 | 17 sig=antitilt(sig,0.04); % mache die Neigung rückgängig |
tomwalters@0 | 18 |
tomwalters@0 | 19 |
tomwalters@0 | 20 sig=tilt(sig,0.08); % tilte, aber etwas weniger |
tomwalters@0 | 21 |
tomwalters@0 | 22 |
tomwalters@0 | 23 |
tomwalters@0 | 24 vals=sig.werte; |
tomwalters@0 | 25 |
tomwalters@0 | 26 |
tomwalters@0 | 27 cutoff=500; % Hz |
tomwalters@0 | 28 drop=0.002; % Falle bis auf Null in 2 ms |
tomwalters@0 | 29 durationtotilt=1/cutoff; |
tomwalters@0 | 30 |
tomwalters@0 | 31 tiltstart=time2bin(sig,-durationtotilt); % Hier gehts los |
tomwalters@0 | 32 tiltend=time2bin(sig,-durationtotilt+drop); % und hier hörts schon wieder auf |
tomwalters@0 | 33 tiltnr=tiltend-tiltstart; |
tomwalters@0 | 34 ti=linspace(1,0,tiltnr); |
tomwalters@0 | 35 |
tomwalters@0 | 36 vals(tiltstart+1:tiltend)=vals(tiltstart+1:tiltend).*ti(:); |
tomwalters@0 | 37 vals(tiltend:end)=0; |
tomwalters@0 | 38 % figure |
tomwalters@0 | 39 % subplot(2,1,1) |
tomwalters@0 | 40 % plot(sig); |
tomwalters@0 | 41 sig.werte=vals; |
tomwalters@0 | 42 % subplot(2,1,2) |
tomwalters@0 | 43 % plot(sig); |
tomwalters@0 | 44 |