-
Notifications
You must be signed in to change notification settings - Fork 5
/
mpsy_match_main.m
185 lines (147 loc) · 6.42 KB
/
mpsy_match_main.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
% Usage: mpsy_match_main
% ----------------------------------------------------------------------
% This is the main script of psylab for matching experiments.
% It loops for a number of trials belonging to one
% experimental run.
% Test stimulus and reference stimulus are presented
% either randomly, or alway test first or always reference
% first. The subject answer is recorded and used to
% control a 1_up_1_down algorithm until threshold
% (determined by a certain number of reversals) is
% reached. This script should be called from the main
% experiment-script after all revelant psylab-variables
% have been set.
%
% input args: (none) works on set of global variables M.* and
% uses fixed signalname convention
% output args: (none) generates outputsignal, processes
% subjects' answer and protocolls everything
%
% Copyright (C) 2003-2006 Martin Hansen, FH OOW
% Author : Martin Hansen, <psylab AT jade-hs.de>
% Date : 24 Oct 2006
% Updated: <19 Mar 2009 08:38, martin>
% Updated: < 1 Nov 2006 21:31, hansen>
%% This file is part of PSYLAB, a collection of scripts for
%% designing and controlling interactive psychoacoustical listening
%% experiments.
%% This file is free software; you can redistribute it and/or modify
%% it under the terms of the GNU General Public License as published
%% by the Free Software Foundation; either version 2 of the License,
%% or (at your option) any later version. See the GNU General
%% Public License for more details: http://www.gnu.org/licenses/gpl
%% This file is distributed in the hope that it will be useful,
%% but WITHOUT ANY WARRANTY; without even the implied warranty of
%% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
if M.QUIT,
% we will get HERE in case the user requested a quit of the experiment
% at the beginning of a new run which isn't the very last of all runs.
mpsy_info(M.USE_GUI, afc_fb, '*** user-quit of this experiment ***', afc_info, '');
%disp('experiment was quit by user-request')
return
end
% clear previous run history, if any; set missing default values;
% open msound, if requested;
mpsy_init_run;
if M.VISUAL_INDICATOR,
warning(' M.VISUAL_INDICATOR has been set to 0.')
M.VISUAL_INDICATOR = 0;
disp('*** info: The VISUAL_INDICATOR feature is not yet supported for matching experiments, ')
disp('*** info: as it does not make sense in most cases.');
end
% run the "set-script" once. this should set some variables and/or
% signals to constant values or to start values (among them are, at
% least, M.VAR and M.STEP)
eval([M.EXPNAME 'set']);
% check a number of variables for correct content/type,
% also check for pre/post/quiet signals
mpsy_check;
if M.INFO,
stmp = sprintf('This run: Parameter (%s): %g %s', ...
char(M.PARAMNAME(1)), M.PARAM(1), char(M.PARAMUNIT(1)));
for k=2:M.NUM_PARAMS,
stmp = [stmp sprintf(',\n Par.%d (%s): %g %s', ...
k, char(M.PARAMNAME(k)), M.PARAM(k), char(M.PARAMUNIT(k)))];
end
mpsy_info(M.USE_GUI, afc_info, stmp);
end
M.ALLOWED_USER_ANSWERS=[];
M.UD = mpsy_get_useranswer(M, 'Are you ready for this run? To continue, hit RET', afc_fb);
% check user answer for a possible quit-request
if M.UD == 9, M.QUIT = 1; end
if M.UD >= 8, return; end
pause(0.5);
% ------------------------------------------------
% ----- start the loop of trials for one run -----
% ------------------------------------------------
while (M.REVERSAL < M.MAXREVERSAL) | (M.STEP > M.MINSTEP)
% New values for M.VAR and M.STEP have been calculated based on
% the adaptive rule in use; except for the very first run.
% Generate new signals by use of the "user-script"
eval([M.EXPNAME 'user']);
% Save the new values of M.VAR and M.STEP in the array of all of
% their values during the current run.
% This order (FIRST call the user script, THEN save the two
% variables) is needed to reflect changes of M.VAR, that are possibly
% made by the user script. For example, the user script might
% limit M.VAR to within certain boundaries, e.g., to prevent
% amplitude clipping, overmodulation, negative increments, etc.
M.VARS = [M.VARS M.VAR];
M.STEPS = [M.STEPS M.STEP];
% Mount intervals in matching experiment fashion, present them,
% obtain and process user answer.
mpsy_match_present;
% check user answer for a possible quit-request
if M.UD>=8, return; end
if M.FEEDBACK,
mpsy_info(M.USE_GUI, afc_fb, feedback);
pause(1);
end
% append the current answer to the array of all answers
M.ANSWERS = [M.ANSWERS M.ACT_ANSWER];
% now apply adaptive N-up M-down rule:
% it adapts stimulus variable M.VAR, recalculates step size M.STEP, etc.
eval( ['mpsy_adapt_' M.ADAPT_METHOD] )
% check whether familiarization phase has ended and data
% collection starts during measurement phase:
% note: a new M.STEP and M.VAR have just been calculated from the last answer
if M.STEP == M.MINSTEP & M.STEPS(end) ~= M.MINSTEP,
% count reversals during measurement phase again starting from 0
M.REVERSAL = 0;
if M.FEEDBACK,
mpsy_info(M.USE_GUI, afc_fb, 'starting measurement phase');
pause(1)
end
end
if M.DEBUG>1,
htmp = gcf; % remember current figure
% show last stimuli and answers
figure(111); mpsy_plot_feedback;
if M.DEBUG > 2,
figure(112); plot((1:length(m_outsig))/M.FS, m_outsig);
title('stimuli of PREVIOUS run')
xlabel('time [s]'); ylabel('amplitude');
end
if M.USE_GUI,
figure(htmp); % make previous figure current again, e.g. the answer GUI
end
end
end % while REVERSAL loop
% ---------------------------------------------
% ----- end of loop of trials for one run -----
% ---------------------------------------------
%% save the new VAR and STEP which WOULD have been used next
M.VARS = [M.VARS M.VAR];
M.STEPS = [M.STEPS M.STEP];
% protocol everything
mpsy_proto_adapt;
if M.FEEDBACK, figure(111); mpsy_plot_feedback; end
mpsy_info(M.USE_GUI, afc_fb, '*** run completed ***');
pause(3);
if M.USE_MSOUND,
msound('close');
end
% End of file: mpsy_match_main.m
% Local Variables:
% time-stamp-pattern: "40/Updated: <%2d %3b %:y %02H:%02M, %u>"
% End: