How to play beep before each trial
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I have 80 audio files and I want to play beep before each audio starts as a cue.
Should I add "Beeper(400, [0.3], [0.5]);" in the loop, or outside of the loop?
for i=1:length(audio_files)
aud_file=strcat('C:\toolbox\aud_file\',audio_files(i).name);
% load sound file (make sure that it is in the same folder as this script)
[soundData freq]=audioread(aud_file);
% opens sound buffer at a different frequency
pahandle = PsychPortAudio('Open', [], [], 2, []);
% loads data into buffer
PsychPortAudio('FillBuffer', pahandle, soundData');
% how many repititions of the sound
repetitions=1;
%starts sound immediatley
PsychPortAudio('Start', pahandle, repetitions,0);
% stop
PsychPortAudio('Stop', pahandle, 1,0);
%wait
WaitSecs(3);
%close
PsychPortAudio('Close', pahandle);
end
5 Kommentare
Walter Roberson
am 11 Sep. 2019
% opens sound buffer at a different frequency
pabhandle = PsychPortAudio('Open', [], [], 2, []);
% generate a beep
beepWaveform = MakeBeep(1000,.250,44100);
% make stereo
beepWaveform = repmat(beepWaveform, 2, 1);
% fill buffer
PsychPortAudio('FillBuffer', pabhandle, beepWaveform);
% how many repititions of the sound
repetitions=1;
%randomaize
a=randperm(3);
for i=1:length(audio_files)
aud_file=strcat('C:\toolbox\aud_file\',audio_files(a(i)).name);
% load sound file (make sure that it is in the same folder as this script)
[soundData freq]=audioread(aud_file);
% opens sound buffer at a different frequency
pahandle = PsychPortAudio('Open', [], [], 2, []);
% loads data into buffer
PsychPortAudio('FillBuffer', pahandle, soundData');
%starts beep sound immediatley
PsychPortAudio('Start', pabhandle, repetitions,0);
% stop beep
WaitSecs(1);
PsychPortAudio('Stop', pabhandle, 1,0);
% how many repititions of the sound
repetitions=1;
%starts sound immediatley
PsychPortAudio('Start', pahandle, repetitions,0);
% stop
PsychPortAudio('Stop', pahandle, 1,0);
%wait
WaitSecs(1);
%close
PsychPortAudio('Close', pahandle);
end
%close beep
PsychPortAudio('Close', pabhandle);
Antworten (0)
Siehe auch
Kategorien
Mehr zu Audio and Video Data finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!