% script init_sound.m
% initializes microphone input for script sound_in.m
% only need to run once per session
% used in URI's EGR106 
% 
% parameters:
Fs = 10000; % sampling rate
N  = 10000; % number of samples recorded
%
ai = analoginput('winsound');			
addchannel(ai, 1);				
set(ai, 'SampleRate', Fs);
set(ai, 'TriggerType', 'software');
set(ai, 'TriggerRepeat', 0);
set(ai, 'TriggerCondition', 'Rising');
set(ai, 'TriggerConditionValue', 0.2);          % could increase for noise immunity
set(ai, 'TriggerChannel', ai.Channel(1));
set(ai, 'TriggerDelay', -0.1);                  % could start later
set(ai, 'TriggerDelayUnits', 'seconds');
set(ai, 'SamplesPerTrigger', N);             
set(ai, 'TimeOut', 10);