code for simultaneous sound recording and playing

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Narendra Barathwaj
Narendra Barathwaj on 30 Nov 2011
I have been using MATLAB for processing sound file. i used these two codes for reading sound file from mic. But in both codes i can only process or rather plot the sound file only after it completes recording.
rec1 = audiorecorder;
recordblocking(rec1, 15);
play(rec1);
and the second one is
AI = analoginput('winsound');
>> addchannel(AI, 1);
>>fs=11000
>> set (AI, 'SampleRate', fs)
>> t=10
>> set(AI, 'SamplesPerTrigger', t*fs);
>> start(AI);
>> data = getdata(AI);
but i need to plot the sound file while it is getting recorded. so someone please give me the modified code or some suggestion for that.

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Answers (2)

Walter Roberson
Walter Roberson on 30 Nov 2011
Reduce your SamplesPerTrigger and loop on the getdata()
Sean de Wolski
Sean de Wolski on 30 Nov 2011
I would highly recommend reading and browsing through some of the demos in the DAQ toolbox.
demo toolbox 'data acquisition'

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