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.

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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