Split the channels using 'From Multimedia File'

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Hamda Zarrouk 2023-2-9

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https://ww2.mathworks.cn/matlabcentral/answers/1909575-split-the-channels-using-from-multimedia-file

评论： Hamda Zarrouk 2023-2-10

Hello, I have a problem, where I need to seperate a stereo signal into two monos each with a size of 1024. Here I used 'From Multimedia File' and 'Multiport selector'. It can also basically be considered a 1024*2 matrix. Now the problem that have is dispaying the seperate sinals in each scope. I get this warning and even after waiting a lot the signal is not right. what sould i do and what settings have to be set right ? Thank you.

The next step is to use a speaker and a mic from Simulink and to split the channels as done to this audio file. If there are suggestions please tell me.

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Answer 1

jibrahim 2023-2-9

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Hi Hamda,

The scope has an 'Input processing' parameter. You probably have it set as:

Elements as channels (sample based) - Process each element as a unique sample.

You want to set it to this instead:

Columns as channels (frame based) - Process signal values in a channel as a group of values from multiple time intervals. Frame-based processing is available only with discrete input signals.

then you will get a single plot corresponding to the entire 1024 samples

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Hamda Zarrouk 2023-2-10

Thank you it worked

Hamda Zarrouk 2023-2-10

I have a follow up question. Now i changed the system a bit so that the sound file isn't directly splitted, but rather first emiited through a speaker, picked up by a microphone and then splitted into two channels. Here in each 'Multiport selector' I specified a a column. Would this system work ?