Sound visualisation using Generic led in simulink

Question

Mike 2013-3-30

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https://ww2.mathworks.cn/matlabcentral/answers/69180-sound-visualisation-using-generic-led-in-simulink

评论： Zishan Quadri 2018-9-16

I am working on a project to visualize music in simulink. I'm trying to recreate the schematic presented in this video.

I use : #1 From multimedia file to open .wave audio file #2 lowpass filter #3 idealized 8bit ADC #4 Convert 2D to 1D #5 Delay line #6 Unbuffer #7 Generic LED

I get this 2 errors

Error in port widths or dimensions. Output port 1 of 'licenta_LED/Unbuffer' is a [1x2048] matrix.

Error in port widths or dimensions. Input port 1 of 'licenta_LED/Generic LED' is a one dimensional vector with 1 elements.

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Zishan Quadri 2018-9-16

How will i get that generic led?

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Answer 1

Navan Ruthramoorthy 2013-4-2

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This means your LED block can take only scalar inputs while you are trying to send it a vector data. Unbuffer works on channels. You will get a scalar output from unbuffer for each column of data. You have 2048 columns. Try using reshape with output set to "Column vector (2-D)" instead of converting 2-D to 1-D. Your input to delay line and unbuffer should be a column vector.

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Mike 2013-4-3

Thank you! it worked!

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Answer 2

mar 2013-6-5

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https://ww2.mathworks.cn/matlabcentral/answers/69180-sound-visualisation-using-generic-led-in-simulink#answer_87848

Hi Mike , I am working on the same project . But I have a difficulty finding the required Low pass filter and specifying its parameters . Can you send me some information about the parameters and the blocks used.Thank you