MATLAB Answers


Sound visualisation using Generic led in simulink

Asked by Mike
on 30 Mar 2013
Latest activity Commented on by Zishan Quadri on 16 Sep 2018
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.

  1 Comment

How will i get that generic led?

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3 Answers

Answer by Navan Ruthramoorthy on 2 Apr 2013
 Accepted Answer

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.

  1 Comment

Thank you! it worked!

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Answer by mar
on 5 Jun 2013

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


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Answer by mar
on 7 Jun 2013

Hi again Mike..please I need your help urgent.of you can send to me info or file .


ok i will provide all the information tomorrow. hope it's not too late
Thank you Mike .

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