Converting Matlab code to C without using Matlab coder.

Hi,

I want to use matlab code to C code. I do not want to use matlab coder since the code generated by it is very unreadable to me. I am converting the logic line by line into C. However I am stuck at 'VariableFractionalDely' (VFD) function of matlab. I have trimmed the main code to the problem I am facing. Attached is the code I wish to implement in C.

vfd = dsp.VariableFractionalDelay('InterpolationMethod','FIR','FilterHalfLength',2,'InterpolationPointsPerSample',10000,'Bandwidth',1,'MaximumDelay',1000);
 
% inputs
rx = zeros(13630,128);     
BF = zeros(109,128);
 
tic
    % wieghted sum and delay beamforming   
    
    for i = 1:1:109                                          
        for j = 1:1:128                        
             out(:,j) = vfd(abs(rx(:,j)),(BF(i,j)));                  
        end
         out_add = sum(out(:,128),2);
    end
toc

[Walter Roberson]

Algorithms...

https://idea.library.drexel.edu/islandora/object/idea:4124/datastream/OBJ/download/Variable_Fractional_Digital_Delay_Filter_on_Reconfigurable_Hardware.pdf

Answer 1

[Dinesh Yadav]

Hi Ratnesh,

You will have to use MATLAB coder inorder to get the C code for your use. As dsp.VariableFractionalDelay is a function whos internal implementation you will not have access to. Either you will have to search online on how it can be implemented but that implementation may or may not give same result. Therefore I will recommend you using the MATLAB coder.