Wolfram Function Repository
Instantuse addon functions for the Wolfram Language
Function Repository Resource:
Compute Chladni figures
ResourceFunction["ChladniFigure"][x,y,L,m,n] gives Chladni figures. 
Compute a value at a point:
In[1]:= 

Out[1]= 

Plot only contours:
In[2]:= 

Out[2]= 

With full color:
In[3]:= 

Out[3]= 

Make a 3Dplot:
In[4]:= 

Out[4]= 

Get a higher resolution:
In[5]:= 

Out[5]= 

For m=n:
In[6]:= 

Out[6]= 

Wolfram Language 11.3 (March 2018) or above
This work is licensed under a Creative Commons Attribution 4.0 International License