Smoothing output in delay plugin

Question

Pablo Panitta 2021-4-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/807047-smoothing-output-in-delay-plugin

编辑： Pablo Panitta 2021-4-27

Hi

I´m trying to simulate audio room reflection using dsp.VariableIntegerDelay ,where distance parameter dictates the delay amount. The issue I´m experiencing are the glitches and artifacts every time I change the "distance" parameter fast. As I´m thinking in a plugin where the objects can be moved, I need to solve this.

I understand that this can be overcome, smoothing the output (or may be "distance" parameter?), but I don´t find the way of how to implement it here.

I would really appreciate If anybody can give me a hint or propose an alternative solution / method.

Thanks

Pablo

classdef Delay_Test< audioPlugin
    properties
   distance=1;
    end 
        properties (Access = private)
        
        FractionalDelayDI    
        delayInSamplesDI     
        pSR
            
        end
        
 properties (Constant)
        PluginInterface = audioPluginInterface('PluginName','Delay_Test',...
            'InputChannels',2,'OutputChannels',2, ...
            audioPluginParameter('distance',...
            'DisplayName','',...
            'Mapping',{'lin',0.5,19.5},...
            'Label','mts'));
    end        
    methods
        
        
       function plugin=Delay_Test
                        
            plugin.pSR = getSampleRate(plugin);
        
            plugin.FractionalDelayDI = dsp.VariableIntegerDelay('MaximumDelay',65535);
            needtocalculateDelay(plugin);
       end
        
       
       function out=process(plugin,in)
           
          echo=plugin.FractionalDelayDI(in,plugin.delayInSamplesDI);
          out=in+echo;
           
       end
       
       function set.distance(plugin, val)
           plugin.distance = val;
           needtocalculateDelay(plugin);
       end
       
       function needtocalculateDelay(plugin)
       
        plugin.delayInSamplesDI=(plugin.distance/330)*plugin.pSR;   
  
       end
       
       function reset(plugin)
           
          reset(plugin.FractionalDelayDI);
           
       end
       
    end
end