text: #ifndef Lowpass_hpp
  #define Lowpass_hpp
  
  #include "OnePole.hpp"
  
  using tpt_filter_ugens::OnePole;
  
  namespace tpt_filter_ugens {
  
      class Lowpass : public OnePole {
      public:
          Lowpass();
  
      protected:
          void next_a(int inNumSamples) noexcept;
  
          void next_k(int inNumSamples) noexcept;
      };
  
  }
  
  #endif /* Lowpass_hpp */
  