[Reverb]

- num diffusion steps is template param
- Contructor: use initializer list for delays per diffusion step
- added param for feedback delay min and max

reverb/reverb.hpp

@@ -4,6 +4,7 @@
 #include <cstdlib>
 #include <delay/buffer_multi.hpp>
 #include <common/mix.hpp>
+#include <initializer_list>
 
 template<typename T, size_t numCh>
 class Delay
@@ -109,18 +110,18 @@ class Diffusor
 	}
 };
 
-template<typename T, uint numCh>
+template<typename T, uint numCh, uint numSteps>
 class Reverb
 {
-	std::array<Diffusor<T, numCh>, 3> m_diffusors;
+	std::vector<Diffusor<T, numCh>> m_diffusors;
 	Delay<T, numCh> m_feedbackDly;
 	T fb_dly_out[numCh];
 	T fb_gain;
 
 	public:
-	Reverb(uint maxDelay)
-	: m_diffusors({maxDelay, maxDelay, maxDelay})
-	, m_feedbackDly(9600, 4800)
+	Reverb(std::initializer_list<Diffusor<T, numCh>> maxDelay, uint fb_dly_min, uint fb_dly_max)
+	: m_diffusors(maxDelay)
+	, m_feedbackDly(fb_dly_max, fb_dly_min)
 	, fb_gain(0)
 	{
 		for (int c=0; c < numCh; c++)