Diff: signal_processing.h

Revision:

18:b9b1116f8768

Parent:

16:d4ea3e6a0bce

Child:

19:f5e785fe50b1

--- a/signal_processing.h	Tue Jan 31 14:19:16 2017 +0000
+++ b/signal_processing.h	Wed Feb 01 15:00:31 2017 +0000
@@ -3,30 +3,32 @@
 
 #include "amakusa.h"
 
-enum wave_style { triangle, square };
+#define SAMPLING_FREQUENCY 48000
 
-    // User Signal processing Class 
+enum wave_form { triangle, square };
+
+    // Variable Frequency Oscillator. Only square and triangle
 class VFO {
 public:
-        // essential members. Do not touch
     VFO( void );
+    virtual ~VFO(void);
     void run(           
-        float out_buffer[],    // place to write the right output samples
+        float out_buffer[],         // place to write the right output samples
         unsigned int block_size     // block size [sample]
         );
            
         // parameter settings
-    void set_frequency( int freq );  // unit is Hz.
-    void set_Fs( int Fs );          // unit is Hz.
+    void set_frequency( int freq );     // unit is Hz.
+    void set_Fs( int Fs );              // unit is Hz.
     void set_duty_cycle( float duty );  // 0 ... 0.5
-    void set_wave_style( wave_style style );
+    void set_wave_form( wave_form form );
 private:
 
         // control variables.
     int frequency;          // VFO frequency [Hz]
     int Fs;                 // sampling Frequency [Hz]
     float duty_cycle;       // VFO duty cycle. 0 ... 0.5
-    wave_style style;       // style of the wave form.
+    wave_form form;         // form of the wave form.
     int current_phase;      // internal variable of VFO.
     
         // internal variable.
@@ -37,6 +39,23 @@
     void update_parameters(void);    // call one of the parameter is changed.
 };
 
+    // Monophonic synthsizer class
+class Monophonic {
+public:
+    Monophonic( unsigned int  block_size );
+    virtual ~Monophonic(void);
+    void run(           
+        float out_buffer[],         // place to write the right output samples
+        unsigned int block_size     // block size [sample]
+        );
+    void set_Fs( int Fs );                  // unit is Hz.
+    void set_vfo_frequency( int freq );     // unit is Hz.
+    void set_vfo_duty_cycle( float duty );  // 0 ... 0.5
+    void set_vfo_wave_form( wave_form form );
+private:
+    VFO *vfo;
+};
+
 
     // User Signal processing Class 
 class SignalProcessing {
@@ -56,7 +75,7 @@
     void set_Fs( int Fs );          // unit is Hz.
     void set_vfo_frequency( int freq );  // unit is Hz.
     void set_vfo_duty_cycle( float duty );  // 0 ... 0.5
-    void set_vfo_wave_style( wave_style style );
+    void set_vfo_wave_form( wave_form form );
 private:
         // essential members. Do not touch.
     void enter_critical_section(void);
@@ -64,7 +83,7 @@
 
         // project dependent members.
     float volume_level;     // 0 ... 1.0
-    VFO *vfo;
+    Monophonic * note;
 };
 
 #endif