Diff: signal_processing.h

Revision:

20:699e209fd19a

Parent:

19:f5e785fe50b1

--- a/signal_processing.h	Fri Feb 03 14:35:46 2017 +0000
+++ b/signal_processing.h	Fri Feb 03 14:41:40 2017 +0000
@@ -3,70 +3,6 @@
 
 #include "amakusa.h"
 
-#define SAMPLING_FREQUENCY 48000
-
-enum wave_form { triangle, square };
-
-    // Variable Frequency Oscillator. Only square and triangle
-class VFO {
-public:
-    VFO( void );
-    virtual ~VFO(void);
-    void run(           
-        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_duty_cycle( float duty );  // 0 ... 0.5
-    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_form form;         // form of the wave form.
-    
-        // internal variable.
-    int current_phase;      // internal variable of VFO.
-    int half_way;           // change point by duty cycle. ( period * duty_cycle ).
-    float rising_rate;
-    float falling_rate;
-    
-    void update_parameters(void);    // call one of the parameter is changed.
-};
-
-    // Blocking DC 
-class DCBlocker : public amakusa::AbstractFilter {
-public:
-    DCBlocker( uint32_t blockSize );
-    virtual void run( float32_t *pSrc, float32_t *pDst, uint32_t blockSize = 0 );
-private:    
-    float x_last;
-    float y_last;
-};
-
-    // 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 {
 public:
@@ -82,18 +18,13 @@
            
         // project depenedent members.
     void set_volume( float vol );
-    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:
         // essential members. Do not touch.
     void enter_critical_section(void);
     void leave_critical_section(void);
 
         // project dependent members.
-    float volume_level;     // 0 ... 1.0
-    Monophonic * note;
+    float volume_level;
 };
 
 #endif