seiichi horie
Synthesizer based on the Unzen / Nucleo F746ZG
Dependencies: amakusa mbed-dsp mbed shimabara ukifune unzen_nucleo_f746
Fork of
skeleton_unzen_nucleo_f746
by 
seiichi horie
雲仙フレームワークのテストとして作っているプロジェクトです。中身はどんどん変っていきます。 説明はDSP空挺団の「シンセサイザー」カテゴリーを参照してください。初回は「ドッグフードを食べる」です。
Diff: signal_processing.h
- Revision:
- 14:cec63d8da48c
- Parent:
- 13:b33cb5925113
- Child:
- 15:de22b9d147e0
diff -r b33cb5925113 -r cec63d8da48c signal_processing.h
--- a/signal_processing.h Sun Jan 29 03:05:56 2017 +0000
+++ b/signal_processing.h Mon Jan 30 14:48:42 2017 +0000
@@ -3,6 +3,34 @@
#include "amakusa.h"
+enum wave_style { triangle, square };
+
+ // User Signal processing Class
+class VFO {
+public:
+ // essential members. Do not touch
+ 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_style( wave_style style );
+private:
+
+ // internal 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.
+ int current_phase; // internal variable of VFO.
+};
+
+
// User Signal processing Class
class SignalProcessing {
public:
@@ -18,13 +46,18 @@
// project depenedent members.
void set_volume( float vol );
+ 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 );
private:
// essential members. Do not touch.
void enter_critical_section(void);
void leave_critical_section(void);
// project dependent members.
- float volume_level;
+ float volume_level; // 0 ... 1.0
+ VFO *vfo;
};
#endif