Diff: vfo.cpp

Revision:

14:cec63d8da48c

Child:

15:de22b9d147e0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vfo.cpp	Mon Jan 30 14:48:42 2017 +0000
@@ -0,0 +1,57 @@
+#include "signal_processing.h"
+
+        // Modify this constructor to initialize your audio algorithm.
+VFO::VFO( void )
+{
+        // initial parameter setting.
+    this->style = triangle;
+    this->Fs = 48000;
+    this->frequency = 440;
+    this->duty_cycle = 0.5;
+}   // End of constructor()
+    
+    
+        // Modify this method to implement your audio algorithm.
+void VFO::run(           
+            float out_buffer[],         // vfo output buffer
+            unsigned int block_size     // block size [sample]
+           )
+{
+        // place the signal processing coce here
+    for ( int i= 0; i< block_size; i++ )
+    {
+    }
+}   // End of run()
+    
+
+void VFO::set_Fs( int Fs )
+{
+        // regulate the Fs.
+    if ( Fs != 32000 && Fs != 44100 && Fs != 96000 && Fs != 48000 )
+        Fs = 48000;
+    this->Fs = Fs;
+}
+
+void VFO::set_frequency( int freq )
+{
+    if ( freq > this->Fs / 4 )
+        freq = Fs/4;
+    this->frequency = freq;
+}
+
+void VFO::set_duty_cycle( float duty )
+{
+    if ( duty > 0.5f )   // high limit
+        duty = 0.5f;
+    if ( duty < 0.01f )  // low limit
+        duty = 0.01f;
+    this->duty_cycle = duty;
+}
+
+void VFO::set_wave_style( wave_style style )
+{
+    this->style = style;
+}
+
+
+