Adding white and pink noise

OpenAudio_ArduinoLibrary.h

@@ -12,6 +12,8 @@
 #include "input_i2s_f32.h"
 #include "play_queue_f32.h"
 #include "record_queue_f32.h"
+#include "synth_pinknoise_f32.h"
 #include <synth_waveform_F32.h>
+#include "synth_whitenoise_f32.h"
 #include "synth_sine_f32.h"
 #include "output_i2s_f32.h"

keywords.txt

@@ -36,8 +36,11 @@ AudioMultiply_F32	KEYWORD1
 AudioOutputI2S_F32	KEYWORD1
 AudioPlayQueue_F32	KEYWORD1
 AudioRecordQueue_F32	KEYWORD1
+AudioSynthNoiseWhite_F32	KEYWORD1
+AudioSynthNoisePink_F32	KEYWORD1
 AudioSynthWaveform_F32	KEYWORD1
 
+
 AudioSynthWaveformSine_F32	KEYWORD1
 frequency		KEYWORD2
 phase			KEYWORD2

synth_pinknoise_f32.h

@@ -0,0 +1,60 @@
+/* 
+*	AudioSynthNoiseWhite_F32
+*
+*	Created: Chip Audette (OpenAudio), Feb 2017
+*       Extended from on Teensy Audio Library
+*
+*	License: MIT License.  Use at your own risk.
+*/
+
+#ifndef synth_pinknoise_f32_h_
+#define synth_pinknoise_f32_h_
+#include "Arduino.h"
+#include "AudioStream_F32.h"
+#include <Audio.h>
+#include "utility/dspinst.h"
+
+class AudioSynthNoisePink_F32 : public AudioStream_F32
+{
+//GUI: inputs:0, outputs:1 //this line used for automatic generation of GUI node
+//GUI: shortName:pinknoise  //this line used for automatic generation of GUI node
+public:
+	AudioSynthNoisePink_F32() : AudioStream_F32(0, NULL) {
+		output_queue.begin();
+		
+		patchCord100 = new AudioConnection(noise, 0, i16_to_f32, 0);  //noise is an Int16 audio object.  So, convert it!
+    	patchCord101 = new AudioConnection_F32(i16_to_f32, 0, output_queue, 0);
+	}
+	
+	//define audio processing stack right here.
+    AudioSynthNoisePink  	noise;
+    AudioConvert_I16toF32   i16_to_f32; 
+    AudioRecordQueue_F32    output_queue;    
+    AudioConnection     *patchCord100;
+    AudioConnection_F32 *patchCord101;
+	
+    void update(void) {
+      output_queue.clear();
+    	
+      //manually update audio blocks in the desired order
+      noise.update();  //the output should be routed directly via the AudioConnection
+      i16_to_f32.update();  // output is routed via the AudioConnection
+      output_queue.update();
+      
+      //get the output
+      audio_block_f32_t  *block = output_queue.getAudioBlock();
+      if (block == NULL) return;
+
+      //transmit the block, and release memory
+      AudioStream_F32::transmit(block);
+      output_queue.freeAudioBlock();
+    }
+    void amplitude(float n) {
+    	noise.amplitude(n);
+    }
+    
+private:    
+
+};
+
+#endif

synth_whitenoise_f32.h

@@ -0,0 +1,60 @@
+/* 
+*	AudioSynthNoiseWhite_F32
+*
+*	Created: Chip Audette (OpenAudio), Feb 2017
+*       Extended from on Teensy Audio Library
+*
+*	License: MIT License.  Use at your own risk.
+*/
+
+#ifndef synth_whitenoise_f32_h_
+#define synth_whitenoise_f32_h_
+#include "Arduino.h"
+#include "AudioStream_F32.h"
+#include <Audio.h>
+#include "utility/dspinst.h"
+
+class AudioSynthNoiseWhite_F32 : public AudioStream_F32
+{
+//GUI: inputs:0, outputs:1 //this line used for automatic generation of GUI node
+//GUI: shortName:whitenoise  //this line used for automatic generation of GUI node
+public:
+	AudioSynthNoiseWhite_F32() : AudioStream_F32(0, NULL) {
+		output_queue.begin();
+		
+		patchCord100 = new AudioConnection(noise, 0, i16_to_f32, 0);  //noise is an Int16 audio object.  So, convert it!
+    	patchCord101 = new AudioConnection_F32(i16_to_f32, 0, output_queue, 0);
+	}
+	
+	//define audio processing stack right here.
+    AudioSynthNoiseWhite  	noise;
+    AudioConvert_I16toF32   i16_to_f32; 
+    AudioRecordQueue_F32    output_queue;    
+    AudioConnection     *patchCord100;
+    AudioConnection_F32 *patchCord101;
+	
+    void update(void) {
+      output_queue.clear();
+    	
+      //manually update audio blocks in the desired order
+      noise.update();  //the output should be routed directly via the AudioConnection
+      i16_to_f32.update();  // output is routed via the AudioConnection
+      output_queue.update();
+      
+      //get the output
+      audio_block_f32_t  *block = output_queue.getAudioBlock();
+      if (block == NULL) return;
+
+      //transmit the block, and release memory
+      AudioStream_F32::transmit(block);
+      output_queue.freeAudioBlock();
+    }
+    void amplitude(float n) {
+    	noise.amplitude(n);
+    }
+    
+private:    
+
+};
+
+#endif