Merge branch 'main' of https://github.com/pschatzmann/arduino-audio-tools into main

Author: pschatzmann

examples/examples-stream/streams-generator-a2dp/streams-generator-a2dp.ino

@@ -39,9 +39,11 @@ void setup(void) {
   in.begin(cfg);
 
   // We send the test signal via A2DP - so we conect to the MyMusic Bluetooth Speaker
-  out.setVolume(10);
-  out.begin(TX_MODE, "LEXON MINO L");
-  //out.auto_reconnect = true;  // if this is use we just quickly connect to the last device ignoring cfg.name
+  auto cfgA2DP = out.defaultConfig(TX_MODE);
+  cfgA2DP.name = "LEXON MINO L";
+  //cfgA2DP.auto_reconnect = false;
+  out.begin(cfgA2DP);
+  out.setVolume(0.3);
   Serial.println("A2DP is connected now...");
 
 }

src/AudioEffects/SoundGenerator.h

@@ -264,18 +264,18 @@ class SquareWaveGenerator : public SineWaveGenerator<T> {
 template <class T>
 class NoiseGenerator : public SoundGenerator<T> {
     public:
-        // the scale defines the max value which is generated
-        NoiseGenerator(double scale=1.0) {
-            this->scale = scale;
+        /// the scale defines the max value which is generated
+        NoiseGenerator(T amplitude = 32767) {
+            this->amplitude = amplitude;
         }
 
         /// Provides a single sample
         T readSample() {
-            return  ((rand() % (static_cast<T>(2 * scale)) - scale)); // generate number between  -scale / scale
+            return (random(-amplitude, amplitude));
         }
 
     protected:
-        double scale;
+        T amplitude;
 
 };
 

src/AudioLibs/AudioA2DP.h

@@ -264,6 +264,7 @@ class A2DPStream : public AudioStream, public AudioBaseInfoSource {
             return a2dp_buffer==nullptr ? 0 : a2dp_buffer->availableForWrite();
         }
 
+        // Define the volme (values between 0 and 1)
         virtual void setVolume(float volume){
             this->volume = volume;
             if (a2dp!=nullptr) a2dp->set_volume(volume * 100);