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libraries/audio-tools/examples/examples-audiokit/streams-generator_inputmixer-audiokit/streams-generator_inputmixer-audiokit.ino

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+/**
+ * @file streams-generator_inputmixer-audiokit.ino
+ * @brief Tesing input mixer
+ * @author Phil Schatzmann
+ * @copyright GPLv3
+ */
+ 
+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+
+AudioInfo info(32000, 2, 16);
+SineWaveGenerator<int16_t> sineWave1(32000);                // subclass of SoundGenerator with max amplitude of 32000
+SineWaveGenerator<int16_t> sineWave2(32000);                // subclass of SoundGenerator with max amplitude of 32000
+GeneratedSoundStream<int16_t> sound1(sineWave1);             // Stream generated from sine wave
+GeneratedSoundStream<int16_t> sound2(sineWave2);             // Stream generated from sine wave
+InputMixer<int16_t> mixer;
+AudioBoardStream out(AudioKitEs8388V1);
+StreamCopy copier(out, mixer);                             // copies sound into i2s
+
+// Arduino Setup
+void setup(void) {  
+  // Open Serial 
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+  // start I2S
+  Serial.println("starting I2S...");
+  auto config = out.defaultConfig(TX_MODE);
+  config.copyFrom(info); 
+  out.begin(config);
+
+  // Setup sine wave
+  sineWave1.begin(info, N_B4);
+  sineWave2.begin(info, N_E4);
+
+  mixer.add(sound1);
+  mixer.add(sound2);
+  mixer.begin(info);
+
+  Serial.println("started...");
+}
+
+// Arduino loop - copy sound to out 
+void loop() {
+  copier.copy();
+}