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libraries/audio-tools/examples/examples-stream/streams-generator-bin-serial/streams-generator-bin-serial.ino

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+/**
+ * @file streams-generator-bin-serial.ino
+ * @author Urs Utzinger
+ * @brief Reduce samples by binning; which is summing consecutive samples and optionally dividing by the number of samples summed.
+ * @copyright GPLv3
+ **/
+ 
+#include "AudioTools.h"
+
+AudioInfo                     info(44100, 2, 16);
+SineWaveGenerator<int16_t>    sineWave(16000);         // subclass of SoundGenerator with max amplitude of 32000
+GeneratedSoundStream<int16_t> sound(sineWave);         // stream generated from sine wave
+Bin                           binner(64, 2, true, 16);  // configure binning with binsize, channels, enable averaging, bits per channel
+ConverterStream<int16_t>      binning(sound, binner);  // pipe the sound to the binner
+CsvOutput<int16_t>            out(Serial);             // serial output
+StreamCopy                    copier(out, binning);    // stream the binner output to serial port
+
+// Arduino Setup
+void setup(void) {  
+  // Open Serial 
+  Serial.begin(115200);
+  AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Warning);
+
+  // Define CSV Output
+  out.begin(info);
+
+  // Setup sine wave
+  sineWave.begin(info, N_B4);
+}
+
+// Arduino loop - copy sound to out with conversion
+void loop() {
+  copier.copy();
+}