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libraries/audio-tools/examples/examples-dsp/examples-maximilian/12-SamplePlayer/12-SamplePlayer.ino

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+#include "AudioTools.h"
+#include "AudioTools/AudioLibs/MaximilianDSP.h"
+#include "AudioTools/AudioLibs/AudioBoardStream.h"
+#include "maximilian.h"
+#include <FS.h>
+#include <SD_MMC.h>
+
+
+// Define Arduino output
+AudioBoardStream out(AudioKitEs8388V1);
+Maximilian maximilian(out);
+
+// MAXIMILIAN
+maxiSample beats; //We give our sample a name. It's called beats this time. We could have loads of them, but they have to have different names.
+
+void setup() {//some inits
+    // setup logging
+    Serial.begin(115200);
+    AudioToolsLogger.begin(Serial, AudioToolsLogLevel::Info);
+
+    // setup audio output
+    auto cfg = out.defaultConfig(TX_MODE);
+    out.begin(cfg);
+    maximilian.begin(cfg);
+
+    // setup SD to allow file operations
+    if(!SD_MMC.begin()){
+        Serial.println("Card Mount Failed");
+        return;
+    }
+
+    //load in your samples: beat2.wav is too big - but snare.wav will work
+    //beats.load("/sdcard/Maximilian/beat2.wav");
+    beats.load("/sdcard/Maximilian/snare.wav");
+    //get info on samples if you like.
+    Serial.println(beats.getSummary().c_str());
+
+}
+
+//this is where the magic happens. Very slow magic.
+void play(float *output) {
+    //output[0]=beats.play();//just play the file. Looping is default for all play functions.
+    output[0]=beats.playAtSpeed(0.68);//play the file with a speed setting. 1. is normal speed.
+    //output[0]=beats.playAtSpeedBetweenPoints(0.5,0,13300);//linear interpolationplay with a frequency input, start point and end point. Useful for syncing.
+    //output[0]=beats.play4(0.5,0,13300);//cubic interpolation play with a frequency input, start point and end point. Useful for syncing.
+    
+    output[1]=output[0];
+}
+
+// Arduino loop
+void loop() {
+    maximilian.copy();
+}