add some comments on audio handling

src/ofApp.cpp

@@ -284,8 +284,8 @@ void ofApp::audioIn(ofSoundBuffer & input) {
 		ofLogVerbose(PACKAGE) << "Start recording...";
 		// copy previous buffers to the recording
 		sampleBuffers = previousBuffers;
-		sampleBuffers.setMaxLen(numBuffers); // just to make sure (not tested)
-		recordingCounter = sampleBuffers.size();
+		sampleBuffers.setMaxLen(numBuffers);		// hacky: last step overwrites maxLen
+		recordingCounter = sampleBuffers.size();	// we already have the previous buffer
 		// trigger recording in the next function call
 		recording = true;
 		recordingStarted = true;

src/ofApp.h

@@ -67,9 +67,9 @@ class ofApp : public ofBaseApp {
 
 		// audio 
 		ofSoundStream soundStream;
-		int inputDevice = -1;
-		int inputChannel = 0;
-		std::vector<float> monoBuffer; //< mono inputChannel stream buffer
+		int inputDevice = -1;			// -1 means search for default device
+		int inputChannel = 0;			// 0 means mono, 1 means stereo
+		std::vector<float> monoBuffer;	//< mono inputChannel stream buffer
 		bool listening = true;
 
 		// neural network input parameters

[Dan Wilcox]

actually it's 0 is left, 1 is right, 2 is the third channel, etc

"mono" just means 1 channel no matter what index it may have

[Dan Wilcox]

Of course, 0 = left, 1 = right is only traditional. You could have a sound card with 64 inputs and use channels 1 and 64 for your stereo stream if you want. :)