diff examples/03-Analog/analog-input/render.cpp @ 524:9f455f01edd5 prerelease

Doxygen updates

--- a/examples/03-Analog/analog-input/render.cpp	Thu Jun 23 04:31:09 2016 +0100
+++ b/examples/03-Analog/analog-input/render.cpp	Thu Jun 23 10:19:24 2016 +0100
@@ -101,10 +101,17 @@
 
 The important thing to notice is that audio is sampled twice as often as analog 
 data. The audio sampling rate is 44.1kHz (44100 frames per second) and the 
-analog sampling rate is 22.05kHz (22050 frames per second). On line 62 you might 
-notice that we are processing the analog data and updating frequency and 
-amplitude only on every second audio sample, since the analog sampling rate is 
-half that of the audio.
+analog sampling rate is 22.05kHz (22050 frames per second). Notice that we are 
+processing the analog data and updating frequency and amplitude only on every 
+second audio sample, since the analog sampling rate is half that of the audio.
+
+````
+if(!(n % gAudioFramesPerAnalogFrame)) {
+    // Even audio samples: update frequency and amplitude from the matrix
+    frequency = map(analogRead(context, n/gAudioFramesPerAnalogFrame, gSensorInputFrequency), 0, 1, 100, 1000);
+    amplitude = analogRead(context, n/gAudioFramesPerAnalogFrame, gSensorInputAmplitude);
+}
+````
 
 Note that the pin numbers are stored in the variables `gAnalogInputFrequency` and 
 `gAnalogInputAmplitude`. These are declared in the main.cpp file; if you look in