add audio chapter

Author: Nelson-numerical-software

AUDIO.md

@@ -0,0 +1,30 @@
+## Audio module
+
+
+Audio module provides tools for read and play audio data. ASIO and multichannel supports enable low latency streaming to audio devices.
+
+Example:
+
+```
+info = audiodevinfo()
+OUTPUT_DEVICE = 0;
+INPUT_DEVICE = 1;
+for k = [1:audiodevinfo(OUTPUT_DEVICE)]
+  info.output(k)
+end
+for k = [1:audiodevinfo(INPUT_DEVICE)]
+  info.output(k)
+end
+```
+
+```
+wav_audio = [modulepath('audio'), '/examples/haha.wav'];
+[y, fs] = audioread(wav_audio);
+playObj = audioplayer(y, fs);
+playblocking(playObj)
+delete(playObj)
+clear playObj
+```
+
+
+[Previous page](README.md)

FEATURES.md

@@ -27,6 +27,9 @@
 ## [JavaScript Object Notation](JSON.md)
 
 
+## [Audio module](AUDIO.md)
+
+
 ## [Code editor](CODE_EDITOR.md)