 how many channels there are in a given frame array and these are easy to interpret: <em>numInputChannels</em> is the array size of the <em>audioInputFrame</em> array while <em>numOutputChannels</em> is the array size of the <em>audioOutputFrame</em> array. The audio samples are packed into the arrays according to the standardized audio file formats. These are published on the internet, and you can also find a very concise description of the channel packing formats in the vstspeaker.h file that is inside th