outrg — Allow output to a range of adjacent audio channels on the audio input device
kstart - the number of the first channel of the output device to be accessed (channel numbers starts with 1, which is the first channel)
aout1, aout2, ... aoutN - the arguments containing the audio to be output to the corresponding output channels.
outrg allows to output a range of adjacent channels to the output device. kstart indicates the first channel to be accessed (channel 1 is the first channel). The user must be sure that the number obtained by summing kstart plus the number of accessed channels -1 is <= nchnls.