TAAE Submixer to create Bus Sends from Channels to different Channelgroup
u can use addOutputReceiver: and addChannels: like this:
// Make a instance
self.dly_mixer = [[[AESubmixer alloc] init] autorelease];
// Add Sum to any Channelgroup for Delay Reverb etc
[_audioController addChannels:[NSArray arrayWithObjects: _dly_mixer, nil] toChannelGroup:_channelgroup_dly];
// 4 Send from Channels
[_audioController addOutputReceiver:_dly_mixer forChannel:_mysynti0];
[_audioController addOutputReceiver:_dly_mixer forChannel:_mysynti1];
[_audioController addOutputReceiver:_dly_mixer forChannel:_mysynti2];
[_audioController addOutputReceiver:_dly_mixer forChannel:_mysynti3];