Sorry to bother again.
I used the audio graph processing method to play the mic-in and add effect to the sound to the speaker. When I use the AUGraph_1 : RIO_input->Converter-> AUiPodE->RIO_output, it works fine and I can hear the sound play back.
But when I use the AUGraph_2 : RIO_input->Converter-> AUReverb2->RIO_output, try to add some reverb, the thing goes wrong,and no sound at all.
here is the log printed by using CAShow:
AUGraph_1>>> node 1: 'auou' 'rioc' 'appl', instance 0x816f920 O I
node 2: 'aufc' 'conv' 'appl', instance 0x81713e0 O I
node 3: 'aufx' 'ipeq' 'appl', instance 0x8171740 O I
Connections:
node 1 bus 1 => node 2 bus 0 [ 2 ch, 0 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer]
node 2 bus 0 => node 3 bus 0 [ 2 ch, 44100 Hz, 'lpcm' (0x00000C2C) 8.24-bit little-endian signed integer, deinterleaved]
node 3 bus 0 => node 1 bus 0 [ 2 ch, 44100 Hz, 'lpcm' (0x00000C2C) 8.24-bit little-endian signed integer, deinterleaved]
AUGraph_2>>>>
node 1: 'auou' 'rioc' 'appl', instance 0x8151420 O
node 2: 'aufc' 'conv' 'appl', instance 0x7539df0 O
node 3: 'aufx' 'rvb2' 'appl', instance 0x7539210 O
Connections:
node 1 bus 1 => node 2 bus 0 [ 2 ch, 0 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer]
node 2 bus 0 => node 3 bus 0 [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
node 3 bus 0 => node 1 bus 0 [ 2 ch, 0 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer]
Is there something wrong?
Please help me with this, any clue will be great appreciated.
Best
I did the same exercise but used a mixer unit instead of a converter as follows
AudioUnitGraph 0x13D000:
Member Nodes:
node 1: 'auou' 'rioc' 'appl', instance 0x7ac9100 O
node 2: 'aumx' 'mcmx' 'appl', instance 0x7acdee0 O
node 3: 'aufx' 'rvb2' 'appl', instance 0x7acf150 O
Connections:
node 1 bus 1 => node 2 bus 1 [ 1 ch, 44100 Hz, 'lpcm' (0x00000C2C) 8.24-bit little-endian signed integer, deinterleaved]
node 2 bus 0 => node 3 bus 0 [ 2 ch, 44100 Hz, 'lpcm' (0x00000029) 32-bit little-endian float, deinterleaved]
node 3 bus 0 => node 1 bus 0 [ 2 ch, 0 Hz, 'lpcm' (0x0000000C) 16-bit little-endian signed integer]
I simplified the code from Audiograph http://zerokidz.com/audiograph/Home.html to do this as it is very well commented and explains the gotchas concerning the various ASBD formats.
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