[chuck-users] about "dac/adc" to control input/out??

Dear Sir, In my PC, there are two audio interface. One is the default in motehr board (SoundMax). Another is USB dungo. I can use --dacx and --adcx to force the audio input and ouput in SoundMax. But I can not use --dacx or --adcx to force the input in USB dungo. I do not know what is wrong. The codes are as follows: adc => gain g => blackhole; float x; while( true ) { g.last() => x; if( std.fabs(x) >= .05 ){ <<< x, "hello" >>>; } 1::samp => now; } Best Regards Lewis