[linux-audio-dev] FOSS-tools for realtime audio analysis?

[mathias_lundgren at bredband.net]

Hi! 
 
Are there any tools/libraries around which makes it possible to do 
something like this? 
 
1) Feed an audio signal (f.ex. a sinus wave) into external hardware 
 
2) Record the signal returned from the external hardware 
 
3) "Compare" the two signals (realtime would be neat, if you know what 
latency you have btwn output/input I hope this might be achieved w 
Jack) and perform some kind of analysis of what the external hardware 
does to the signal (S/N ratio, damping, etc etc). 
 
Open source stuff would of course be preferable 
/Mathias