Thank you Roman,

I do think it is possible to get sample correct bangs from analyzed
audio:
http://lists.puredata.info/pipermail/pd-list/2010-12/085681.html

Ok! After reading this tip again I understood it something better.
But..well, one block later may be accourate theoretically but not real(time). Anyway this may cover some needs e.g. writing tables for scoping audio...

regards
Dietrich