AEC | Double Talk | ERLE | G.168 | LEC | NLMS

HII,

I am doing my project work on Acoustic cancellation for path /tail 
length of  300 msec.i have few doubts in alg.. implementation i hope 
you can help me if any one have worked on that ..

i have gone through some materials on the same in frequency domain.i 
started with block frequency adaptive filtering using overlap save 
method  for the delay of only 32 msec(blk of 512 ,256actual filter 
coeff ) for the purpose of testing of tht algorithm intially...  but 
i did't get any positive response...

and as test vectors i have taken some speech(rin) and with gold wave 
i created the acoustic echo(sin)in tht ..is that approach is correct?

where can i get the actual test vectors (g.167)?
pls gve me any urls for the block freq domain algorithm..
	Thanks in advance..
	

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