Displaying 4 results from an estimated 4 matches for "best_nind".
2006 Sep 19
2
Exc CB Search very little Question
...forward. My goal is to make sure if nothing is embedded,
the altered Speex version still needs to write exactly the same
coefficients as the original non-stego version.
For my scenario, I stick to NB encoding at 15kbps, so N is equal to 2.
So all I can do, in my opinion, is to check if the LSBs of
best_nind[0][i] and best_nind[1][i] (for each i in 0:nb_subvect) are
different. The Problem is, that I would like to know how big the error
is, which I introduce into the signal by this change. But in the end, I
only know the ndist for all indexes of the last one of these nb_subvect
indexes. (I could increas...
2006 Sep 19
0
Exc CB Search very little Question
...re if nothing is embedded,
> the altered Speex version still needs to write exactly the same
> coefficients as the original non-stego version.
>
> For my scenario, I stick to NB encoding at 15kbps, so N is equal to 2.
> So all I can do, in my opinion, is to check if the LSBs of
> best_nind[0][i] and best_nind[1][i] (for each i in 0:nb_subvect) are
> different. The Problem is, that I would like to know how big the error
> is, which I introduce into the signal by this change. But in the end, I
> only know the ndist for all indexes of the last one of these nb_subvect
> index...
2006 Sep 19
2
Exc CB Search very little Question
Hi,
Jean-Marc Valin wrote:
> Well, you could change the order in the encoder as long as you reverse
> it in the decoder as well.
Ok, I see that in the split_cb_shape_sign_unquant function, that each
coefficient is tied to it's position in the nb_subvect exc coefficients.
Honestly, I have problems understanding what exactly the codebook search
works like. If you have the time to to
2006 Sep 20
2
Denoiser level and AEC problem
...forward. My goal is to make sure if nothing is embedded,
the altered Speex version still needs to write exactly the same
coefficients as the original non-stego version.
For my scenario, I stick to NB encoding at 15kbps, so N is equal to 2.
So all I can do, in my opinion, is to check if the LSBs of
best_nind[0][i] and best_nind[1][i] (for each i in 0:nb_subvect) are
different. The Problem is, that I would like to know how big the error
is, which I introduce into the signal by this change. But in the end, I
only know the ndist for all indexes of the last one of these nb_subvect
indexes. (I could increas...