Lars Eggert skrev:
2. You have an experimental set-up. Why do you not also set-up real
receivers (players) so that the perceptual quality can be evaluated,
instead
of, or in addition to, your "E-model R-score"
You mean use PESQ as a metric instead of the E-model? We could have done
that, but most related work has used the E-model and we wanted to more
directly compare our results to theirs. Also, it would have required
additional work and we were not sure that we'd get significantly more
precise results this way.
I think Arne meant to actually do subjective evaluations. The issue I
see with this is that the quality you get will be heavily dependent on
the jitter-buffer implementation and error concealment implemented in
the player. Using a streaming player or something similar for these
subjective measurements would be providing results that are ignoring a
couple of important factor, like delay.
I think if one want to have subjective results from this one need to do
quite serious implementation that tries its best to provide high quality.
Cheers
Magnus Westerlund
Multimedia Technologies, Ericsson Research EAB/TVA/A
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