cyberlink powerdvd 18 produces periodic static through my center speaker

Oh yeah, my favorest word!:rolleyes: But when abused it becomes what we have just experienced. phase shift very soon(with current adjustable matrix). I also believe they will provide the DPL II encoding with 90 deg. Sorry, unfortunately, I am very much satisfied with the FFDShow with probably 1000% of proven better features and stability.

I am curious of your opinions and especially your thoughts regarding its quality vs certified dolby decoders quality My independant Ad. Please test Aud-X DSfilter DPLII decoder (or rather DPLII decoder simulation),īy sending the output as AC3 through SPDIF to your HT amps. Apparently it seems what you wanna see.īTW. I agree again we are using totally differernt languages. indeed, the polls feels like something public.ġ) There is a noticable difference between the 90 deg phase shift and 180 deg phase shift : agreed.Ģ) 90 deg seem to produce significantly worst results, thus probably the DPLII downmixing equation is based on 180 deg. Maybe next timeĪlso check my quote above. I agree with Scharfis that the 90 deg phase shift should have been prepared with the same sign style, to be fully consistent with the 180 deg.

It shows no difference only with the simplest speaker test file.Īlso prove exactly which Tebasuna's observations concure your assumptions. You can test it with FFDShow which can adjust the matrix value with the sign. Therefore A and B are enough to distinguish between 90 and 180 phase shifts.Īgain, it's just your very dangerouse assumption. In phase invertion in the decoded signal and do not affect the separation (as Tebasuna already noticed).

The sign variations are not important, because they result Yes, A is 180 deg phase shift (the simpler approach),Ĭan you provide the proof in a source format(no dll)? So far, the fifthelem_B showed noticeable better seperation, but the test is not setup to compare the seperation fidelity(original vs DPL II). The FFDShow can switch between PCM/AC3 in digital out mode on the fly making it easy to compare.Īs I said many times, the speaker test clip is most generous on any models(more than 95% of the seperation quality).Īlso the matrices values(Ls1,Ls2,Rs1,Rs2.) might affect the seperation quality by the phase shift degree change.Ĭomparing the Wikipedia matrix with the current one would be reasonable(also making it reasonable using the variable reference than the values). You might also want to test with original 6ch(mp4 format) vs dpl II mix(music + speaker test clip), to compare reasonably. I cannot tell for sure (tendency goes to clip A) which is the 180 or 90 degree clip because I curently have no possibility to play back the AC3 in direct 5.1 off my PC.īut anyways this is NOT a fair comparision.

Cyberlink powerdvd 18 produces periodic static through my center speaker