Harsh sound in surroundmodes

[admin_exported]

The receiver is a Yamaha RX-V1900. When the signal is REAL surroung, e.g. from DVD's the sound is OK. But when using 2-channel stereo sources, such as the primary transmissions from Viasat, the artificial surroundmodes (Prologic and DTS) are harsh in the sound. The center is OK, but front and surround channels issues such "tszitt" - "tszitt" sounds. Using the 7-channel stereo setting causes not this problem, but gives no really surround effect.

Is it me that is too critical, or are there something about the way this Prologic decoders are implemented that is just not good enaugh for an older HIFI guy?

The good old analog Prologic never sounded harsh in that way ...

br

 

[d4v3pum4]

My usual answer to this sort of question is you're sitting too close to the rears if you can hear those noises which are expected from a matrixed effect but I wouldn't describe them as "harsh"

Have you used an SPL meter to calibrate the levels, perhaps try turning the rears down a notch manually.

 

[Anonymous]

The distance to rear surround speakers are 2.10m and to the fronts 3.50m

Harsh? - I will say these "tszitt" digitalized sounds are a little like bird whisteling sounds, but far not so nice ;-)

I calibrated with the supplyed mic. This default setting works fine for real surround signals, but when using Prologic II, and the other artifical modes, my impression is that the center is too loud, and I damped it. This sure makes it easyer too, to hear these "tszitt" bird sounds.

Until recently I used analog decoding, and I really expected that the digital way of decoding should sound even better.

 

[margetti]

Does this sound like the same thing? http://community.whathifi.com/forums/t/341669.aspx

I get the same thing from time to time - depends which channel and even the programme - Masterchef seemed to be a cert for this happening.

 

[Anonymous]

Yes. I did not trigger on this thread, but it sounds as exact the same problem. I am wondering a little, no very much - why the digital decoding lacks so much compared to the old analog one, from same sources. Switching to stereo is a possibility, but it was really not the intention when buying a surround thing.