Bocsi, nem kekeckedni akarok nem vagyok szakember, de ez a megoldás éppen azért merült fel bennem, mert a HDMI kábelen tudomásom szerint I2S jel megy. Tehát valószínűleg ez csak megfelelő kábelminőség kérdése. Ezért kötném ki 10-20 cm-es kábellel HDMI aljzatba, és onnan jó minőségű HDMI kábellel (1-1,5 m hosszan) mennék tovább.
A jó minőségű tápon túl vagyok. Jelenleg labortápról üzemel.
Az LPCM és az I2S nem ugyanaz. Az I2S a házon belüli chipek közötti adatátvitel, azaz nem méteres jelátvételre van kitalálva.
"Below I'll make a short list (from what I can remember right now) of things that should be taken into account when you are using a WaveIO:
1. PSU: make sure that your PSU is sourcing at least 0.38A @ 5Vdc. If you're feeding your Wave board from an USB port then you can run a short test by changing it with another free one and see if there are some improvements! (maybe trying your board on a different computer?)
2. To not forget: any USB Hubs or "jitter cleaners" placed between your laptop and WaveIO could give you troubles so please try to make your audio setup running with base parts / components mounted on it. You can add them later!
3. I assume that your WaveIO stood for quite a long time: given this please remove both jumpers on J8 and (especially) on J12 and put them back again for a few times in a row just to make sure that you will remove any parasitic resistance that could be there... A better alternative would be to replace those jumpers with new ones!
4. As it happened to phuongdk, try and change the USB cable if you have any doubts! Any 1-2 meters one should be okay.
5. On TUSBAudio Control Panel @ "Buffer Settings" tab you'll find two options: USB Streaming Mode (which, for the beginning, must be set on "Safe") and "ASIO Buffer Size" which you should leave for "Auto".
Ah, all above are valid if you are going to use ASIO output and not KS, WASAPI and so on... Again, for testing purposes please use ASIO! Later on you can freely change it with whatever you like/works on your laptop.
6. I'm assuming you're using an I2S port! I don't know if it's the isolated one or not but in any cases you have to be careful with any I2S wires/cables used there! All I2S wires should NOT have different lengths AND all I2S wires should have a length less than 10 cm. I'm usually using 5cm and is fine here...
Well, that's what I remember right now! I usually squeeze my brain to offer more infos when needed but today is a special day for me thus, with your approval, I'll leave it "as is" for now! Starting from tomorrow, things will get back to 'normality'.
FYI, I'm using an Acer laptop too (a bit old one: 8930G) with latest Foobar version + Win 7x64 + 3.26 Drivers and all is okay here so you have plenty of chances to succeed!
Have a beautiful day to all,
De mindig vannak kivételek, hátha neked sikerül.