[Solved by ChrisK ;) ] Laptop to U-Mix 44 Noise issues!

[paul53]

Bad news, it didnt seem to make any difference.


Config 2011/07/13 12:53

OS=Microsoft Windows XP Service Pack 3 build=2600 processor=PROCESSOR_IDENTIFIER=x86 Family 6 Model 15 Stepping 13, GenuineIntel
MixVibes DVS version=7.400 DLL langage=US version=7.400

System Setting
--------------------
Load in Ram Channel1= Yes Channel2= Yes
Load memory time limit=13 Load time=normal
Low gui priority=Yes Equalization bypass=Yes
MultiInstance=No

General Setting
--------------------
Nb Mixer Channels=2 Nb Samples=16
Windows Caption=No Theme=0
TAG V1=Yes TAG V2=Yes

Mix Setting
--------------------
AutoCue=Yes AutoGain=Yes AutoBpm at Load=No
Display Pitch=Yes Auto Match at load=No
Bpm Range min=78 max=150
Loop in bar boundaries=Yes Security=No History=Yes
Compressor=No Limiter=No

Sound Configuration
--------------------
Nb Sound=2 Nb Mixer=0
Managment Type ASIO
Device=MixvibesAsioUMix44 AsioVersion=0 DriverVersion=2
Latency=6 Driver sampling=44100 Nb Input=4 Nb Output=4
Managment Type ASIO
1-U-MIX44 Sound Device 1 2-U-MIX44 Sound Device 2
3-U-MIX44 Sound Device 3 4-U-MIX44 Sound Device 4

Vinyl Configuration
--------------------
Vinyl1 connected=vinyl version 2
Audio=ASIO source=0:U-MIX44 Sound Device 1-U-MIX44 Sound Device 2
Mode=absolute
Riaa=Yes Preamp Left=37 db Preamp Right=37 db Noise Filter=0 Hz
45T=No InverseLR=No PhaseInv=No
Decalage=0 ms Time limit=720000 ms
Silence seuil=-40.000 db SNR=40 db

Config Bypass Riaa=No Preamp=0 db Noise Filter=0 Hz Input Latency=0 ms

Vinyl Stats (turntable pitch set to 0 play at normal way)
Time code percent=99.474 Volume max left=0.631 Volume max right=0.631 Volume optimum=0.370
Speed Average(100ms)=0.058 Speed Average(1s)=0.059 Speed Average(3s)=0.057


Vinyl2 connected=vinyl version 2
Audio=ASIO source=2:U-MIX44 Sound Device 3-U-MIX44 Sound Device 4
Mode=absolute
Riaa=Yes Preamp Left=39 db Preamp Right=36 db Noise Filter=0 Hz
45T=No InverseLR=No PhaseInv=No
Decalage=0 ms Time limit=720000 ms
Silence seuil=-40.000 db SNR=40 db

Config Bypass Riaa=No Preamp=0 db Noise Filter=0 Hz Input Latency=0 ms

Vinyl Stats (turntable pitch set to 0 play at normal way)
Time code percent=0.500 Volume max left=0.001 Volume max right=0.001 Volume optimum=0.370
Speed Average(100ms)=0.044 Speed Average(1s)=0.070 Speed Average(3s)=0.067


Vinyl 3 not connected
Vinyl 4 not connected

So the problem seems to be with just the laptop and the usb, when the DVS is set to phono it created a loud warble noise when stationary, when the timecoded vinyl is playing the quality and noise is perfect, also when i bypass to play records the sound quality is very poor aswell.

Any ideas?

[christiankoopmann]

Hey,

when you disable the Vinyl control and play a song without timecode control is the sound than normal? Or have you there to some bad noise?

Second: Sometimes the first seconds you have a bad sound when playing timecode vinyl and control it with DVS.

As I can see from your config report the timecode quality of deck 1 is nearly perfect above 99%. When you take the config report was deck 1 also running? because there is only a quality of 0,5%.

But the preamp is also very High. I'm not the specialist with the U-Mix44 but normaly i thing it is too high. When you are at the preferences and at the timecode section do you see the two waves (red and white) like a sinus wave?

regards
Christian

[paul53]

Hello

No bad noise without timecode vinyl, just low quality which ill look into a bit later,

I wasnt using one of the vinyls when i ran the report, sorry about that. Ive just made a video to demonstrate the issue and im uploading it to youtube for you. Can i post links on the forum? or should i send it to you in a PM

Thanks again for all your help.

[christiankoopmann]

You can post your link here. Thats no problem.

You have low quality while playing without vinyl control thats a bit unusual. But I wait to your video then mybe we can see whats realy going wrong.
Post it here then some other can see it to maybe they know something what we don't see at the moment

regards
Christian

[paul53]

Its finally uploaded!

http://www.youtube.com/watch?v=j482RUlJwC8

[christiankoopmann]

Hey,

I have a question first: Why is your input as low that you have to level up the volume to 37db+.
is it not working when the input is at +-0dB? (only a side question but it can cause these "woomble" sounds)

And nearly at the end of your video you are showing the inputs from the mixer but it was not readable for me in which input do you pluged the outputs. (i think it was the LINE IN) but if not please plug it in the LINE IN.

At the end you showed that when playing normal vinyl with bypass the sound is realy bad. This comes from the input boost you have setted at DVS. What happens when you set 0db at the inputs at DVS and enable the PHONO.

regards
Christian

[Hannes]

Hey,

Try grounding one of your turntables on the mixer, one on the U-Mix and connect both grounding posts with another.

Also make shure, your inputlevels on the U-Mix arent too high as Christian said. (Phono/line)

From the video I´d say there´s too much input or a ground problem.

regards
J

[paul53]

Do you mean on the mixer itself or on DVS? usually i have the master very low and the channels maxed for safety so i cant slip and over do the volume, is that what you mean?

Its all plugged into line at the back, sorry about the quality

Ill give the bypass another go in a bit doing what you said

The thing about it is, even after i unplug everything so there is nothing connected to the turntables/mixer anymore, even a power supply, i could take my laptop to the top of a mountain with just the u-mix44 still plugged in and you can still see wobbling on the actual DVS.

I think it must be a grounding problem with the laptop, im not to sure.

[christiankoopmann]

Do you mean on the mixer itself or on DVS? usually i have the master very low and the channels maxed for safety so i cant slip and over do the volume, is that what you mean?

Yes in DVS your inputs are boosted to 37dB+ thats to high. Ideal is a +-0dB input.

regards
Christian

[Hannes]

I´d run the calibration again, with the laptop running from the battery and the TTs grounded differently.

Also check the inputlevel of the U-Mix via the sound-prefs in windows and adjust them so nothing is peaking with the umix-panel.

regards
J