Hello
I was hoping someone could help me resolve an issue with sound quality in version 4.2
I bought some TCV's to try out with the trial version to make sure everything works the way i want it to. Sadly this is not the case, the sound quality is very bad even on the highest quality setting. It's hard to explain, but it sounds a bit choppy. I also tried the 3.4 version and with that one it sounds way better. The only way i can get acceptable sound in 4.2 is if i raise the latency to at least 1024 samples which i don't consider acceptable. I'm using a maya44 pci card, so this shouldn't be a problem.
To highlight the problem i recorded the output playing a triangle wave and here's the result.
Without TCV the sound is perfect:
http://bart.sm.luth.se/~matwii-0/vdj4.2-notcv.wav
And with TCV's it sounds like this:
http://bart.sm.luth.se/~matwii-0/vdj4.2-tcv.wav
And for reference, this is how it sounds in 3.4:
http://bart.sm.luth.se/~matwii-0/vdj3.4-tcv.wav
I really hope someone can give me a hint as to how this can be resolved
I was hoping someone could help me resolve an issue with sound quality in version 4.2
I bought some TCV's to try out with the trial version to make sure everything works the way i want it to. Sadly this is not the case, the sound quality is very bad even on the highest quality setting. It's hard to explain, but it sounds a bit choppy. I also tried the 3.4 version and with that one it sounds way better. The only way i can get acceptable sound in 4.2 is if i raise the latency to at least 1024 samples which i don't consider acceptable. I'm using a maya44 pci card, so this shouldn't be a problem.
To highlight the problem i recorded the output playing a triangle wave and here's the result.
Without TCV the sound is perfect:
http://bart.sm.luth.se/~matwii-0/vdj4.2-notcv.wav
And with TCV's it sounds like this:
http://bart.sm.luth.se/~matwii-0/vdj4.2-tcv.wav
And for reference, this is how it sounds in 3.4:
http://bart.sm.luth.se/~matwii-0/vdj3.4-tcv.wav
I really hope someone can give me a hint as to how this can be resolved
Inviato Fri 02 Mar 07 @ 2:06 pm
sbangs
try "autolatency"
in proformance options what happens?
in proformance options what happens?
Inviato Fri 02 Mar 07 @ 4:02 pm
I already did that and pretty much all other advise and tweaks i could find on this forum, but nothing has helped so far.
Inviato Fri 02 Mar 07 @ 4:12 pm
sbangs
how does the waveform look , big small?
Inviato Fri 02 Mar 07 @ 6:17 pm
Well, that depends on which waveform you're referring to?
If you mean the output when playing tcv's compared to the source, they look identical to the naked eye.
If you're implying that this has something to do with the level of the timecode signal, that is not the case. Everything seems fine there (100% quality).
In the example i posted here it sounds a bit like distortion due to clipping, but that's not what it is. I recorded a small snippet of music to try and make it more clear.
It is best heard if you listen to the guitar part.
Example without TCV:
http://bart.sm.luth.se/~matwii-0/example1.wav
Example WITH TCV:
http://bart.sm.luth.se/~matwii-0/example2.wav
At first i thought that this was caused by the vinyls was pretty warped, but since it sounds so much better in 3.4 i believe this is caused by something else.
If you mean the output when playing tcv's compared to the source, they look identical to the naked eye.
If you're implying that this has something to do with the level of the timecode signal, that is not the case. Everything seems fine there (100% quality).
In the example i posted here it sounds a bit like distortion due to clipping, but that's not what it is. I recorded a small snippet of music to try and make it more clear.
It is best heard if you listen to the guitar part.
Example without TCV:
http://bart.sm.luth.se/~matwii-0/example1.wav
Example WITH TCV:
http://bart.sm.luth.se/~matwii-0/example2.wav
At first i thought that this was caused by the vinyls was pretty warped, but since it sounds so much better in 3.4 i believe this is caused by something else.
Inviato Fri 02 Mar 07 @ 7:03 pm
After some more experimenting i think i have the problem narrowed down.
I tried installing the same sound card in another PC with the exact same results. I also tried using
the Asio Multimedia Driver which came with Cubase, and with this the sound is perfect (but not the latency of course).
My theory is that there is some sort of incompatibilty between the sound cards ASIO driver and VDJ since VDJ seems to work fine with other drivers, and the ASIO driver seems to work perfectly with all other software.
Is there anybody using the same sound card with good results?
I tried installing the same sound card in another PC with the exact same results. I also tried using
the Asio Multimedia Driver which came with Cubase, and with this the sound is perfect (but not the latency of course).
My theory is that there is some sort of incompatibilty between the sound cards ASIO driver and VDJ since VDJ seems to work fine with other drivers, and the ASIO driver seems to work perfectly with all other software.
Is there anybody using the same sound card with good results?
Inviato Mon 05 Mar 07 @ 6:37 pm
listen2
Disco_Stu if your using gen2 tcv then turn off the riaa pre amp in vdj. You will probably get a fluctuating % but it should preform without flaws, the pre amp is not need on gen2.
also
Gen3 tcv are now out and are fantastic, a little thinner and has 1 min. markers for easier cueing, definitely worth checking.
also
Gen3 tcv are now out and are fantastic, a little thinner and has 1 min. markers for easier cueing, definitely worth checking.
Inviato Mon 05 Mar 07 @ 8:04 pm
I'm afraid that didn't make any difference, but you're right that it works without soft RIAA.
The distortion i experience seems to be linked to the buffer size somehow. It's as if there's small rapid pauses in the playback which causes a fluttering sound, and the frequency of this is proportional to the buffer size.
The distortion i experience seems to be linked to the buffer size somehow. It's as if there's small rapid pauses in the playback which causes a fluttering sound, and the frequency of this is proportional to the buffer size.
Inviato Mon 05 Mar 07 @ 8:38 pm
listen2
so you have constant audio dropping? like every 2-3 seconds? what pc are you using?
Inviato Mon 05 Mar 07 @ 8:49 pm
I'm fairly sure it's not a performance issue, the problem is persistent no matter what quality setting i choose. It's an Athlon XP 3000+ with 512mb ram, cpu load is not very high.
It's not really like dropouts, i would say it sounds like extremely short glitches but not every 2-3 seconds but maybe 10 every second. It's not dramatic but it's definately audible, listen to the samples i posted and i'm sure you'll hear it.
It seems to be linked to the buffer size (latency). If i increase the buffer to 1024 samples it pretty much disappears, but that's a latency of 23ms which is not very good.
With vdj 3.4 a buffer as small as 48 samples works like a charm so i definately think something's wrong.
It's not really like dropouts, i would say it sounds like extremely short glitches but not every 2-3 seconds but maybe 10 every second. It's not dramatic but it's definately audible, listen to the samples i posted and i'm sure you'll hear it.
It seems to be linked to the buffer size (latency). If i increase the buffer to 1024 samples it pretty much disappears, but that's a latency of 23ms which is not very good.
With vdj 3.4 a buffer as small as 48 samples works like a charm so i definately think something's wrong.
Inviato Mon 05 Mar 07 @ 9:25 pm
listen2
ok so that speaks for the processor and ram but is this a laptop or desktop?
Inviato Mon 05 Mar 07 @ 9:56 pm
Desktop
Inviato Mon 05 Mar 07 @ 10:08 pm