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#1561763 - 02/10/18 11:05 PM digital coaxial lock?
I_CaneFire Offline
Planeteer


Registered: 01/29/13
Posts: 136
Loc: Maryland U.S.A.
Hi All,
I just finished a recording session. I learned something about the VS2480 since I had never tried what I am about to state to you all, before.

In the past I have digitally connected my VS2480 to a VS2000 through SPDIF and it worked great. If I disconnected the main VS2480 that was digital out and then played the track on the VS2000 it was fine.

Tonight, I tried this with my two VS2480s. I find that I have to keep both units on for the track that was recorded to play properly. When unit 2 (with the recorded material) is digitally unlocked (thus running on internal time) it is now in the wrong pitch. In one case it was sped up.

Mind you the tempo map was the same on both units. THe only difference was that unit one had music recorded at 16bit 44.1 khz(digital out unit). Unit 2 (the digital in unit) is set at 24bit 48khz.

To make it sound right I had to turn on Unit 1 and make sure the digital clock in Unit 2 was locked in. Then the tracks would play correctly.

Will I always have to do this? Or is there a way to make unit 2 have the time correct?

Just when I thought I knew almost everything about the VS2480.

Thanks,
Ian


Edited by I_CaneFire (02/11/18 07:24 AM)

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#1561767 - 02/11/18 12:22 AM Re: digital coaxial lock? [Re: I_CaneFire]
uptildawn Online   content
Planeteer


Registered: 12/15/01
Posts: 7987
Loc: Iowa
In order for the two units to play correctly and independently, they must have the same record settings - if you want 48k, then they must both be set to 48k and vice versa if you want 44.1k.

Unit 2 plays the right pitch and speed when locked to unit 1, because unit 2's sample rate was being controlled by unit 1 while you were recording tracks to it (unit 2).

If you want unit 2 to play at the right speed/pitch when you turn off lock with unit 1, then make sure the project in unit 2's sample rate is the same as unit 1's before you even sync them up.
_________________________
uptildawn

2013 Iowa City JazzFest sets!
Dr Lonnie Smith Trio w/Jonathan Kreisberg on guitar
Pharoah Sanders Quartet
Fred Hersch Trio
These are post mixes set to single camera video (by Rich Rauch).

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#1561788 - 02/11/18 07:29 AM Re: digital coaxial lock? [Re: uptildawn]
I_CaneFire Offline
Planeteer


Registered: 01/29/13
Posts: 136
Loc: Maryland U.S.A.
Thanks Uptildawn. I appreciate it. It just happened to be that the music recorded in my 1st VS2480 was at 16 bit 44.1 khx. All of my newer recordings are done 24 bit 48khz because I find it sounds significantly better.

Cheers,
Ian

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#1561838 - 02/11/18 01:55 PM Re: digital coaxial lock? [Re: I_CaneFire]
wjgypsy Offline
Planeteer


Registered: 08/27/12
Posts: 283
Loc: Athens, GA
I like recording at 48/24 too. Perhaps you could upsample your 44.1 stuff to 48 and import back into your VS?

Edited by wjgypsy (02/11/18 01:56 PM)
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