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Gear / Technical Help => Recording Gear => Topic started by: datbrad on January 21, 2008, 02:34:57 PM

Title: Which recorders resample digital inputs?
Post by: datbrad on January 21, 2008, 02:34:57 PM

I have seen some folks asking if the digital in on the new R44 resamples the input and I was wondering how common it is to have a digital input that does not lock on the clock of the outboard A/D's digital signal and simply write that digital stream to a wave file. I have never seen that question asked rergarding PMD671/HD-P2/7XX recorders, so I am curious. Anyone with definative knowledge, please chime in.

Title: Re: Which recorders resample digital inputs?
Post by: Shawn on January 21, 2008, 02:36:04 PM

the R4 standard resamples. the r4 pro does not.

Title: Re: Which recorders resample digital inputs?
Post by: datbrad on January 21, 2008, 02:57:51 PM

So this is an issue specific to just the R4 standard? In other words, a digital stream into a PMD671/HD-P2 is not resampled?

Title: Re: Which recorders resample digital inputs?
Post by: twatts (pants are so over-rated...) on January 21, 2008, 03:01:30 PM

I've found with my P2, I can have it lock onto the outboard clock, or I can set it to a specific clock and have it record/convert/whatever at that "rate".

I record digi-out from the TiVo's SPDIF all the time (VH1 is good for that).  Sometimes, I record the 16/48 it puts out and go 16/48>16/44 with Audacity.  Other times, I just set the recorder for 16/44 and record. 

Seems to work just fine both ways, but I'm sure having the P2 resample something isn't a good idea.  But who cares, I'm taping crap off the TiVo (Peter Griffin's "Can't Touch Me")...

Terry

Title: Re: Which recorders resample digital inputs?
Post by: willndmb on January 21, 2008, 03:24:10 PM

is resampling bad?
how does one tell if it is resampled?

Title: Re: Which recorders resample digital inputs?
Post by: datbrad on January 22, 2008, 09:15:28 AM

I don't know that you could actually "hear" that a signal was resampled, but I expect there are computer tools to compare the data that could detect it. Bottom line, the measure of a good "bit bucket" is having a bit perfect capture of the digital signal as processed by an outboard A/D into the recorder.

Title: Re: Which recorders resample digital inputs?
Post by: taper420 on January 22, 2008, 10:05:42 AM

minidisc recorders resample the digital input

Title: Re: Which recorders resample digital inputs?
Post by: petur on January 22, 2008, 05:22:25 PM

FYI, optical input on iriver h1x0 (with rockbox of course) is not resampled

Title: Re: Which recorders resample digital inputs?
Post by: easy jim on January 22, 2008, 05:46:41 PM

The UA-5 also resamples the s/pdif input like the standard R-4