Topic: Iriver optical sampling question (was "Recomended build for optical ...")

[divamum]

Hi y'all -

I've been using an older Rockbox build (from about March, I think) but I now need the optical feature so... Can anybody recommend one which has been stable for them? (link to a d/l app'd if you have one).  The older one I've been using has been fine, but I DID have problems with a couple of builds when I first set up the firmware, hence why I haven't been too keen to change it, and why  I'm asking here for one which somebody has used successfully for a while rather than just going to Rockbox and linking off there.

Tia!

[divamum]

Bumpitity bump - anybody?   

Which builds are folks using at the moment and when did the optical become officially adopted (assuming it has been made "official")? 

Ok, off to go search (again - I promise I looked before I posted, but itwould'nt be the first time I've missed the blinding obvious, so apologies if I'm doubling up on something I missed!)

[aberg]

I'm using a build from November 14th without any issues at all.

[petur]

You're always welcome to give the latest build a good test. I will do this tomorrow anyway as I have a gig to tape at night

[knoxmallette]

I'm using the 12 September 2006 build and have had no issues.

[divamum]

Thanks guys - just the kind of info I need.  Am I right in thinking that optical-in is included in those and not a patch?

Where are the older releases available? They only seem to go back about a month on the Rockbox site as far as i can tell...  Tx!

Petur, my problem is that I can't really risk taking an "unproven" build on a test run for these gigs - I'm already running optical for the first time now that i've got the Core 2496 and so am trying to minimise problems elsewhere in the chain!  But thatnks... maybe I"ll play around with that one when I have time for a few more test runs...

[aberg]

Nov 14th has optical built into that build.. everything runs great. I'd suggest it.

[divamum]

Thanks Berg - I'll give it a try.  Any tips for a newbie to optical?  Thanks!

[612]

Thanks Berg - I'll give it a try.  Any tips for a newbie to optical?  Thanks!

I think I'm still using one from the end of July without problems and I record optical. Should probably update though.

Not sure what tips you are looking for re: optical but I run this cable out of my UA-5 into my h120, just make sure the Source is set to Digital on the h120. I'm not familiar with the Core2496.

http://www.mcminone.com/product.asp?catalog%5Fname=MCMProducts&product%5Fid=24%2D6475

[divamum]

Tx.  I seem to recall reading that there was a glitch where you had to boot up then plug in or somesuch - not sure if that's still a problem or not. Also, presumably I just set it to 16/44.1 on the Core and let the iRiver "read" that, or do I have any other adjustments to make on the iRiver itself (since I hvaen't got the firmware loaded yet, I'm not sure what's in there!).  I guess I'm wondering about any tripwires so I can get my settings straight and out of the way before screwing it up in some new and unusual way anyway

DM (the Girl Who Has Forgotten that "Standy By" is NOT the same as "Record" too many times, regardless of how pretty the level meters look..... )   

[divamum]

Ok, got 14th November loaded, all seems well.

Question:  if I'm running optical and setting levels on the external pre, what level should the iRiver be set at - 0?  Or -X? 

Thanks!!

[Ryan Sims]

That level on the iRiver, best I can ascertain, is only the volume to the headphone and line-out jacks; it has no impact on the recording levels.

[cgrooves]

The h120 is limited at 16 bit, so even if you feed it a 24 bit signal it will just truncate it down 8 bits.   It will record at whatever sample rate you send to it automatically.  When running the h120 digital in, the internal pre (gain stage) is bypassed, so there is no 'level' setting to worry about on the unit itself.  Just watch the levels on the screen and do your adjustments with the external pre.

[divamum]

Thanks - since that level meter was there with the option to adjust it I couldnt' figure out quite what was waht since it was obviously responding to the adjustments on the pre.

Next question (I posted this in ask the tapers, but it bears repeating here in an iRiver-specific thread too):  Okey dokes...

I ran a test last night - mics and pre are talking, there's a signal, batteries fresh etc.  However,   it came out like the freaking chipmunks on steroids - clearly running fast (it's pretty funny, actually) - and when I u'l'd it to the puter it was telling me it was 64k instead of 44.1 that was set on the Mic2496.  How did the sample rate get screwed up?    The iRiver told me it was "same as source" so I can't figure out any way of setting it specifically.   Also, I can't get it to repeat the fault - my concern, of course, is that if I don't know what caused it I don't know how to avoid it so any pointers on how to ensure this doesn't happen again warmly welcomed!  Thanks.

 

[cgrooves]

The 'level meter' adjustment you are talking about on the iRiver is just the headphone output (monitoring) level.

I think the wav header is messed up on the recording, causing it to play at a different sampling rate.  You'll have to search the threads to make sure that's the problem & find out how to repair it.

Good to hear that you can't repeat the error.  I've never had my h140 record anything but the same sampling rate that I sent it via the optical signal.  Did the recording screen say 64k instead of 44.1 when you were recording?

Good luck!