Nimbus UHJ Releases

24 Apr

Nimbus has been the one constant when it comes to Ambisonic/UHJ releases since the insertion of the system, but although the company still releases albums using UHJ they haven’t been marked as such for some time.

Nimbus are planning to add information regarding which releases are and aren’t UHJ to their website, along with information on how they record them, but in the meantime they have allowed me to pass on this information that should help those who are unsure whether they have, or are about to purchase, is UHJ or not.

UHJ (Nimbus produced albums)

Series: 5000, 7000, 7700, 7800, 8700

Not UHJ (externally purchased/licensed albums)

Series: 2500, 2700, 6000

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5 Responses to “Nimbus UHJ Releases”

  1. Steven Dive April 24, 2018 at 11:59 #

    That’s good to know. I have Nimbus UHJ from the 1700 series as well, though I have not checked to see whether these are still available. I will have a look through the 8700s on line, now.

    It has been a little frustrating that Nimbus has not given any information about UHJ recordings in their catalogue ’til at least most recently. You never know, they might start keeping new ambisonic recordings in full B-format archives, instead of just 2 channel UHJ, or even release them.

    • oxforddickie April 24, 2018 at 12:17 #

      I have ‘Martin Jones’ box set of ‘Brahms Complete Piano Music’ in front of me ready for decoding, its number is NI 1788. All of this early series appear to have the fact they are UHJ stamped onto the CD’s because this series is quite old and obviously before the decision to drop any mention of UHJ.

      I may be talking out of turn, and hopefully when Nimbus update their website it will show more light on this, but i believe they have been recording the B-Format files and archiving them. It would make sense in doing that as they could release albums in so many multi-channel formats as and when the need calls for it.

      The obvious thing comes to mind is that we now have systems that are able to deliver height information as part of the surround set-up, just what Ambisonics has been waiting for.

      I believe it’s only the early UHJ releases where only the UHJ stream was recorded/archived, but, as i said,, hopefully we’ll get a clearer idea of what is what in the fullness of time.

      • Steven Dive April 24, 2018 at 12:46 #

        That’s a coincidence as I have that Brahms as well. But all my Nimbus CDs are stamped as ambisonic, not just the early ones, up to the 7700s. As far as I was aware from discussions on the surround@music.vt.edu mailing list (hosted at Virginia Tech), and maybe the ambisonics discography site, Nimbus had until now or recently only kept the UHJ archived, not full horizontal (3 channel) B-format, let alone spherical. They had or have a few G-format releases on DVDA but these were definitely decodes from UHJ and not from B-format. Do you know whether Nimbus is now actually archiving in full B-format and from what date?

        Maybe Meridian can be prevailed uopn to add a height capability to their, admittedly costly, DSPs in future. At least they have maintained ambisonic UHJ and horizontal B-format capability within their whole DSP range since about 1995 (the models 565 & 568). I’d love to see at least a 2nd order ambisonic decoder appear for home use. Otherwise it’s a matter of using software solutions and sound cards, which can become both expensive and not really user friendly. I can feed B-format to my Meridian box but I had to source an 8-channel asynchronous USB (miniDSP UDAC8) to link my Mac to the decoder.

        Maybe if you are curious about curent work in ambisonics then subscribing to the VT surround list may be worth a look.

        • oxforddickie April 24, 2018 at 16:41 #

          Hmm, that is odd, i’m sure i read something about how they store their recordings a few yesrs ago, but yhe memories not what it was. Hopefully we’ll have all of our questions answered soon.

          I feel it’s long over due that the manufa turers of A/V equipment ditched some of the hardly used DSP effects from their amps and replaced them with an Ambisonic decoder.

          It would do a better job at synthesizing a surround field b etter that any of those DSP effects plus it would give access to the growing amount of Ambisonic material that’s appearing, be it 1st, 2nd or 3rd order.

          • Steven Dive April 24, 2018 at 18:24 #

            Well, there may be a few spluttered protests if all those DSP effects disappeared all at once. I agree, though, strongly with you on the abilities of ambisonics to present a better than stereo experience. I wonder also whether the 2 channel version of UHJ itself would have been better if stereo compatibility did not have to be designed into it. But maybe this compatibility only meant tighter component tolerances were needed for the phase amplitude matrices.

            As for manufacturers ditching ‘features’, the market drives these decisions. Oh well. In turn, people have to be aware of what’s available, material to play and equipment needed. Chicken & egg. But there are more ambisonic microphones appearing as well as material to hear. The Octamike (aka octathingy) has just arrived. Someone’s taking notice.

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