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HD.6X Pro In Depth Review:










Craig Anderton HD.6C Pro Review



HD.6X Pro MP3 Clips

By Craig Anderton

But words ultimately fail in describing this guitar, because you can't imagine what it does if you haven't heard it in action. So here's the story on the clips:




This is the "NIN bass meets Andy Summers chorus" I alluded to earlier. It's a tough, gritty sound that shows some of the guitar's "split" capabilities.





This reminds me a lot of the old Roland GR-300 sound. This was obtained simply by plugging in AudioDamage's FuzzPlus 2.2. into Sonar's FX bin for each string.




This is just a pretty sound with chorus on each string, as well as delay.





This is variation on the above, with a little more resonance added to the modulation.





A little synchronized delay can really add "animation" and interest to the sound.





This is a fairly complex patch. All six strings feed into an aux bus that terminates in a Guitar Rig 2 distortion sound. The bottom three strings feed a second aux bus that terminates in another instance of Guitar Rig 2, loaded with a synth-type filter and an "analog," tempo-synched step generator. Finally, a little bit of the straight sound of the bottom three strings is mixed in for a little more definition.





This is actually just a simple hex power chord, but processed within Sonar to add enveloping/synched effects.





Each string has a resonant filter with slow LFO, and they're all summed together to make a big, moving, animated filter sound.



Craig Anderton HD.6X Pro Blog





DLP Overview


The Magic Network


Hardware vs. Software


Drumming With HD.6X Pro


Watch them all here:





HD.6X Pro and the Bose L1


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Thanks for posting all this in one place -- some I have seen before, some not. Telling might be that Craig hasn't made a blog entry in about 18 months. I also found his comment that MaGIC was designed for the future of music networking (as Spock would say) "interesting".


Thanks again,



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Well, I went back to the archives and got caught up on some of the interesting Dark Fire/Gibson Technology/HD.6X post -- good stuff. I signed up way back when I got the HD, but since there wasn't much activity (for the HD), I lost track of it. Also, for the record, I have emailed Craig a few times and posted to his forum on Harmony Central, but have never received a reply -- but in fairness, I was usually asking about a direct digital interface for the HD, for which, apparently, there is no answer.


So along those lines, as my quest continues, it appears the HD uses Altera chips (BPGA and processor) --




However, I can't seem to confirm anything after this press release (yes, I emailed Altera, no response yet.)


After reading the MaGIC specs, the guitar seems more evolutionary then revolutionary -- the MaGIC idea is really to put a music network on top of standard (computer) networking protocols. But right up front the spec states --


3. Complete digital solution:


Existing digital systems rely on archaic analog interfaces to connect with other

devices. The increasing demand for interconnected devices has resulted in diminished

sound quality, caused by repeated analog-to-digital and digital-to-analog conversions.

These conversions often lead to prohibitive size and power product requirements and

create a situation that begs for a universal end-to-end digital solution.


So what happened? I've worked enough software project to smell a work around, and BoB looks like that. I find it hard to believe HJ would give up on this without some serious problem they aren't discussing. My best guess is that it is the latency problem -- at least trying to do it for all 32 channels. Don't know if anyone stepped back and just tried to do it for the 6-8 needed for the guitar. Seems like this should be doable since Firewire and USB interfaces can handle it (but then, they aren't bidirectional either. )


If anyone (who ever reads this) knows anything or is interested in discussing it, I would sure be interested in discussing it. Better than getting a packet analyzer and trying to reverse engineer this thing only to find out three years down the road -- oohhh, so that's why it wouldn't work:-)





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Steve --


Have you ever tried splitting the string outputs from BoB -- one going to the computer inputs and one going to (say) a RMC Fanbox and then to a synth device (eg, Roland VG-99)? There would be a 3 dB loss across the split, but I would think you would still have an acceptable signal for drive both paths.



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Seven years! You are an early bird (I read about your Apple II and Mac days -- with me, it was NeXT.)


But you do have a Dark Fire, so maybe you can answer this -- how do the six independent string signals get from the guitar to the RIP? From the docs, I only see a 1/4" RTS input jack for the guitar -- how does it convert this to the Hex output? Also, they mention a custom cable here -- don't they use the standard 13-pin DIN (Hex) cable?


I know -- DF questions, but I ask in my never ending HD interface quest:-)





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I got a reply from Cirrus -- it appears all work related to MaGIC was stopped in favor of CobraNet. Doesn't look like anyone there (at this time) has any knowledge of MaGIC.


So, for now, looks like I am at a dead end. Might go on another realtime DSP project in the near future. If I get access to a packet analyzer, I might play around, but looks like the (RMC) Fanout and BoB are my best options for now.


If anyone comes across this thread and has knowledge of unpacking MaGIC packets on a FPGA, I'd sure like to hear from you.



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Bulk of early Magic was done in partnership with Xilinx

then they shifted to Altera in 2004


Cirrus would always be viewed as the competition, since they own Peak Audio's Cobranet since 2001


1999 Gibson's GIMIC / MAGIC Media-Accelerated Global Information Carrier Specification



2003 Gibson / Xilinx - CES Best of Show Award for the Gibson MaGIC true-digital guitar. (1st generation)



2004 - Gibson drops Xilinx - goes with Altera Cyclone



2005 Gibson HD6X Pro - Digital Guitar (2nd generation)





2007 Gibson recruits Craig Anderton to road test latest HD6X Pro Digital Guitar





this may be a path for more info:



* To: "'avt@ietf.org'" <avt@ietf.org>

* Subject: Re: [AVT] What a shame these guys seem to have never heard of RTP

* From: "Flaks, Jason" <JSF@dolby.com>

* Date: Thu, 13 Dec 2001 10:24:35 -0800

* List-Id: Audio/Video Transport Working Group <avt.ietf.org>

* Sender: avt-admin@ietf.org




Interestingly enough I worked on the original specification for MAGIC

(www.gibsonmagic.com) which was then called GMICS (about 2 years ago). At

the time of development we were unaware of RTP as an option. There were

applications out there for professional audio over IP, but the latency

involved was far high for live performance. MAGIC really just uses the

Ethernet physical layer. Packets are sent at the sample rate, and network

induced jitter is resolved with a PLL. In the end, it will be a miracle if

they ever find an Ethernet cable that can handle the abuse of the road

anyway, but perhaps an implementation of live audio using RTP/UDP/IP over

1394 or USB would be interesting.


-Jason Flaks

Dolby Labs





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Thanks Steve --


I have pretty much email anyone whose name appears with "Gibson" and "MaGIC". It appears Gibson was changing chip manufacturers every year -- the last I have (2005) is Cirrus --




This (joint?) venture seemed more aimed at large scale (musical) networking involving CobraNet and Magic. I was hoping someone there might have programmed a chip for unpacking MaGIC packets. If they did, it seems lost now. Maybe these changes (in chips) were a result of no one successfully programming MaGIC into their chips, but it exist in some level in BoB so you would have thought Henry would have had some pure digital interface made (at least just for the guitar channels) just for the "wow" factor, but no such luck.



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I have pretty much email anyone whose name appears with "Gibson" and "MaGIC". It appears Gibson was changing chip manufacturers every year -- the last I have (2005) is Cirrus --



Man - no wonder it died!




Cirrus is Cobranet - and they are intent to Kill any competing Ethernet digital audio transport protocol






oh well

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Yes, CobraNet is a ethernet protocol for send digital audio (packets), so not sure why there would be any association with Gibson's MaGIC.


Maybe I can program the HD.6X FPGA for CobraNet instead of MaGIC, of course, it would involve a can opener (since the chips are sealed in a metal box;-)



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