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This looks like a good card (but you cant tell for sure until you get it onto a scope), I certainly like the optical output which supports 192Khz which will be excelllent for out forthcoming experiments with DMPX.
The main thing that concerns me is the quoted frequency response figures for the analog outputs which is 5hz to 40Khz. This may well give low or even zero tilt (unlikely though) but 40Khz frequency responce is way short of what we need for a linear mpx response, we need ideally 60Khz of analog frequency response.
Even if these figures are a conservative estimate, there may very likely be a roll off before the required 60Khz is reached. If it falls a little short, this can be adjusted for but if it does start to roll off at 40Khz, that’s a big problem.If I decide to get one of these for my DMPX trials, I will thoroughly test the analog too and report back.
I see the issue with the E-MU 0404 now, 96khz only on the digital outputs.
The ESI (Maya and Juli@) card do 192 on the RCA output so might go with one of these.
Does anyone know of a reasonably priced card which will do 192 on the optical?[quote author=”sigmacom”]
Well, it seems you’re lucky! 🙂 It provides:
– 1 digital electrical interface: XLR connector (selectable Unbal.75 / Bal.110 Ohm)
– 1 analog electrical interface: XLR connector (selectable Unbal.75 / Bal.110 Ohm)
– 1 optical interface: F05 connector (Toshlink – 5 mm)It recognize AES3 and S/PDIF at any input (electrical or optical) up to 192k.[/quote]
Excellent! it covers all bases, some may have preferred an RCA (phono) interface for the electrical inputs but this in my mind would not be appropriate for a product with which we are aiming for "better than pro" results.
I’m personally going to most likely use the optical interface as my Emu-0404 has optical outs and I feel this should be a better interface than electrical. I also like the idea of having electrical isolation between the PC and the TX.[quote author=”sigmacom”]
Beside the D-MPX input, will also have analog MPX input, as some people requested.
I disagree with that, and I suggest to use D-MPX of course…
[/quote]Sigmacom, which standards of digital input are you planning to include? Optical SPDIF, Coaxial SPDIF, AES/EBU?
To please everyone, you will most likely need all 3 but I would suggest that consumer optical would be the most commonly used.Really looking forward to trying the prototype.. 😀
If you are even a little competant with electronics, you should easily be able to bypass the L/R input section and built in stereo encoder and convert this to an mpx in. If you could post pics of the circuit boards I could most likely tell you where to connect mpx input which will give you 10x better quality than the build in coder. The beauty of breakaway is the stereo encoder and clipping which you don’t get if you use the L/R inputs of your transmitter, also theres virtually no way to run RDS.
Wow, thank goodness for that, I DID find a workaround myself for this seemingly unresolveable issue but it was expensive.
I was installing secondary Soundblaster cards and using the record in and virtual record bus from these cards instead of using the Breakaway pipeline. This fixed the stuttering issue as the Pipeline (VAC) was not being used for the input device. It seemed that it was on the input where it was happening as the pipeline would work fine for the L/R output for webcasting.[quote author=”yorkie98″]
Also, download Leif’s Torture test files, these are all songs picked to present problems to processors and to show that breakaway handles this (With the exception of "Thank U" by Alanis Morrisette 😉)[/quote]I’m so Dumb, I just worked out that the OP was Leif!!… 😳
Another great song to try is "It’s oh so Quiet" by Bjork. It’s great for it’s very sudden volume changes and high frequency attacks when the band kicks in after the quiet periods. Also some of the quite periods have a hard to manange acoustic bass and xylophones.
Again, the dynamic range transitions are handled excellently with my usual setup of the plutonium preset with speed backed off to 20.This has been discussed at length in this thread: viewtopic.php?f=5&t=716
It’s unlikely that any extra controls will happen.Wannadies – You and me song, huge differences in dynamic range within this song handled with respect by Plutonum.
Also, download Leif’s Torture test files, these are all songs picked to present problems to processors and to show that breakaway handles this (With the exception of "Thank U" by Alanis Morrisette 😉)
X-Fi XtremeMusic does work fine, just be sure to download the drivers from the web and in the creative control panel, turn off all FX, EQ etc otherwise it will be locked in 48Khz mode. Audigy 4s also work well too.
If you are using a cheap (such as a realtek onboard) soundcard, you will often find them very intolerant to high line level inputs and when these clip, they clip very harshly. Even a reasonably modest soundcard (such as an Audigy) can handle high line input levels better and don’t have that sudden all-or-nothing crackly clipping like the realteks. Bear in mind that if you are using balanced (+4dB) outputs on your mixer, this is much higher than the consumer (-10dB, 0.75mv pk-pk) inputs that most soundcards can handle. Like leif said, you may need to attenuate the output from the mixer if you have no option to use a consumer level output on your mixer.
Also remember that turning down the input level in the PCs mixer does not often solve this as if the input level is too high, you are clipping the pre-amps on the input at the point of entry and nothing will get rid of the clipping, except for input attenuation.@ Sigmacom, I would most certainly be interested in trying out a prototype I would be able to use it in a real environment and report the results. What kind of output power would your exciter generate?
Sigmacom.. If you can make an exciter which will take 192Khz digital mpx input (compatible with Breakaway) I will upgrade upwards of 20 client transmitters immediately!
Leif, if this exciter is possible, the need for your IP STL program will become IMMEDIATE!! and I’m sure you will have a huge incentive to develop it quickly so you can try it. Imagine…. Digital audio source, Breakaway processing, digital audio and mpx all the way through the chain, digital mpx into a DDS exciter!! Imagine the seperation, Imagine the SNR!! Viva La Revolution! FM finally joins the 21st century.
We could totally be amongst the first to implement this tech and have world beating audio!
