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Anyone have ANY concrete idea of the Sample Rate of Dishnetwork using the optical out?
I strongly suspect it is 32kbs.
However, after a phone call to tech support (add laugh track) going to the 2nd level, I got NO joy.
In addition, I got a stock answer from the write-in support that 'the information is NOT available'.
Come on, now. SOMEBODY knows at Dish. I mean, when they commissioned the receiver to be made, somebody wrote the spec. It would take somebody 30 seconds to write an e-mail up the line and ASK.
Could it be some kind of State Secret.....like California's Budget? Or even MORE important. A Cosmic Hot Secret.
I'm upset that this info is not readily available.
My reason? Simple. I just bought a DACMagic+ which has frequency readout. The USB? Goes to 192k. PS3? 44.1 or I can force an upsample. The menu is detailed and a PIA. But the small dish? Blank....This implies a 32k sample rate.......
IF my DM+ is broken I'd like to know sooner than later...
thanks for reading my latest rant...............
Too much is never enough
Follow Ups:
I called Dish for a tech spec on a receiver (can't remember what) and tech support couldn't answer the question. It, too, was something their engineers would know because someone designed the receiver. This is the problem with living surrounded by Philistines who just love the sound of music on their mp3 player and cell phone. Don't ask questions! Just take the latest tech toy and use it.
Again, I am sympatico (sp?).
These satellite channels are terribly compressed. The operator allocates bandwidth to each channel as desired, e.g. music channels get more bandwidth than talk channels. This has nothing to do with sample rate, just like a 128 kB MP3 is no match for CD quality even though it has the same sample rate.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
I need to know output sample rate to determine if my DAC is operating correctly.
IF output = 32k, than I'm probably OK.
IF output = 44.1 or greater, I have a defective frequency display........
I know the quality of small dish is compromised...... I thought maybe equal to MP3-320 or so, but apparently closer to MP3-160.........
Too much is never enough
I'm sorry. There was some confusion, and I responded to a different post, commenting on the broadcast encoding, rather than the PCM sample rate output by the receiver box.
I would bet that if your DAC says 32 kHz it is working correctly. It is unlikely that you would be hearing anything at all if the sampling rates differ. While it is possible that the output display is incorrect, that seems unlikely, since that would be one of the first things to be debugged during product development.
You could possibly test the DAC by connecting it to a computer sound card or other TOSlink source and see what happens at different rates. It may be that you could also have the computer receive the output of your Disk network converter box and get an alternate opinion on the sampling rate. I haven't ever used Toslink, just coax SPDIF and ST optical, so that's why I write "possibly".
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
Therein lies a tale:
The displayable frequencies, by dedicated LEDs is from 44.1 to 192 in the usual 5 steps, including the oddball....to me, at least, 48K.
But the DAC is good down to 32k, which doesn't have a LED.....
So, since it is working off the small dish, I have 2 choices. Display doesn't OR the DishNetwork 722k outputs 32k.
Dish simply won't disclose this information for reasons which are WAY above my pay grade, though I suspect national security implications. I'm going to find a hardwired snail mail address and try once again. I may make this my new career. What a bunch of *&(%$#.
The PS3 is another story, and I'm still trying to figure THAT one out, though I have gotten it to display frequency. You have several choices here, including a few HDMI options for good measure. I ask for ONLY LPCM since I have no desire or means for any of the outputs beyond 2-ch. The list, including ALL the audio choices goes on for a couple pages, with the 2-ch stuff having maybe 8 or 10 'tick' boxes.
to Dish:: If I ever find out, I'll try to keep your secret. I know how important this must be to you guys, to have such meaningless to 99.9% of everybody information 'in the vault'. So, please just send it off and I promise not to tell anyone.
My Confuser, VIA USB indicates 192. This is from a USB 2.0 feed via a pair of 15' cables WITH repeaters. Maybe I'll drop it back to USB1.0 and see if the sampling rate drops to 96? That would give me some confidence, no?
At the DelMar Fair, yesterday, I spoke briefly with a Dish sales guy who was, while sympathetic, no better informed than I. I don't know if it's possible to output 5.1 via optical while maintaining a mere 32k rate.
And while the radio sounds fine, especially for intended use, I was kinda' hoping for something which was basically FM frequency response at what amounts to less resolution.
Too much is never enough
"At the DelMar Fair, yesterday, I spoke briefly with a Dish sales guy who was, while sympathetic, no better informed than I. I don't know if it's possible to output 5.1 via optical while maintaining a mere 32k rate."
You are confusing data rate with sampling rate. After reading your posts and based on other (general) knowledge that I have it is virtually certain that the sampling rate output of your Dish Network box on TOSLINK is 32 kHz. I don't know how many bits, but it seems unlikely to be more than 16. The data rate would be the product of the sampling rate, the number of bits per sample, and the number of channels, multiplied by a small overhead factor.
TOSLINK is basically a fiber optic implementation of SPDIF, albeit limited in the higher sampling rates. See the following, which lists 32 kHz as DSR. I had a Proceed DAC back in the early 90's that worked at 32, 44.1 and 48, and the 32 kHz rate was described in the manual for broadcast digital audio.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
See my other post for answer:
Yep, agreed 32k is about a 99.9% chance of being 'it'. The .1%? IF the dish 'engineers' decided to write there own book while reinventing the wheel. The receiver uses off-the-shelf parts / tech and would cost 1000$s if proprietary tech.
As for bit depth? Another problem for another time. Again thinking off-the-shelf, 16 would be logical.
As it is, the small dish 'radio' is fine for casual listening and while doing house or yard work.
And to reiterate, my only concern is that the display on my DAC is ok.
Maybe I'll borrow / beg a processor from the local guys and do a test.....
again,
Thanks:
Too much is never enough
Yes, I see from the table...when i finally got there, is 32k is pretty much FM quality and will have a max frequency (that pesky Nyquist thing) of about 15khz, the same as FM with the 19KHz pilot tone.
As for bit depth...the number of discrete values? I don't know. 16bit seems fine for home use while other more ambitious forms exist. My original player was 14 bit, so you know how long ago THAT was!
Good link...and I'll mark it down for further reading. I see several articles of immediate interest which will take some time to get to.
.........
Too much is never enough
See if you can borrow a DAC, AVR or processor with the ability to display the sample rate. I built a DAC some time back that had a 32kHz LED indicator as well as LEDs for LOCK and EMPHASIS but that was way back when I cared about such things.
Kal
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