Cool thing they have there. Don know about tools though, but the heavy lifting is done if they provide drivers, and its free of NDA's .
The price is right as I told earlier, hehe, the question is , is bit perfect nature important at all? Hell, even noise shaping means "bit shaping", any audio processing chain is full of it. (Just to burst another marketing bubble
)...
Good quality ASRC's can't be identified even after 15 "loops" , as double blind tests done by Benchmark (ad1896) shown.
Oh, and seems you should arrange a group buy.
The price is right as I told earlier, hehe, the question is , is bit perfect nature important at all? Hell, even noise shaping means "bit shaping", any audio processing chain is full of it. (Just to burst another marketing bubble
)... Good quality ASRC's can't be identified even after 15 "loops" , as double blind tests done by Benchmark (ad1896) shown.
Oh, and seems you should arrange a group buy.
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Why would it be lifting bits?
The code is provided...
Linux driver will come, one day. At least I hope. It is a standard, after all.
If only I worked more on my DAC. It would have been ready today. And I would have implemented this solution in it. I'm getting late on technology, Sabre DAC is no more new, etc... Too bad, as I wanted to add the "pro audio products designer" to my "live sound engineer" job. Schematics, half drawn pcb etc... on my computer, for the dac and for some other stuff. Just waiting for me to take a week or two to finish it. Too bad.
Maybe next time. I should stop losing my time with women who don't deserve it >_<. (sorry for the out topic rant)
The code is provided...
Linux driver will come, one day. At least I hope. It is a standard, after all.
If only I worked more on my DAC. It would have been ready today. And I would have implemented this solution in it. I'm getting late on technology, Sabre DAC is no more new, etc... Too bad, as I wanted to add the "pro audio products designer" to my "live sound engineer" job. Schematics, half drawn pcb etc... on my computer, for the dac and for some other stuff. Just waiting for me to take a week or two to finish it. Too bad.
Maybe next time. I should stop losing my time with women who don't deserve it >_<. (sorry for the out topic rant)
What happened to ESS is that people are puzzled by the NDA's and their marketing scheme. 32 bit stereo ADC, wow
Not that its old, its rather new, but people dont want to subscribe to Hyperstream™ (as it was some interstellar radio channel...) , despite the orbital heights of marketing, especially pro audio people are like, hey, I spent 1000 usd last time for this benchmark dac, now leave me alone for next 5years...
Some are the same people who were into things like NOS and still are .
You can't tell these people that here is the new king, its called 8bit 80mhz .
Not that its old, its rather new, but people dont want to subscribe to Hyperstream™ (as it was some interstellar radio channel...) , despite the orbital heights of marketing, especially pro audio people are like, hey, I spent 1000 usd last time for this benchmark dac, now leave me alone for next 5years...
Some are the same people who were into things like NOS and still are .
You can't tell these people that here is the new king, its called 8bit 80mhz .
Oh you French are all the same - can't leave those Belles alone
(I don't blame you, some of the nicest looking women in the world, next to the Irish )Edit: I agree, the NDA is idiotic (not to mention the price!) & will eventually/ is currently killing their sales!
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Ft2232h
I tested FT2232H (FTDI's 480Mbps device) 60MHz syncronous FIFO's speed.
55,603,200 Bytes file was sent in 4.094456sec = 13,589,123 Bytes/sec.
(at least. by 4096 Bytes packet)
192x24x16ch will require 16*3*192*1024 = 9,437,184 Bytes/sec.
So, by these components "maybe" you can output 192/24 I16S signal from PC.
(1. hardware, to buy) FT2232H module
(2. hardware, to buy and VHDL) FIFO to I2S distribution FPGA. example, Multi Channel I2S Output, to be modified to keep frame sync
(3. software) some program, read ASIO and write to this FIFO.
(4. package software) ASIO router like E-MU Patchmix
FPGA will have single central Clock, and should supply 192KHz sync Clock to EMU board and PatchMix.
(I'm working with other project so I cannot make it, about couple of months)
I tested FT2232H (FTDI's 480Mbps device) 60MHz syncronous FIFO's speed.
55,603,200 Bytes file was sent in 4.094456sec = 13,589,123 Bytes/sec.
(at least. by 4096 Bytes packet)
192x24x16ch will require 16*3*192*1024 = 9,437,184 Bytes/sec.
So, by these components "maybe" you can output 192/24 I16S signal from PC.
(1. hardware, to buy) FT2232H module
(2. hardware, to buy and VHDL) FIFO to I2S distribution FPGA. example, Multi Channel I2S Output, to be modified to keep frame sync
(3. software) some program, read ASIO and write to this FIFO.
(4. package software) ASIO router like E-MU Patchmix
FPGA will have single central Clock, and should supply 192KHz sync Clock to EMU board and PatchMix.
(I'm working with other project so I cannot make it, about couple of months)
Attachments
Strange, this whole thread without a mention of TG-Link (that I could find). Like it or don't like it, it is at least an attempt to do it right. Basically I2S on an RJ45 connector. Seems like it should at least come up for discussion. What are its strengths and weaknesses?
I know only one sound card that outputs the format (SndScape Cinema) but it's a decent card and doesn't cost a lot. Even has a nice BNC spdif output. Worth mention, I would think.
I know only one sound card that outputs the format (SndScape Cinema) but it's a decent card and doesn't cost a lot. Even has a nice BNC spdif output. Worth mention, I would think.
Thats odd because:
1. despite i2s, its only as good as the source.
2. i2s can't really be longer than half meter
3. how good is a source thats fed by computer psu (including its clock)
4. your only "win" is the glueless interface, therefore its cheap, but reclocking is still necessary, and short length is like shooting yourself into the foot
seems like some audiofolk pushed this http://www.cryo-parts.com/zhaolu.html, even convinced chinese that this the way it should be done , hah!
No. The way is async, or if you want something really cool , a firewire soundcard with wordclock / dummy wordclock over spdif. FW can sustain any load.
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Yes, but then you are also comparing 200ps jitter with 15ps . Also , the oversampling won't be the same either. You should compare with 88.2 / or 96khz source format. So , oversampling differences are rendered insignificant.
15 loops means theres no noticable degradation caused by the ASRC chip, as some journalists predict that the jitter / amplitude tradeoff is inevitably wrong.
That trade-off is already swamped by the noise shaper in the sigma delta chip , I beleive.
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1: Quite true, of course. But just how "bad" is it? Perfect it is not, but nothing is.
2: For normal I2S, OK. But I was wondering if the "TG-Link" is buffered or level shifted or impedance matched or something for longer lines. I remember reading that somewhere, but could be wrong. There isn't a lot of info on it.
Don't get me wrong, I think async is great, just wondering about other ways of getting the clock there. I've spent 25 years running computer graphic signals over long lines. Clock (sync) issues become very obvious there.
There are many ways to deal with that, some good, some bad.
PC->DAC was the Missing Link for my DAC project for over a year. I couldn’t find it so I joined forces with a couple of friends to build it. My USB to I2S design is about to be released. It is an 8-channel Asynchronous USB to I2S interface. It works with ES9018. Please have a look: http://www.diyaudio.com/forums/digi...i-channel-asynchronous-usb-i2s-interface.html
Any feedback is highly appreciated.
exa
Any feedback is highly appreciated.
exa
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