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Does the USB receiver module in I2S support 24/96K and 24/192K recordings?
Thanks,
Brad
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The USB module uses the TI PCM2707 USB DAC chip, which is limited to 16/44.1k.
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Wondering if you folks have considered FireWire instead of USB? ... I understand that the 16bit USB port / chip may be a problem for playback of DVD movies, which are pretty much standardizing on 24bit/48k and up. (DVD-A too.) Edited by user Friday, August 29, 2008 9:38:58 AM(UTC)
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Brian Donegan wrote:The USB module uses the TI PCM2707 USB DAC chip, which is limited to 16/44.1k. Isnt it 16-bit/48k?
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MrMajestic wrote:Brian Donegan wrote:The USB module uses the TI PCM2707 USB DAC chip, which is limited to 16/44.1k. Isnt it 16-bit/48k? Yes, my mistake.
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FastEddy wrote:Wondering if you folks have considered FireWire instead of USB? ... I understand that the 16bit USB port / chip may be a problem for playback of DVD movies, which are pretty much standardizing on 24bit/48k and up. (DVD-A too.)
Yes. We are investigating a Firewire to I2S module. It really comes down to drivers. We will post more information as we settle on things.
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Any more info on the firewire to i2s module?
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Nope. We haven't even discussed it again. To many other things happening at the moment.
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Hello from France !
I just received my order, everything is perfect, thank you very much !
I have mounted all the components on the boards, tested the LCDPS & LCBPS, tested the USB module alone on my Mac with the analog output on my headphone, all is ok.
I have connected the Buffalo to the Ivy, now I want to connect the USB module to the SPDIF input of the DAC, but I don't understand the different connexions of the USB module and I don't find the manual very clear.
What does mean :
MD
MC
MS
VBUS
BCK
SCK
LRCK
DO
DI
Which ones do I connect to the SPDIF and G inputs of the Buffalo ?
Thanks for your help.
Jean-Baptiste
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There are two ways you can connect the USB module to the Buffalo: I2S or S/PDIF.
To use I2S, set the jumper on the USB module to I2S, the S/PDIF switch on the Buffalo to off (the side marked "1"), and switch 1 on the Buffalo to "-". Then make the following connections:
USB BCK -> Buffalo DCK
USB LRCK -> Buffalo D1
USB DO -> Buffalo D2
USB GND -> Buffalo G
To use S/PDIF, set the jumper on the USB module to SPDIF, the S/PDIF switch on the Buffalo to "On", and switch 1 on the Buffalo to "+". Then make the following connections:
USB DO -> Buffalo SPDIF
USB GND -> Buffalo G
That's it.
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Thank you very much Brian !
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Hi Brian,
Have you considered to use TUSB3200A instead of PCM2707?
I heard that specification of TUSB3200A is literally better than PCM2707.
Any thought?
Thanks,
onejun
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Brian/Russ
Any idea what are the chances of the USB interface working with a Ubuntu Linux install?
Mark
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Mark Wheeler wrote:Brian/Russ
Any idea what are the chances of the USB interface working with a Ubuntu Linux install?
Mark Hello Mark, I started with USB/Windows about 3 years ago, using Foobar with the WAV-files on a RAM-disk. Easy and quite a good quality. Under the influence of Soundcheck I switched to Linux/Ubuntu/USB with XMMS and again a RAM-disk. This is very straightforward and sounds better than the Windows option (and you save money on your new computer). The next step was to use the real-time possibilities with an adapted Kernel and a real-time program called BruteFir. All the necessary scripts I received from Soundcheck and also additional support while installing. This is definitely more complex but very rewarding, my WAVs are now stored on the hard-disk resampled at 48 kHz. The sound is now much, much better than USB/Windows that was already better than a very expensive Theta CD-transport. Ubuntu can very easily be tried from a bootable CD at no cost, nothing will be installed. So I really advise you to try. A lot of information can be found on: http://www.diyaudio.com/...dex.php?page=LINUX+Audiohttp://www.diyaudio.com/...3d163&threadid=93315Kind regards, Eddie
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Eddie wrote:Mark Wheeler wrote:Brian/Russ
Any idea what are the chances of the USB interface working with a Ubuntu Linux install?
Mark Hello Mark, I started with USB/Windows about 3 years ago, using Foobar with the WAV-files on a RAM-disk. Easy and quite a good quality. Under the influence of Soundcheck I switched to Linux/Ubuntu/USB with XMMS and again a RAM-disk. This is very straightforward and sounds better than the Windows option (and you save money on your new computer). The next step was to use the real-time possibilities with an adapted Kernel and a real-time program called BruteFir. All the necessary scripts I received from Soundcheck and also additional support while installing. This is definitely more complex but very rewarding, my WAVs are now stored on the hard-disk resampled at 48 kHz. The sound is now much, much better than USB/Windows that was already better than a very expensive Theta CD-transport. Ubuntu can very easily be tried from a bootable CD at no cost, nothing will be installed. So I really advise you to try. A lot of information can be found on: http://www.diyaudio.com/...dex.php?page=LINUX+Audiohttp://www.diyaudio.com/...3d163&threadid=93315Kind regards, Eddie Hi Eddie Thanks for the encouragement. I have been following the DIYaudio threads, and encouraged by the success of Souncheck and PHofman, have started to tread down this path. UNfortunately I cannot get audio out of my computer using any of the Linux builds I have tried so far. I feel I have a long way to go, a lot to learn in this area. I am using an M-Audio Audiophile 2496 card which I use to pass SPDIF to my Buffalo dac in windows with great success (Foobar/SRC at 96k and EAC to rip on a stripped back XP install). But I can only get Linux (Alsa) to produce test tones through the SPDIF and I haven't yet figured how to set the environment up to pass music to the SPDIF. I ultimately would like the kind of set up you have but I have a long way to go. So the reason I've asked about the USB converter is that maybe it will be easier to get an audio stream out of the Linux environment to my Buffalo. Thanks for the encouragement. I am struggling with the Linux approach at the moment. Mark
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Hello, I ordered yesterday the BUFIVYCOMBO and intend adding the S/PDIF MUX. 1. Can the S/PDIF MUX and the USB Receiver Module work simultaneously with the Buffalo DAC? 2. Can the USB Receiver Module be added to the S/PDIF MUX instead of 1 of its inputs? 3. Is there a pin compatible chip that may replace the TI PCM2707 USB DAC chip in the USB Receiver Module to support 24/96K and/or 24/192K inputs? Thank you. Edited by user Sunday, November 9, 2008 5:46:24 AM(UTC)
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1&2. Yes. The best way to do this is set the USB Module to output S/PDIF and feed it to one of the MUX inputs.
3. No.
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In addition to previous question – how can the output of the USB Receiver Module be connected to 1 of the inputs the S/PDIF 4:1 MUX/Receiver Module, since the USB Receiver Module have separate L and R outputs?
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It USB Module has a digital output header as well. When the Format jumper is set to I2S, it outputs 16bit I2S using BCK, SCK, LRCK, DO and GND. When the Format jumper is set to S/PDIF, it outputs S/PDIF using DO and GND.
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