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Post by DellaDog on Sept 28, 2014 7:26:36 GMT -5
No matter what I do, set up fails with "please connect USB" device error. (Or similar words) I can stream with the default USB 2.0 windows drivers, but sure would like to get the dedicated drivers installed. Thanks.
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bootman
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Post by bootman on Sept 28, 2014 7:47:49 GMT -5
I believe the default drivers are what you are suppose to use. The drivers in the download are for win 7 not 8.
I don't think the chip maker is making a dedicated win 8 driver now that the default supports it.
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Post by DellaDog on Sept 28, 2014 8:31:03 GMT -5
I believe the default drivers are what you are suppose to use. The drivers in the download are for win 7 not 8. I don't think the chip maker is making a dedicated win 8 driver now that the default supports it. Thanks, but Win 8 drivers ARE included in the download.
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bootman
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Post by bootman on Sept 28, 2014 10:38:46 GMT -5
Yes I see that. The PDFs also mentions 8.1. Does these drivers enable something extra that the stock ones don't? I only have my DC-1 hooked up to a win7 so I have not tried the built in win8 drivers yet.
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Post by doc1963 on Oct 20, 2014 10:19:14 GMT -5
No matter what I do, set up fails with "please connect USB" device error. (Or similar words) I can stream with the default USB 2.0 windows drivers, but sure would like to get the dedicated drivers installed. Thanks. DellaDog... did you ever find a solution to this... I ask because I just purchased a PC "mini tower" to ( possibly) replace my Mac Mini and have encountered the same " Please connect a USB 2.0 device" error while running the installation program. There must be a glitch in the installer because the XMC-1 shows up in the "devices" list every time it's plugged in. I tried using both installers (as recommended in the instructions), but met with the same results with either... Just out of curiosity, I plugged my DC-1 into the same USB port (in place of the XMC-1). The installer ran successfully and completely upon the first try. Of course JRiver doesn't list the same driver that KeithL tells us to look for HERE, but instead lists an AISO version by the same name. As a result, I've just resorted to using the default WASAPI driver and it seems to work fine (although the ASIO driver should work too).
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nuts
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Post by nuts on Oct 20, 2014 10:40:59 GMT -5
Same here! "please connect USB" device error on Win 8.1 ...
With the default driver I get only stereo sound. Normal or driver issue?
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Post by doc1963 on Oct 20, 2014 10:46:09 GMT -5
Same here! "please connect USB" device error on Win 8.1 ... With the default driver I get only stereo sound. Normal or driver issue? Hmmm... I can't answer that one as I only use this PC (and JRiver) as a 2.0 "music" server at this time.
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bootman
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Post by bootman on Oct 20, 2014 11:40:22 GMT -5
Same here! "please connect USB" device error on Win 8.1 ... With the default driver I get only stereo sound. Normal or driver issue? Please provide some examples and what software you are using for playback. It could be driver but it could also be player software. I assumed anyone using multichannel would just use digital out or HDMI out not USB.
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Post by doc1963 on Oct 20, 2014 12:47:15 GMT -5
Well now.... I guess THIS will more than take care of it.....
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KeithL
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Post by KeithL on Oct 20, 2014 13:53:10 GMT -5
As you say, most people use HDMI for multi-channel digital audio. There are several issues with doing multi-channel over USB. The main issue is bandwidth - which is somewhat limited with a USB input; some surround sound modes will work; others won't. DTS usually works (especially at the lower sample rates that can be played from a CD - like 44.1k x 5.1). Dolby TrueHD needs too much bandwidth - and so won't work. Another issue is simply that the drivers on your computer, and your player program itself, must support the option. We haven't tried all the options and permutations. Same here! "please connect USB" device error on Win 8.1 ... With the default driver I get only stereo sound. Normal or driver issue? Please provide some examples and what software you are using for playback. It could be driver but it could also be player software. I assumed anyone using multichannel would just use digital out or HDMI out not USB.
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KeithL
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Post by KeithL on Oct 20, 2014 14:52:44 GMT -5
I STRONGLY URGE YOU ALL TO STOP TROUBLESHOOTING DRIVER ISSUES WITH THE CURRENT USB FIRMWARE AND DRIVER.
I'm going to stop answering questions about this topic for now (so I can finish vetting and posting the driver and firmware).
Several small but important operational details will be fixed (changed) by the update. Read the notes and instructions that will be presented with the update CAREFULLY for details. Same here! "please connect USB" device error on Win 8.1 ... With the default driver I get only stereo sound. Normal or driver issue? Please provide some examples and what software you are using for playback. It could be driver but it could also be player software. I assumed anyone using multichannel would just use digital out or HDMI out not USB.
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nuts
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Post by nuts on Oct 20, 2014 16:43:35 GMT -5
There are several issues with doing multi-channel over USB. The main issue is bandwidth - which is somewhat limited with a USB input; some surround sound modes will work; others won't. DTS usually works (especially at the lower sample rates that can be played from a CD - like 44.1k x 5.1). Dolby TrueHD needs too much bandwidth - and so won't work. Another issue is simply that the drivers on your computer, and your player program itself, must support the option. Hmmm Dolby TrueHD is up to: www.dolby.com/us/en/technologies/dolby-truehd.htmlOk we are talking about PCM Data, but 8 channel 96kHz/24-bit is still: 9600 * 24bit * 8 channels = 18,xxx mbit/s Thats too much for USB? Of cource its a drivers issue. Its your product and your driver. Don't care about Players. This will work just fine if your driver is doing it right ...
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Post by rogersch on Oct 26, 2014 7:38:47 GMT -5
Here are my experiences with the use of the USB input. Just for testing purposes because normally I use my media center PC, see my signature, connected via HDMI. My XMC-1 has firmware 1.3. I connected a windows 8.1 tablet/laptop and it automatically recognized the XMC-1 and downloaded the drivers! I always use Foobar to play my music on my PC's so also now I used Foobar and configured the WASAPI mode (like I always do when the system is connected via USB or Optical to an AVR etc.). If you don't know how to do this, it is clearly described here on the Emotiva website. Played the following type of files: 44.1 kHz 16 bit stereo | Succes | 48 kHz 24 bit stereo | Succes | 88.2 kHz 24 bit stereo | Succes | 96 kHz 24 bit stereo | Succes | 192 kHz 24 bit stereo | Succes | 48 kHz 24 bit 5.1 multichannel | Fail. Foobar reports unsupported device |
So for stereo it works great but not for multichannel music. By the way: The "excuse" that from a bandwidth point of view it is not possible to support multichannel audio I find strange because 192kHz/24bit stereo requires a higher bandwidth than 48kHz/24bit 5.1 audio.... That DTS and Dobly digital, not HD, will work is that these formats are encoded in 2 channel audio streams. I presume the limitation in the used chipset that it only supports 2 channel audio streams (like for SPDIF). Note 1: There is really one annoying thing to the XMC-1. All the inputs are by default configured for 2.0 to auto. When playing 2.0 audio automatically an "upmixing" algorithm kicks in! Who on earth decided that this is the default behavior. Why not use for 2.0 audio by default just stereo? Note 2: When correcting the input setting for USB stream to stereo (for 2.0). I noticed that the change was not stored in the permanent memory, I even performed a backup of my settings. After powering up the XMC-1 again the 2.0 input setting was again set to auto. . Only after performing a factory reset and a restore of the backed up settings, the settings got permanent. I noticed this kind of strange behavior also yesterday in configuring other, not all, settings.
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Post by garbulky on Oct 26, 2014 17:19:08 GMT -5
Dolb's maximum encoded bitrate is 18 Mbits/second. USB 2 can do 480 Mbits/second or 60 megabytes/second.
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nuts
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Post by nuts on Nov 14, 2014 13:15:07 GMT -5
KeithL: Could you please explain a little bit more why multichannel PCM is not supported? Bandwidth should be no problem ...
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Post by rogersch on Nov 14, 2014 13:30:34 GMT -5
KeithL: Could you please explain a little bit more why multichannel PCM is not supported? Bandwidth should be no problem ... The used C-media chip for usb only supports two channel audio. Please note dolby digital and DTS is multi-channel compressed audio which only requires two audio channels.
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bootman
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Post by bootman on Nov 14, 2014 13:43:24 GMT -5
KeithL: Could you please explain a little bit more why multichannel PCM is not supported? Bandwidth should be no problem ... Who does MPCM over USB now? And why not just use HDMI? (yes especially on a HTPC)
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nuts
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Post by nuts on Nov 14, 2014 16:16:44 GMT -5
KeithL: Could you please explain a little bit more why multichannel PCM is not supported? Bandwidth should be no problem ... The used C-media chip for usb only supports two channel audio. Please note dolby digital and DTS is multi-channel compressed audio which only requires two audio channels. Hm ok then ... I dont understand why KeithL is talking about bandwidth ... Chip cant do it .. thats it! Stop talking nonsense and move on ... bootman: I know "MPCM" can be used over hdmi ... i.e. for measurement (REW) multichannel over USB could have been useful.
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KeithL
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Post by KeithL on Nov 14, 2014 17:56:37 GMT -5
He's right.... chip won't do it.... move on. (I was just sort of thinking sideways.... even if the chip would handle it otherwise, something like Dolby TrueHD at 7.1/96k would require a lot more bandwidth than 2 channels at 24/192 - which is the highest rate that chip supports.... but, yeah, it wouldn't do it anyway ) The used C-media chip for usb only supports two channel audio. Please note dolby digital and DTS is multi-channel compressed audio which only requires two audio channels. Hm ok then ... I dont understand why KeithL is talking about bandwidth ... Chip cant do it .. thats it! Stop talking nonsense and move on ... bootman: I know "MPCM" can be used over hdmi ... i.e. for measurement (REW) multichannel over USB could have been useful.
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