Sounds interesting. You produce this completely yourself? Curious about the results to use with Stereo Tool. How many stereo in- and outputs are there on it? Do you have ASIO drivers too?
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| USB 176,4/192kHz BIT PERFECT HQ SOUND CARD https://www.forums.stereotool.com/viewtopic.php?t=4817 |
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| Author: | dj_szpajda [ Fri May 10, 2013 10:15 am ] |
| Post subject: | USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
Welcome I designed for my private use high quality native sample rate support 176,4&192kHz 16/24bit ultra flat frequency response, phase linear filter, jitter free - dedicated for composite. Cost is about 75 Euro At the moment I have 2 prototypes build with CM6631A+PCM1794A, if someone will be interested in I can make more. |
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| Author: | Edgar [ Fri May 10, 2013 11:22 am ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
Sounds interesting. You produce this completely yourself? Curious about the results to use with Stereo Tool. How many stereo in- and outputs are there on it? Do you have ASIO drivers too?
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| Author: | dj_szpajda [ Fri May 10, 2013 11:31 am ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD 130dB SNR |
ASIO driver also, but no input, only 1 output, actually only for composite ST but standard stereo is possible. Hardware is designed by me, software - driver/firmware comes from c-media. >120dB SNR with 80% of 0dBFS level. |
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| Author: | Bojcha [ Fri May 10, 2013 2:45 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
Interesting! Can we see some pictures? Is it something like this?.. http://2.bp.blogspot.com/-EY8DQNzfzzc/U ... CMEDIA.jpg http://img02.taobaocdn.com/imgextra/i2/ ... 508936.jpg http://www.pennybuying.com/pbuying/nEO_ ... 285%29.jpg |
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| Author: | dj_szpajda [ Fri May 10, 2013 3:19 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
It will looks like this I'll try to do some pictures but at moment it's looks like alpha prototype 
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| Author: | Bojcha [ Fri May 10, 2013 3:22 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
I would also like to see some scope testing
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| Author: | dj_szpajda [ Fri May 10, 2013 3:31 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
Real scope test is no problem but print screen from analog has no good quality what kind of test would you like to see?
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| Author: | DJ-DOGGY [ Fri May 10, 2013 4:02 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
Any datasheet of CM6631A ? ver 1.0 ? |
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| Author: | dj_szpajda [ Fri May 10, 2013 4:35 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
Advanced datasheet is NDA protecded. Hardware is not standard from datasheets, specially designed for a specific purpose. Output composite levels, impedance, etc can be like industrial standard in similar box equipment. |
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| Author: | DJ-DOGGY [ Fri May 10, 2013 5:58 pm ] |
| Post subject: | Re: USB 176,4/192kHz BIT PERFECT HQ SOUND CARD |
 , protected ?From what ? , what that gold thing is inside ? Really i don`t understand what "gold" will have a chip ? and only a converter from USB to I2S and some more .. And i suspect only firms that provides DAC`s to have it .... it`s a totally shame for C-media ! |
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