Steve Anderson wrote:The 'Audio Soundcard' above looks OK, but without downloading the datasheets (yet) I can't find any reference to sample rates or other specifications...unless that's in the soundtrack with the video (I haven't played it yet).
It's also just the output side, i.e. playback only, no record function, unless I've missed that as well...entirely possible!! Of course the hardest part is the record function...
Steve A.
In your added text 192kHz sampling is mentioned which in theory can record up to 98kHz, assuming it can record. Again that depends on the input anti-aliasing filter (if there is one)....and again you end up with bloated file sizes.
Having had a quick look at the first datasheet for the PCM270xC on the very first page it says, "Sampling Rates: 32 kHz, 44.1 kHz, and 48 kHz" No mention of 96 or 192kHz anywhere that I can see...
Now this is becoming confusing...why then is there a second D-A that can go at 192kHz? (the PCM1794A). Maybe I'll come back to this once the coffee kicks in...
OK, the caffeine has done its job...but I'm still confused! No problem, the fact is the PCM1794A can go at 192kHz and the device is playback only. Now where did this all start?...
FYI The PCM1794A is around US$16++ each at Digikey. Not only can it handle 192kHz but is 24-bit.
IS play back only a problem ? i suppose if you had a camera and wanted to record a higher bandwidth is some thing i didn't think about ,i was more thinking outputting to a monitor ....but good point
If its worth it if this is a project or not as it could be just a matter of buying a fully built thing or module or come down to as you say a chip if there's a lot of saving here ....worth the time for the improvement ? i am curious !
Before the other day i knew nothing about all this apart from i knew you could have an external sound device .
If any thing this one you mentioned must improve of a standard sound card ,i do want to do that test on what the sound cards can and can't do nearly finished on the monitor move onto this .
i was was look at the data sheet sample up to 200khz maximum ,seen other USB DAC's saying they can sample over 300khz if true must be more pricy
I see there is some sort filter in this device ,if this is a good bad thing !
Any case i just have a look around what's built with this chip so far .Just reading your new post Steve