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192kHz over UAC1 with example code
Posted: Sun Dec 22, 2019 7:51 pm
by tbjr6
It seems that the example code for usb audio given by xmos limits USB audio 1.0 to 48kHz. Has anyone successfully done 192 or greater over UAC1? I am looking to do 192 or 216 over UAC1 if possible as this needs to work on a Windows 7e system and preferably without anything other than the native drivers.
Re: 192kHz over UAC1 with example code
Posted: Sun Dec 22, 2019 9:06 pm
by mon2
Re: 192kHz over UAC1 with example code
Posted: Tue Dec 31, 2019 9:08 am
by fabriceo
Hi,
in UAC1 the packet are sent every miliseconds and max size is 1ko.
with 96k in 24bits this gives a data flow of 96000 * 3* 2 /1000 = 576bytes per usb packet which is ok.
with 192k you are above 1ko so could do it but only in 16bits mode, not 24.
Re: 192kHz over UAC1 with example code
Posted: Tue Dec 31, 2019 6:55 pm
by akp
I assume you need stereo but you might be able to get mono 192ksps with Windows 7 and 24 bits/sample. I can't recall if Windows supports that or not, the Win 7 UAC1 driver is stupidly picky.