Dear Sirs:
I have just found with Asus Xonar U7 USB sound card DT is by approximately
0.3 greater than with USB Sound Blaster:
Sound Blaster:
1300 -4 0.6 1327 # AK1P GM4SQM -15
1300 -8 0.1 1782 # IC8DAK UN7GBY MN83
1301 -3 0.3 1414 # R9MR DH1BBH -19
1301 -1 0.6 1780 # UN7GBY IC8DAK -11
----------------------------------------
XONAR U7:
1303 -7 0.6 1399 # R9MR DH1BBH -19
1303 -1 0.9 1761 # UN7GBY IC8DAK RR73
1304 -2 0.8 1313 # CQ GM4SQM IO75 Scotland
1304 -8 0.4 1761 # IC8DAK UN7GBY 73
While Xonar U7 has 10..15 dB better noise floor there are approximately 30 to
50% signals that are clearly seen in the waterfall are not decoded while using
Xonar U7, and I suspecting the sound card processing delay is the issue. Tested
it with WSJT-X r5133 version.
Xonar U7 works with Asus drivers, Microsoft drivers do not support this sound
card.
I wonder if it possible to let user compensate sound card delay in the settings?
Best regards,
Igor UA3DJY
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