Sorry, typo - I want to write a DLL.
Simon Brown, HB9DRV
- Original Message -
From: Simon Brown
... I want to write a DD to do this then add the code to a program of mine.
Somewhere I saw a solution for calibrating a soundcard (not using WWV). Can
anyone help with this please - I want to write a DD to do this then add the
code to a program of mine.
Why? Because I'm thinking about MT63 - looks interesting but the soundcard
accuracy is important.
Simon Brown, HB9D
Thanks for the info Ron.
I am surprised there wasn't a noticeable difference when using WWV
also - but I'm not really surprised about the soundcard checker's
results. 12000 always seemed to work good for me.
Only way I know of to faithfully check the output would be with a
well-calibrated freq co
Kevin,
Using WWV tick as the standard I get the same correction which is 40 ppm
for either the 11025 or 12000, however, when using the soundcard checker
based on the PC's time clock I get a change between 11025 and 12000.
The change is from 15 PPM "IN" at 11025 to 4PPM "IN" at 12000 and the
b
I would be VERY curious how the numbers come out if you set the sample
rate to 12000 instead of 11025. Not sure it will be better, worse or
any any more accurate.
As far as accuracy of calibration goes. I would trust WWV. I
understand that the sound checker program is based on an internal PC
clock
Yes, you guest it, right during the RTTY test I lost audio in, thought I
had a bad cable or lose connection, but no, the dam sound card
(Soundblaster 16bit) just stopped working. So in the mean time I
decided to drop back and use the on board sound card. I then check the
calibration against W
