Re: [digitalradio] Re: Soundcard Calibration

2007-09-13 Thread [EMAIL PROTECTED]
Simon Brown wrote: Doesn't this assume an accurate system clock? I think I see a class in gMFSK / fldidgi to compare input = output but for calibration we need an accurate source. I use Dimension-4 to keep my PC clock on time, but there are other similar programs about. I suspect that

[digitalradio] Re: Soundcard Calibration

2007-09-12 Thread Vojtech Bubnik
--- In digitalradio@yahoogroups.com, Simon Brown [EMAIL PROTECTED] wrote: 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 -

Re: [digitalradio] Re: Soundcard Calibration

2007-09-12 Thread Simon Brown
Doesn't this assume an accurate system clock? I think I see a class in gMFSK / fldidgi to compare input = output but for calibration we need an accurate source. Simon Brown, HB9DRV - Original Message - From: Vojtech Bubnik [EMAIL PROTECTED] I think Patrick in his MultiPSK has some

[digitalradio] Re: Soundcard Calibration

2007-09-12 Thread Vojtech Bubnik
Doesn't this assume an accurate system clock? I think I see a class in gMFSK / fldidgi to compare input = output but for calibration we need an accurate source. If your system time is 1 second off every day, system clock precision is 1 / (24*60*60) = 12 ppm. My feeling is that this is good

[digitalradio] Re: Soundcard Calibration

2007-09-12 Thread jeffnjr484
: Wednesday, September 12, 2007 9:50 AM Subject: [digitalradio] Re: Soundcard Calibration --- In digitalradio@yahoogroups.com, Simon Brown simon.brown@ wrote: Somewhere I saw a solution for calibrating a soundcard (not using WWV). Can anyone help with this please - I want