[Lowfer] Re: ARGO Problems...

Tue, 24 Feb 2004 11:06:57 +0100

"KD7JYK" <[email protected]> wrote:

>I click to zoom on a signal, it changed the display from a waterfall to
>spectrogram at twice the bandwidth, it didn't zoom, it halved!  Once I do
>this I can't stop the program, I have to control-alt-delete three to five
>times to kill it.
>
>The ten second ticks are exactly one second apart (timed to WWV)!!
>
Kurt,
  I maybe wrong, but those seem to be the symptoms of a sound card 
unable to sample
at 5512 Hz. Argo uses 11025 Hz when in "full band view " mode, with 
vertical scrolling.
Going to horizontal, it switches to 5512 Hz. I have found some sound 
cards unable of this
sampling rate.
Maybe in a next version I should keep 11025 Hz also for the horizontal 
modes, even if this
would mean more CPU load to keep the same resolution (unless I will do a 
decimation
like in Jason...)

73  Alberto  I2PHD