Design and Implementation of High-Performance FPGA Signal Processing Datapaths for Software Defined Radio
www.rdfwt.com Register and browse -------Original Message------- From: py2wm Date: 03/25/06 21:21:55 To: [email protected] Subject: [soft_radio] Re: SDRadio/Winradio amplitude adjusting > > Hi Alberto, > > > > In SDRadio and Winradio, to what extent does the "channel skew" > > amplitude adjustment allow for amplitude unbalance? > > > > I intend to do a Monte Carlo evaluation of a QSD/audio pre- Amplifier > > to discover the maximum tolerance of components which could be > > balanced out by the software correcting tool. > > > > 73, > > > > João De Marco, PY2WM > > João, > > the adjustment range in SDRadio is rather limited, as I didn't Foresee a great imbalance in amplitude. Maybe I was > wrong, but currently one of the two channels has an amplitude Multiplier that can range from 0.95 to 1.05 when you > change the slider position in the skew adjustment panel. The tests I did with my homebrew hardware indicated that this > range was plenty enough, but some Softrock users have reported That a greater range maybe would be more indicated. One > thing to be careful about : the Windows mixer panel for the sound Card has small horizontal sliders for left/right > balancing. Please make sure that they are exactly in the middle Position, otherwise they will introduce an error greater > than what my routine is capable to fix... > > 73 Alberto I2PHD > Thanks Alberto, That's enough information, I just wanted a ballpark number to start With. I guess that when this adjustment range doesn't fix an unbalance Then it is the hardware that needs correction...! Best regards and 73, João De Marco, PY2WM YAHOO! GROUPS LINKS Visit your group "soft_radio" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
