I like this approach and would appreciate being able to see some data like this. However, I'd like to throw in my 2 cents here. An even bigger issue than having "just" a 1GHz processor is: What processes are running at the same time as the PowerSDR software? We have seen instances where two people running similar specced computers (same CPU speed, same amount of ram, same OS, etc) got very different PowerSDR results because of what OTHER software was loaded and running on the machine. If you have other sources competing for the CPU, you may experience artifacts that wouldn't otherwise be there.
I'll leave the issue of what to remove and what is necessary to someone else to decide, but it is a good idea to know what processes are running on your computer. Eric Wachsmann FlexRadio Systems > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > radio.biz] On Behalf Of Tim Ellison > Sent: Wednesday, December 14, 2005 7:53 AM > To: Lyman H. Wolfla II; richard allen; ab7r; Flexradio@flex-radio.biz > Subject: Re: [Flexradio] SSB audio question > > There seems to me that there is a common theme floating around here > concerning the buffer settings for optimal use. Since there also seems > to be answers that are all over the spectrum (which is understandable > due to the variables involved), maybe a more scientific approach is > required > > Maybe what we need to do is collect some data from the users on the > reflector on the processor used vs. buffer settings categorized by sound > card. Plot the data with the processor/speed data on the X axis and the > buffer settings data on the Y axis. Hopefully there will be some sort > of correlation and the graph will have some sort of linearity. > > If it works, a nice little graphical representation could be useful for > new users setting initial buffer setting values and experienced users to > "tweak" their systems. > > I'd be willing to collect the data if enough people are interested. > Just send it to me off-list > > I need the following data: > > 1.) Processor family/type and speed > 2.) Type of sound card used > 3.) DMA buffer size (Delta 44) > 4.) Sound Card buffer size > 5.) DSP buffer size > 6.) VAC buffer size (if applicable) > > -Tim > --- > Tim Ellison ( [EMAIL PROTECTED] ) > Integrated Technical Services ( http://www.itsco.com ) > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Lyman H. Wolfla > II > Sent: Wednesday, December 14, 2005 7:52 AM > To: 'richard allen'; 'ab7r'; Flexradio@flex-radio.biz > Subject: Re: [Flexradio] SSB audio question > > It has been my experience with a slower computer that the buffer size > will > effect the transmit echo. Try lowering it and see what reports you get, > I > needed to use the lowest setting. > > 73 > Hank - K9LZJ > > Hank Wolfla > Lyman H. Wolfla II, Inc. > 1308 S. Peace St. > Greenfield, IN 46140 > [EMAIL PROTECTED] > 317-861-0186 > Cell: 317-448-3457 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of richard allen > Sent: Wednesday, December 14, 2005 4:46 AM > To: 'ab7r'; Flexradio@flex-radio.biz > Subject: Re: [Flexradio] SSB audio question > > It was really a combination of the echo and recognising your call from > this venue. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of ab7r > Sent: Sunday, December 11, 2005 2:55 PM > To: Flexradio@flex-radio.biz > Subject: [Flexradio] SSB audio question > > > Not sure if this has been addressed, but probably has. > > Was spending some time in the 10M contest and worke W5SXD (Hi Rich). He > knew right off the bat I was running an SDR1K cuz of an echo in the > audio. I have also had other remark about a slight echo. > > Any idea what causes this and if it can be eliminated? > > Other than that, SDR1K played well using N3FPJ software and 1KW amp. > Originally was getting lock up problems, but moved my USB port around > and added some ferrite beads and eliminated the problem. > > 73 > Greg > AB7R > > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz
