For what it's worth, it is actually more expensive in terms of CPU cycles to playback from a wave file. This is because you are actually utilizing the CPU for soundcard input and output as usual PLUS you are buffering the wave file data and stuffing the soundcard buffers.
Eric Wachsmann FlexRadio Systems > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > radio.biz] On Behalf Of Alan NV8A > Sent: Tuesday, January 30, 2007 7:20 PM > To: FlexRadio Reflector > Subject: Re: [Flexradio] PowerSDR puzzlement > > On 01/27/07 05:37 pm I wrote: > > > A while back I tried PowerSDR 1.6.2 on my old 850MHz PIII notebook with > > 512MB RAM and an Extigy Sound device and ran it with the sample .WAV > > files. It seemed pretty good and I started thinking about possibly > > getting an SDR-1000 or its successor, although I was warned that that > > computer probably would not cut the mustard. > > > > Since then I have upgraded a couple of other computers and realized that > > I had enough stuff left over to put together a 1GHz PIII desktop with > > 768MB RAM. (In fact I've since found another 128MB but haven't yet > > installed it.) > > > > So now I have tried both 1.6.3 and 1.8.2 on this "beefier" machine but > > without success. The Extigy works for all the normal sounds, and the > > settings in PowerSDR are the same as on the notebook, but when I click > > the Standby/On button I just get a raspy burst of sound and the machine > > either slows right down (pointer can take minutes to move) or locks up > > altogether. > > > > Both machines have WinXP SP2, but the notebook has Pro while the desktop > > has Home. > > > > Where do I start looking? I am neither a Windows guru nor even a Windows > > fan. > > Some other things seemed flaky on that desktop computer too, so I > reinstalled WindowsXP Home. Even then it took a while to get PowerSDR > and the Extigy talking to each other OK: at first, even though the > Extigy diagnostics gave it a clean bill of health, PowerSDR said it > couldn't find it. > > I'm still not sure what I did that got it working, but at least it is > working now with PowerSDR 1.8.0 (the "1.8.2" in my earlier message was a > typo), but since it shows approx. 70% CPU utilization while processing > the sample .wav files, I'm wondering how it would handle processing data > from the sound "card" while also controlling a real SDR1000 and running > Ham Radio Deluxe and keeping in touch with the DX cluster and sometimes > even looking up QRZ and controlling my rotator. > > Alan NV8A > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com/ > > FlexRadio Knowledge Base: http://kb.flex-radio.com/ _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Homepage: http://www.flex-radio.com/ FlexRadio Knowledge Base: http://kb.flex-radio.com/
