Frank, I think you are on the right track here. A working example of the problems can be seen by setting X2 Delay to (say for example ) 200ms and then pressing the TUNE button. You will notice that when you toggle OFF the tune button you hear the CW side tone for whatever that delay amount is set to. Also, when in SSB, you can notice the last "sylable" of spoken words into the mic, if you keep talking past exact point when you toggle off the PTT.. So something isn't quite right there..
-Dan ----- Original Message ----- From: "Frank Brickle" <[EMAIL PROTECTED]> To: <flexradio@flex-radio.biz> Sent: Tuesday, June 27, 2006 2:05 PM Subject: Re: [Flexradio] audio pop > Where is the value of top.swch.fade -- that's essentially the TRX > crossfade time, in samples -- being set? In the PowerSDR code I > can trace it back through setup_switching() to setup() but haven't > been able to find the call to setup() :-) > > 73 > Frank > AB2KT > > Tom Thompson wrote: > > Bob and Eric, > > > > Under careful scrutiny, the pop is there with the new release with > > settings of 48000 and 2048, but it is reduced. I think that it is so > > fast that the 48000 sampling rate does not catch it all the time or at > > least at as great an amplitude. > > > > Tom > > > > Tom Thompson wrote: > > > > > >>Bob and Eric, > >> > >>I reduced the dma buffer size on the Delta 44 to 512 as suggested. This > >>fixed the flutter, but the pop is still there on all audio tab settings > >>except 2048 and 48000. None of this occurs on svn 537 even with the dma > >>buffer set to 2048. > >> > >>Tom W0IVJ > >> > >>Robert McGwier wrote: > >> > >> > >> > >> > >>>In the task bar, on the bottom right, there is a little black > >>>trapezoidal looking M for your M-Audio control panel. It should on > >>>the task bar over by the clock. Double click on it. There is a DMA > >>>buffer size setting there. If it is larger than 512, please > >>>decrease it to 512 and try this again. > >>> > >>>This all probably needs better documentation than we currently have. > >>>We really did do major league surgery on the way things worked by > >>>removing a few unnecessary lines of protection. This in turn revealed > >>>other levels of poor coding on our part. There may still be a > >>>"easter egg" or two we need to remove! > >>> > >>>Bob > >>> > >>> > >>> > >>>Tom Thompson wrote: > >>> > >>> > >>> > >>> > >>>>Bob, > >>>> > >>>>I am using the Delta 44 card with the buffer size on the audio tab > >>>>set to 2048. The sampling rate is 96000 and the manual latency is > >>>>unchecked. My dsp buffer is 2048. I found that on the new release > >>>>that if I decrease the buffer size on the audio tab below 2048 the > >>>>audio flutters. If I decrease the sampling rate to 48000 the flutter > >>>>frequency halves. The only combination of sampling rate and buffer > >>>>size that I get no pop and no flutter is 48000 and 2048. I get audio > >>>>flutter on any buffer size below 2048 at either 96000 or 48000. > >>>> > >>>>On 1.6.2 svn 537, the audio never flutters, and I have to decrease > >>>>the buffer to 256 at 48000 for the pop to occure. It will not pop at > >>>>256 with the sample rate at 96000. > >>>> > >>>>I hope this helps. > >>>> > >>>>73, Tom W0IVJ > >>>> > >>>> > >>>> > >>>> > >>>> > >>> > >>> > >>> > >> > >> > >>_______________________________________________ > >>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 > >> > >> > >> > >> > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: /pipermail/flexradio_flex-radio.biz/attachments/20060627/16bd429d/attachment .html > > _______________________________________________ > > 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 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 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
