I never experienced the pops that started this thread, but after the latest fix (560) I see the same behavior as Tom. I have to keep the audio buffers high (2048) when the Firebox latency is 6 ms. Anything smaller results in audio dropouts. I also noticed that something has effected the VAC audio channel too. I have to increase my VAC buffer to eliminate drops on transmit.
I'm using a AMD Athlon 64 2X 4400+ (large L2 cache) w/ GB of RAM -Tim --- Integrated Technical Services "Whoa-oh, Smokestack Lightning, shining just like gold. Why can't you hear me crying. Whoa-oh, stop your train, let a hobo ride. Why can't you hear me crying. " --Howling Wolf -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Thompson Sent: Tuesday, June 27, 2006 9:33 PM To: Robert McGwier Cc: flexradio@flex-radio.biz Subject: Re: [Flexradio] audio pop Bob, I downloaded 1.6.3 svn 560 and the pop is gone with the dma buffer set to 2048, the audio buffer to 1024, and the dsp buffer to 2048 with the sampling rate at 96000. When I set the dsp buffer to anything smaller than 2048, the audio motorboats. However, if I set the audio buffer to 2048, the dsp buffer can be set all the way to 256 without motorboating. I just do not understand the relatioship between these buffers well enough to know if this is really a malfunction or not. On the X2 delay issue, I thought the delay was to enable one to key an external amplifier before the SDR put out any RF and then to turn the SDR off before the external amplifier was switched from the antenna, and the delay was in milliseconds. It appears that that is exactly what is happening when the SDR is keyed. When the SDR is unkeyed, the RF and X2 relay keying drop off together, but the tone during tune remains for the delay time. I set the X2 delay to one second so I could better tell what is happening. Under normal operating conditions this is not a problem. The only reason I mention it is maybe that is not the way you intended it to be. Thank you for all the effort on this. 73, Tom W0IVJ Robert McGwier wrote: > Please let me know if the code I checked in fixed the problem. Thanks > for the hint Frank. > > Bob > > > > Tom Thompson wrote: > >> The X2 delay is certainly the key. My svn 537 that was working had >> the X2 delay set to zero. When I set it to a larger number the tone >> can be heard when switching from tune back to receive. I appologize >> for the misleading with svn 537. >> >> Tom, W0IVJ >> >> >> [EMAIL PROTECTED] wrote: >> >> >> >>> 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: >>>> >>>> >>> > > _______________________________________________ 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
