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:
>>    
>>
>>>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
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>            
>>>>>>
>>>>>
>>>>>          
>>>>>
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>>>>Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/
>>>>FlexRadio Homepage: http://www.flex-radio.com
>>>>
>>>>
>>>>
>>>>
>>>>        
>>>>
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