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






Robert McGwier wrote:

> Tom:
>
> I was able to reproduce this by having DMA buffers on my D44 too 
> small,  audio buffers on my PowerSDR small.  Could you please share 
> with us your settings for your sound card (latency, DMA settings 
> dependent upon which card you own) and your audio settings.
>
> Bob
>
>
>
> Tom Thompson wrote:
>
>> On the  new release of 1.6.2, I observe a loud pop when returning to 
>> receive from transmit.  If you click the mox button on and off, you 
>> can hear (and actually see on the panadapter) this loud pop.  This 
>> does not happen on 1.6.2 svn 537.  Does anyone else observe this?
>>
>> 73   Tom   W0IVJ
>>
>>
>>
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>>   
>
>
>


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