[hpsdr] PennyMerge I/Q REcording

[S. Nestra]

Hi Joachim and group,

I only did a quick test of the recording and this was with a Mercury 
sampling speed of 96000 (192000 is still not working for me, a lot of 
distorsion and pops with any buffer size). And a recording sampling 
speed of 48000.
In the past I couldn't record at any speed, the audio was always too 
fast and had distorsion.
BTW, setup is a HP laptop with Intel® Core™2 Duo Processor T8100, 2.10 
GHz and 4GB

Sincerely,

Stijn




Joachim DL7JP schreef:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> Dear all,
> 
> here's an update on my problem with I/Q recording:
> 
> - I updated today to the most recent version (PowerSDR 2025, 
>   Ozy 12, Merc 26, Pen 11); I had to run  usbblaster.bat 
>   each time I power cycled Ozy, otherwise the update script 
>   would complain abt lacking cable (the Altera USB Blaster 
>   device is gone after switching the boards off...). 
>   
> - This configuration has on my PC some problems with audio 
>   "pops" at  19200 Sample rate and 2048 Buffer size: every 
>   few seconds an audio drop out - both TX and RX). It works 
>   OK with 1024 buffer size or at 9600/2048.
>   PC is Intel Core 2 CPU 6400 @ 2.13 GHz, 2 GB RAM, Win XP.
> 
> - Recording is still distorted at 19200: slightly too fast in 
>   playback and popping noise; it works OK at 9600 sample rate.
> 
> Since it works for Stijn PE1RKS, I am wondering what could be
> wrong in my setup ... any ideas?
> 
> 
> tnx es 73, Joachim.
>   
> 
> 
>> -----Ursprüngliche Nachricht-----
>> Von: Joachim DL7JP [mailto:dl7jp at gmx.net]
>> Gesendet: Dienstag, 3. März 2009 12:28
>> An: HPSDR Reflector
>> Betreff: AW: [hpsdr] PennyMerge I/Q REcording
>>
>> Stijn PE1RKS:
>>
>>> Did some tests this morning and with all the latest versions for
>> Merc.
>>> Pen. and PSDR at least the recording and playback (with 11kHz freq
>>> shift
>>> in PSDR) seem to work.
>> Thanks a lot! I did not upgrade to the latest firmware for Pen/Merc
>> yet but if this sorts out the problem I will do so asa I return
>> from my current business trip.
>>
>> 73, Joachim.
> 
> 
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