Phil,
> I am not sure if running two programs from the same soundcard
> degrades the ability of one of them, but I have not noticed
> anything here.
It is possible to run two programs on one sound card without any
degradation under one condition. The sample rates of both programs
must be the same or INTEGER multiples of each other. For example,
if you choose to run MMVARI and WinPSK (based on PSKcore) at the
same time, MMVARI must be reconfigured to use a sample rate that
is a multiple of 12 KHz (instead of the 11025 default) since PSKcore
is fixed at 48 KHz.
If the sample rates are not integer multiples, the second program
will receive "resampled" data. The resample process will introduce
significant clock errors which will degrade the decoding.
73,
... Joe, W4TV
> -----Original Message-----
> From: writelog-bounces@contesting.com
> [mailto:writelog-bounces@contesting.com] On Behalf Of Phil Cooper
> Sent: Thursday, November 22, 2007 3:05 PM
> To: writelog@contesting.com
> Subject: Re: [WriteLog] Writelog's Future with PSK31
>
>
> Hi all,
>
> Joe W4TV wrote ................
> "Writelog provides an excellent PSK31 decoder in RTTYrite which
> works better than DigiPan or MMVARI exactly because it uses
> narrow filters in the receiver rather than look at a 3 KHz chunk
> of the band. High performance PSK31 is absolutely impossible
> with wideband decoders because one either has 'unwanted' signals
> pumping the AGC or creating IMD in the receiver if the AGC is
> disabled."
>
> This is really true, and should be tried for it to be fully
> appreciated. The
> decoder in WL is way superior to any of those programs that
> offer wide band
> decoding.
>
> However, there is possibly a way round the way some of you
> want to work.
> Run WL in the usual way, but then use one of the programs offering
> panaromaic decoding and you can easily see which signals are
> where. I am not
> sure if running two programs from the same soundcard degrades
> the ability of
> one of them, but I have not noticed anything here.
> I have tried it with MultiPSK, and then clicking on the
> PANORAMIC button.
> Also, with those panoramic decodes, you can easily spot the
> over-driven
> signals, as they appear in multiple channels!
>
> Whilst on the topic of PSK, why are so many folk using all
> CAPITALS for
> PSK31?
> Tx'ing caps in PSK31 takes much longer, and is a total waste
> of time and
> energy.
>
> 73 for now
>
> Phil GU0SUP
>
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