Re: [softrock40] Re: Soft rock v6 with Flex Power SDR software and sb 24 live sound card
- Giancarlo wrote:
> --- In firstname.lastname@example.org, "Jim Miller" <jtmiller2@...>Gian,
> > As a followup:
> > (96K samples per second)(24 bits/sample)(2 channels) =
> > USB1.1 well serviced by a CPU is only good for a net rate of about
> > 8Mbits/second or 1Mbyte/second.
> > Any minor interruptions in service by the CPU or additional load
> to the
> > driver stack will cause overruns/underruns when working with a
> 96/24 stereo
> > input load. Obviously there's no room for an output load as well.
> > USB2 when used at its highspeed setting of 480Mbits will handle
> full duplex
> > 192K/24b audio easily.
> > 73
> > jim ab3cv
> Hi Jim,
> sorry I missed this comment of your.
> It is all clear now. Thanks again.
> I am listening to 40 meters with an SR V6, no BP filter and a windom
> antenna ... It is OK although I have mirror audio below and above
> 7.050 center frequency.
Did you try the audio settings in Rocky to shift one of the audio
channels by one step relative to the other? There is a one sample delay
between the two channels in the SB Live Ext. I don't remember which one
is shifted. Rocky provides -1, 0, and 1 shift of the right channel
relative to the left. The correct setting should eliminate the mirror
image of the signals.
I'm on my desktop right now, so I can't check the settings that I use on
my laptop with the SB Live Ext. However, I know that it does work, and,
with the correct delay, has very good image rejection.