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[linrad] Sound card sample delay
- Subject: [linrad] Sound card sample delay
- From: "Alberto E. Zagni" <turnipsrl.it; azagni@xxxxxxxxxxxxxxxx>
- Date: Sat, 20 Oct 2007 17:47:06 +0200
Hi all,
I am new to the world of Linrad, so my request can be obvious for
many...sorry.
I am using a notebook with Audigy2 ZS PCMCIA audio card running at 96000
sample 16 bit and an SDR-X I/Q receiver.
With other software (Winrad, Rocky) I must enable 1 sample delay on the
right channel to get proper image cancellation.
If I don't delay the right channel it's impossible to get more than 15 / 20
dB of cancellation, while with delay ON I can get easily 70 dB on any
specific frequency and about 50 dB on the 90k band.
I know this problem is typical of most low cost audio card and laptop
internal card, while is absent on the Delta 44.
I see no way of enabling this delay in Linrad (I am using it currently under
Windows). Any help / advice?
Best regards
Alberto I2KBD
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