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[Discuss-gnuradio] Brooktree as capture device

From: address@hidden
Subject: [Discuss-gnuradio] Brooktree as capture device
Date: Thu, 15 Jan 2004 12:35:23 +1050

Hello all,

having perused the archives, little seems to have
transpired since this idea was first discussed
in 2002.

I have discovered the btaudio driver at


Subscribers to this list may wish to check out
a brief summary of the driver at:


The important bit is:

"The analog mode supports mono only.
Both 8 + 16 bit.  Both are _signed_
int, which is uncommon for the 8 bit
case.  Sample rate range is 119 kHz
to 448 kHz.  Yes, the number of digits
is correct.  The driver supports
downsampling by powers of two, so
you can ask for more usual sample rates
like 44 kHz too."

It may be that simply using a (possibly
slightly modified) video modulator and
injecting the IF into the audio input
is all that is needed to achieve up to
448Khz sample rates cheaply and easily
on a Brooktree/Conexant card.

I would be interested to hear what others



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