linuxaudio.org

On Sun, 28 Feb 2010 00:50:07 +0000

Gordon JC Pearce  wrote:
> On Sun, 2010-02-28 at 01:41 +0100, fons@kokkinizita.net wrote:

quoted text
> > On Sun, Feb 28, 2010 at 12:40:00AM +0000, Gordon JC Pearce wrote:

> >

> > > I wanted a very simple SDR with jack inputs and outputs for a

> > > demonstration I was doing.  I had a look at the DSP guts of dttsp and

> > > quisk, and sat down to code.

> >

> > Forgive my ignorance, but what is an SDR ?

>

> Software-Defined Radio.  Basically you downmix incoming RF to the audio

> range with two mixers fed 90 degrees out of phase.  You can then munge

> this in various different ways to tune and demodulate various different

> radio signals.

>

> Gordon MM0YEQ

>

Sounds suspiciously like some form of quadrature demodulator. Rather

like GEC/Sobel introduced with their 1018 TV chassis in the 1960s.

Oh how we laughed ...

--

Will J Godfrey

http://www.musically.me.uk

Say you have a poem and I have a tune.

Exchange them and we can both have a poem, a tune, and a song.

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