On 6/30/07 11:25 PM, in article f67hdv$j96$1@nnrp.linuxfan.it, "John Smith
I" <assemblywizard@gmail.com> wrote:

> Radium wrote:
> ...
>
> You miss the simple point, the dc is the carrier ... instead of dc, you
> could put a 1 hz signal on the line and modulate it with your voice,
> indeed, you can put a 30 hz signal on the line and modulate it with your
> voice--if you can tollerate a bad 30 hz hum! But, who knows, perhaps
> you are tone deaf to the 30 hz hum and would like it ...
>
> JS

But you miss the basic point......

The topic was Amplitude Modulation.