On Sat, Nov 20, 1999 at 06:35:34PM -0500, Darxus wrote:
> The soundmodem capabilities built into the linux kernel seem very cool.
> I'm wondering why there aren't drivers that go over 9600 baud ?
>
> I obviously know nothing, but it would seem possible to create a single
> driver that could be set to use any speed ? I'm not overly concerned
> about compatibility with existing hardware TNCs, just maximum packet radio
> speed between two linux boxes.
Sound card bandwidth is going to be a problem at some stage. Given
the maximum sampling rate of 44.1kHz, you can have a maximum bandwidth
of 22.05kHz (and probably half again for better results). How flat
is the input and output response of your sound card? That could cause
a problem too. CPU load will increase too.
The newer PCI sound cards may support higher than 44.1kHz
rates; I don't have one so I don't know.
Hamish
--
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Rising Software Australia Pty. Ltd. http://www.risingsoftware.com/
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