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LF: DSP app to multiply tone by 4 ?

To: <[email protected]>
Subject: LF: DSP app to multiply tone by 4 ?
From: "Graham" <[email protected]>
Date: Mon, 25 Feb 2013 12:24:14 -0000
Importance: Normal
Reply-to: [email protected]
Sender: [email protected]
DSP app  to  multiply   tone  by  4  ?
 
 
One thing that one of the PA (Dutch PA) stations spotted , is the 477
band is a handy divide by 4 from 1.9MHz .. and if you use two
flip-flops , you can divide from 1.9 to 477

Setting the rtty shift x 4 in fl digi 340 HZ , then gives 85 Hz at 477

A problem with the multi tone modes , unless its possible to write a 'dsp'
app , that multiplies the tones by 4 , single tone fixed amplitude in
real-time or slightly after ,
 
That would open up all the (non linear) modes
to 477 , X2 for 'logic' drive amps, X2 drive, and X4 for conventional on
frequency amps ?
 
Q  Is this  a  possibility ?
 
Could  something  be coded  , that  either  looked  like a  sound  card  , or  took  audio in , and outputted  a  multiplied  frequency  by  2  or  4 
 
Could  have delay  as  long  as  the  delay  was   fixed ?
 
G..
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