From: schaefer@alphanet.ch   
      
   Antenna Man  wrote:   
   >I've been looking for a function generator app from which I can cut a   
   >ringtone or notification tone that has the alternating 1336 and 1800   
   >Hz IMTS "disconnect" tones that the IMTS mobile would send out to the   
   >base when the mobile was 'hung up'.  A second or two of it would play   
      
   Simple generation:   
      
      sox -V -r 48000 -n -b 16 -c 2 imts-disconnect.wav synth 30 sin 1336 sin   
   1800  vol -10dB   
      
   The file is on:   
      
   https://login.alphanet.ch/~schaefer/tmp/imts-disconnect.wav   
      
   You could then adapt the sox command line for your needs.   
      
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