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zita-njbridge

The tool zitabridge can connect two jackd over network. A high quality session need a very high data rate. So it is impossible to work via Internet.

A transfer over internet is possible with a radical downsampling. In a test we use:

  • only 1 chanel
  • samplerate of 4000 Hz
  • 16 bit depth

It runs from 2018-09-27-19-..-.. to 2018-09-28-..-.. over approx. 9 hours via Internet by 300 km distance (Berlin-Kassel) without error with a measured transfer rate on 67.9kbit/s.

There are two tools zita-j2n and zita-n2j fromn jack to net and net to jack with the following syntax:

  • zita-j2n --chan <channel> --16bit <host> <port>
  • zita-n2j --chan <channel> --buff <buffersize> <host> <port>

The test conditons uses:

  • zita-j2n --chan 1 --16bit <host> <port>
  • zita-n2j --chan 1 --buff 16 <host> <port>
 Micro     from host               via internet              to host                LP   
     _________________________                     __________________________            
    |                         |                   |                          |    _ /|   
 O--|-> jackd ---> zita-j2n --|-------------------|---> zita-n2j ---> jackd -|-> |_| |   
    |_________________________|                   |__________________________|      \|   
                                                                                         
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