1 `JACK2 <https://jackaudio.org/>`_
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4 .. image:: https://travis-ci.org/jackaudio/jack2.svg?branch=master
5 :target: https://travis-ci.org/jackaudio/jack2
6 .. image:: https://repology.org/badge/tiny-repos/jack-audio-connection-kit.svg
7 :target: https://repology.org/metapackage/jack-audio-connection-kit/versions
9 JACK2 aka jackdmp is a C++ version of the JACK low-latency audio server for
10 multi-processor machines. It is a new implementation of the JACK server core
11 features that aims at removing some limitations of the JACK1 design. The
12 activation system has been changed for a data flow model and lock-free
13 programming techniques for graph access have been used to have a more dynamic
16 - uses a new client activation model, that allows simultaneous client
17 execution (on a SMP machine) when parallel clients exist in the graph (client
18 that have the same inputs). This activation model allows to better use
19 available CPU on a smp machine, but also works on mono-processor machine.
21 - uses a lock-free way to access (read/write) the client graph, thus
22 allowing connections/disconnection to be done without interrupting the audio
23 stream. The result is that connections/disconnections are glitch-free.
25 - can work in two different modes at the server level:
27 - *synchronous activation*: in a given cycle, the server waits for all
28 clients to be finished (similar to normal jackd)
30 - *asynchronous activation*: in a given cycle, the server does not wait for
31 all clients to be finished and use output buffer computed the previous
33 The audible result of this mode is that if a client is not activated
34 during one cycle, other clients may still run and the resulting audio
35 stream will still be produced (even if its partial in some way). This
36 mode usually result in fewer (less audible) audio glitches in a loaded
39 For further information, see the JACK `homepage <https://jackaudio.org/>`_ and `wiki <https://github.com/jackaudio/jackaudio.github.com/wiki>`_. There are also the #jack and #lad chat channels on `freenode IRC <https://freenode.net>`_.