First, I tell you now that jack, through its graphical interface qjackctl, will allow you 'to control all audio streams of all these applications, then what' that's an input, and what 'that's from output, a controller who does (like midi keyboard) and which applications must emit sound. Jack also lets
, mode 'super user to use the real-time that will' in all respects the most 'important to compose your own music. You can do as a normal user, but honestly I never tried. 
Installing jack and qjackctl sudo apt-get install qjackctl
Launch
gksudo qjackctl qjackctl (or alternatively 'sudo qjackctl &')
This will open 'a panel. Go first to 'Setup' and check 'Realtime'. Save and press 'Start'. This will make 'start the jackd server. From now on, until you press' Stop 'all kinds of audio output from your PC must' deal with the presence of this server.
Note for Jack audio and disconnected: When I try to play something you feel sick, have some delays etc.. This is because 'qjackctl settings are standard and do not adapt immediately to the ability' of your sound card. For this you press' Stop ', return to setup and try to change the parameters usually down, And' s a bit difficult (although the more 'of the times, the settings are already' so good ') but once you find the' right setting, save and most do not change '.
Go to the next part of the tutorial
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