linuxaudio.org

Am 03.08.2011 22:32, schrieb Renato:

quoted text
> On Wed, 3 Aug 2011 15:50:44 -0400

> Rob  wrote:

>

>> On Wednesday 03 August 2011 14:27, Renato wrote:

>>> Rob  wrote:

>>>> For me, the "everything in real time" JACK way

>>>> of doing things is limiting, not liberating.

>>> you don't have to do everything with low latency settings. AFAIK

>>

>> By "real time", I meant "all the effects are running simultaneously

>> in parallel and what you hear is what you get", not "real-time

>> computing".

>>

>

> ah, ok... but does that depend on jack settings (period and buffer) or

> only on CPU? asking cause I don't know

You can set up Jack to guarantee a maximum roundtrip delay of say: 4

milliseconds. As Jack runs with such settings, all applications in the

session have to keep delivering the desired data fast enough to keep

that deadline.
CPU and company have to process the data so you will find out soon

enough, if their powers suffice to provide the needed data within the

limits, you have set up for Jack....
So if you have just one sampler playing preprocessed data without any

filtering etc, you can set up Jack with very small buffers to get very

little delay between pressing a key on a MIDI-Keyboard and hearing the

played sound. Even on a lesser machine.

If you play with a complete band using Hydrogen for the drums, AMS and

CALF and Yoshimi as Synths and guitarix and Rakarrack for the guitars.

Recording all this seperately in Ardour while some 30 tracks previously

recorded are being heared too, you need much more CPU-Power to keep the

fun alive if Jack has to run with buffers for 4ms delay....
best regards

HZN
>

quoted text
> cheers

> renato

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