- Ardour will only use a single interface. If you want to use more - than one interface you have two choices: - -
-Ardour is fundamentally designed to be a component in a -pro-audio/music creation environment and standard operating practice -for such setups involves using only a single digital sample "clock" -(something counting off the time between audio samples). This means -that trying to use multiple independent soundcards is problematic, -because each soundcard has its own sample clock, running independently -from the others. Over time, these different clocks drift out of sync -with each other, and cause glitches in the audio. You can't stop this -drift, although in some cases the effects may be insignificant enough -that some people might not care about them.
- + Ardour is fundamentally designed to be a component in a + pro-audio/music creation environment. Standard operating practice + for such setups involves using only a single digital sample + clock (something counting off the time between audio samples). + This means that trying to use multiple independent soundcards is + problematic, because each soundcard has its own sample clock, running + independently from the others. Over time, these different clocks + drift + out of sync with each other, which causes glitches in the audio. You + cannot stop this drift, although in some cases the effects may be + insignificant enough that some people might not care about them. +Thus in an ideal world you should not use multiple independent soundcards but instead use a single device with a single clock and all the inputs, outputs and other features that you need.
-- Of course, a lot of people don't live in an ideal world, and believe that software should make up for this. + Of course, a lot of people don't live in an ideal world, and believe + that software should make up for this.
--Aggregate devices provide a method to use multiple soundcards as -a single device. For example, you can "aggregate" 2 different -8-channel devices so that you can record 16 channels into Ardour. + In CoreAudio, aggregate devices provide a method to use + multiple soundcards as a single device. For example, you can + aggregate two 8-channel devices so that you can record 16 channels + into Ardour.
- +
- If you are using a single typical 3rd party
+ If you are using a single typical 3rd party
audio interface (such as those from Apogee, RME, Presonus, and many
- others), OR you are using JackPilot or a similar
- application to start JACK, you do not need to worry about this.
+ others), or you are using JackPilot or a similar
+ application to start JACK, you do not need to worry about this.
+ You will need to set up an aggregate device only if either
+ of the following conditions are true:
You will need to set up an aggregate device ONLY if either of the following conditions are true:
- -In the case of your builtin audio device, you will need to create +
+ In the case of your builtin audio device, you will need to create an aggregate device that combines "Builtin Input" and "Builtin Output" into one device.
- -The precise instructions for creating an "aggregate device" on OS X have varied from one released to another.
- ++ The precise instructions for creating an aggregate device on OS X + have varied from one released to another. +
Please see the instructions at http://jackaudio.org/faq