MOTU 8pre Guide de l'utilisateur télécharger pdf (Page 40)

OTHER MAC OS X AUDIO SOFTWARE

Sample rate

Choose the desired overall sample rate for the 8pre

system and your host audio software. Newly

recorded audio will have this sample rate.

Clock Source

This setting is very important because it

determines which audio clock the 8pre will follow.

If you do not have any digital audio connections to

your 8pre (you are using the analog inputs and

outputs only), and you will not be slaving your host

software to external SMPTE time code, choose

Internal.

If you have digital audio devices connected to the

8pre, or if you are not sure about the clock source of

your setup, be sure to read “Syncing optical

devices” on page 20 and “Clock Source” on

page 26.

Optical input and output

To make a 8pre optical input or output available in

your host software, choose ADAT from the optical

input and/or output menu. If you won’t be using

the optical connectors, turn them off.

Phones

This 8pre setting lets you choose what you’ll hear

from the headphone jack. For example, if you

choose Main Outs 1-2, the headphones will

duplicate the main outs. Or you can choose any

other output pair. If you choose Phones, this setting

makes the headphone jack serve as its own

independent output pair. As a result, you’ll see

Phones 1-2 as an additional audio destination in

your host audio software’s audio output menus.

CHOOSING THE MOTU FIREWIRE

COREAUDIO DRIVER

Once you’ve made the preparations described so

far in this chapter, you’re ready to run your audio

software and enable the MOTU 8pre CoreAudio

driver. Check the audio system or audio hardware

conﬁguration window in your software. There will

be a menu there that lets you choose among

various drivers that may be in your system. Choose

the MOTU 8pre from this menu.

Logic Pro and Logic Express

In Logic Pro and Logic Express, go to the

Preferences window, click the Audio tab, click the

Drivers tab and click the Core Audio tab as shown

in Figure 9-2. Choose the MOTU 8pre from the

Driver menu. For information about the I/O Buffer

Size setting, see “Adjusting the audio I/O buffer” on

page 47.

Figure 9-2: Enabling the 8pre in Logic Pro or Logic Express.

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MOTU 8pre Guide de l'utilisateur Page 40

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