MOTU 896HD User's Guide download pdf (Page 55)

DIGITAL PERFORMER

existing ﬁles that do not match this sample rate will

be displayed in the Soundbites window with a red

‘X’ on its move handle to indicate that it cannot be

played. Use the commands in the Soundbites

window mini-menu to sample rate convert the

ﬁles, if desired.

Before running the 896HD at the 4x sample rates,

see “Operation at 4x sample rates (176.4 or

192kHz)” on page 38.

Clock Source

This setting is very important because it

determines which audio clock the 896HD will

follow.

If you do not have any digital audio connections to

your 896HD (you are using the analog inputs and

outputs only), and you will not be slaving Digital

Performer to an external clock source, choose

Internal.

If you are slaving the 896HD to the ADAT Sync or

Word C l o ck i nput connector, choose ADAT 9-pin

or Word Clock In, respectively.

For information about the other clock source

settings, see “Clock Source” on page 39.

If you have digital audio devices connected to the

896HD, see “Making sync connections” on

page 19.

Buffer Size (OS X) / Samples Per Buffer (OS 9)

The Buffer Size setting (Samples Per Buffer under

Mac OS 9) can be used to reduce the delay — or

monitoring latency — that you hear when live audio

is patched through your 896HD hardware and

Digital Performer. For example, you might have

MIDI instruments, samplers, microphones, and so

on connected to the analog inputs of the 896HD. If

so, you will often be mixing their live input with

audio material recorded in Digital Performer. See

chapter 11, “Reducing Monitoring Latency”

(page 85) for complete details.

Optical input and output

To m a ke t h e 8 9 6HD optical input or output

available in Digital Performer, turn them on in the

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

using the optical connectors, turn them off.

Phones

This 896HD setting lets you choose what you’ll

hear from the headphone jack. For example, if you

choose Main Outs, 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 (except when running at 176.4 or

192kHz). As a result, you’ll see Phones 1-2 as an

additional audio destination in Digital Performer’s

audio output menus.

BE SURE YOU HAVE ENOUGH VOICES

Go to the Setup menu (Basics menu under Mac OS

9) and choose MOTU Audio System

Options>Conﬁgure Studio Size. Then check to

make sure you have enough mono and stereo audio

voices to cover the 18 channels of input and 22

channels of output provided by your 896HD —

although the number of channels may depend on

how your 896HD is conﬁgured:

■ 12 channels for analog I/O (including the

headphone out)

■ 2 channels for AES/EBU

■ Zero or 8 channels for optical, depending on

whether you have optical turned off or set to ADAT

optical

For example, if you are using analog only, the

896HD requires a minimum of 12 voices (for 12

channels of output). If you are using analog and

AES/EBU, you need 14 voices.

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MOTU 896HD User's Guide Page 55

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