MOTU Audio Express Podręcznik Użytkownika

™ Audio Express User Guide for Windows 1280 Massachusetts AvenueCambridge, MA 02138Business voice: (617) 576-2760Business fax: (617) 576-3609Web site

ABOUT THE AUDIO EXPRESS 10 Coaxial S/PDIF in/out MIDI IN and MIDI OUT connectors 1394 FireWire A connector High-speed USB 2.0 connector Foo

ABOUT THE AUDIO EXPRESS 11 Digital Performer. Therefore, pressing the foot switch is the same as pressing the 3 key. The Audio Express Control Panel

ABOUT THE AUDIO EXPRESS 12 CUEMIX MIXING AND EFFECTS All Audio Express inputs and outputs can be routed to the on-board CueMix 8-bus (4 stereo) digi

CHAPTER 13 2 Packing List and Windows System Requirements PACKING LIST The Audio Express ships with the items listed below. If any of these items are

PACKING LIST AND WINDOWS SYSTEM REQUIREMENTS 14

CHAPTER 15 3 IMPORTANT! Run the Audio Express Software Installer First OVERVIEW Install the Audio Express software first! . . . . . . . . . . . . . .

IMPORTANT! RUN THE AUDIO EXPRESS SOFTWARE INSTALLER FIRST 16 MOTU AUDIO CONSOLE MOTU Audio Console (available in the Start menu) gives you access to

CHAPTER 17 4 Installing the Audio Express Hardware OVERVIEW Here’s an overview for installing the Audio Express: Important note before you begin! . .

INSTALLING THE AUDIO EXPRESS HARDWARE 18 CONNECT THE AUDIO EXPRESS INTERFACE Your Audio Express audio interface is equipped with both a FireWire A (4

INSTALLING THE AUDIO EXPRESS HARDWARE 19 For the most reliable connection, it is recommended that you connect the Audio Express directly to one of y

About the Mark of the Unicorn License Agreement and Limited Warranty on Software TO PERSONS WHO PURCHASE OR USE THIS PRODUCT: carefully read all the

INSTALLING THE AUDIO EXPRESS HARDWARE 20 CONNECT AUDIO INPUTS AND OUTPUTS Here are a few things to keep in mind as you are making audio connections t

INSTALLING THE AUDIO EXPRESS HARDWARE 21 Main outs In a standard studio configuration, the main outs are intended for a pair of studio monitors, but

INSTALLING THE AUDIO EXPRESS HARDWARE 22 CONNECT AND SYNC S/PDIF DEVICES DAT decks and other devices with S/PDIF digital I/O will sync to the Audio E

INSTALLING THE AUDIO EXPRESS HARDWARE 23 direct connection to the power supply harness inside your computer. This is the same power supply harness t

INSTALLING THE AUDIO EXPRESS HARDWARE 24 A TYPICAL AUDIO EXPRESS SETUP Here is a typical Audio Express studio setup. In this example, no external mix

INSTALLING THE AUDIO EXPRESS HARDWARE 25 CONNECT MULTIPLE MOTU INTERFACES You can daisy-chain up to four MOTU FireWire interfaces on a single FireWi

INSTALLING THE AUDIO EXPRESS HARDWARE 26 Adding additional interfaces with a second FireWire bus Third-party FireWire bus expansion products in the f

CHAPTER275 MOTU Audio ConsoleOVERVIEWMOTU Audio Console gives you access to basic Audio Express hardware settings, such as sample rate, clock source a

MOTU AUDIO CONSOLE28‘GENERAL’ TAB SETTINGSSample RateChoose the desired Sample Rate for recording and playback. The Audio Express can operate at 44.1

MOTU AUDIO CONSOLE29S/PDIFThe S/PDIF clock source setting refers to the S/PDIF coaxial input jack on the Audio Express. This setting allows the Audio

3 Contents 5 Quick Reference: Audio Express Front Panel 6 Quick Reference: Audio Express Rear Panel 7 Quick Reference: MOTU Audio Console 9 About the

MOTU AUDIO CONSOLE30The Samples Per Buffer setting also impacts how quickly your audio software will respond when you begin playback, although not by

CHAPTER316 Audio Express Front Panel OperationOVERVIEWThe Audio Express offers front-panel mixing via six rotary encoders and a bank of status LEDs.Pu

AUDIO EXPRESS FRONT PANEL OPERATION32MIXING WITH THE FRONT PANEL CONTROLSThe Audio Express can operate as a mixer, and you can use the knobs on the fr

AUDIO EXPRESS FRONT PANEL OPERATION33Use the following gestures for controlling pan for the (stereo) S/PDIF input, or any inputs that are configured a

AUDIO EXPRESS FRONT PANEL OPERATION34Using the Audio Express as a stand-alone mixerWhen the Audio Express is not connected to a computer, it can opera

CHAPTER357 Cubase, Nuendo, Live and Other ASIO SoftwareOVERVIEWThe Audio Express includes an ASIO driver that provides multi-channel I/O and sample-ac

CUBASE, NUENDO, LIVE AND OTHER ASIO SOFTWARE36Figure 7-1: MOTU Audio Console gives you access to all of the settingsin the Audio Express hardware, inc

CUBASE, NUENDO, LIVE AND OTHER ASIO SOFTWARE37CHOOSING THE MOTU ASIO DRIVEROnce you’ve made the preparations described so far in this chapter, you’re

CUBASE, NUENDO, LIVE AND OTHER ASIO SOFTWARE38DIRECT MONITORINGThe Direct Monitoring option (Figure 7-5) allows you to monitor inputs directly in the

CUBASE, NUENDO, LIVE AND OTHER ASIO SOFTWARE39channels to musicians, or it can serve as an integrated extension of your Cubase/Nuendo mixing environm

4

CUBASE, NUENDO, LIVE AND OTHER ASIO SOFTWARE40

CHAPTER418 SONAR and other WDM SoftwareOVERVIEWThe Audio Express WDM driver provides standard multi-channel input and output for WDM-compatible audio

SONAR AND OTHER WDM SOFTWARE42“MOTU Audio Console” (page 27). The following sections provide a brief explanation of each Audio Express setting for use

SONAR AND OTHER WDM SOFTWARE433 Check the Audio Express inputs and outputs that you wish to use and uncheck the ones you don’t as shown in Figure 8-3

SONAR AND OTHER WDM SOFTWARE44(such as the main outs), the mirrored audio stream is mixed with the phones audio output. For further explanation, see “

CHAPTER459 Reducing Monitoring LatencyOVERVIEWMonitoring latency is that slight delay you hear when you run an input signal through your host audio so

REDUCING MONITORING LATENCY46MONITORING LIVE INPUTThere are two ways to monitor live audio input with an Audio Express: 1) through the computer or 2)

REDUCING MONITORING LATENCY47ADJUSTING THE AUDIO I/O BUFFERA buffer is a small amount of computer memory used to hold data. For audio interfaces like

REDUCING MONITORING LATENCY48Lower latency versus higher CPU overheadThe buffer setting has a large impact on the following things: Patch thru latenc

REDUCING MONITORING LATENCY49Controlling CueMix from the front panelThe knobs on the Audio Express front panel give you direct control over CueMix. F

Quick Reference: Audio Express Front Panel 1. These two Precision Digital Trim™ rotary encoders provide triple-function control over the trim level,

REDUCING MONITORING LATENCY50

CHAPTER5110 CueMix FXOVERVIEWCueMix FX is a cross-platform software application that provides graphic, on-screen control for the Audio Express’s mixin

CUEMIX FX52Many inputs to one output pairIt might be useful to think of each mix as some number of inputs all mixed down to a stereo output pair. CueM

CUEMIX FX53WORKING WITH A MIXEach mix has the following components: A stereo output with master fader Name Master mute (to enable/disable the enti

CUEMIX FX54Input panThe pan knob (Figure 10-1) for each input pans the input across the mix’s stereo outputs. If the input itself is grouped as a ster

CUEMIX FX55Figure 10-2: Typical hardware setup for Talkback and Listenback.Talkback / Listenback mic inputChoose the audio input to which your Talkba

CUEMIX FX56Controlling Talkback and Listenback volumeTo control the volume of the Talkback and/or Listenback mics, adjust their input fader in CueMix

CUEMIX FX57DEVICES MENUIf you are working with more than one MOTU audio interface product, this menu displays all interfaces that are currently on li

CUEMIX FX58Choosing a channel to displayThe FFT window follows the currently chosen Scope channels (Figure 10-1 on page 52). View controlsYou can show

CUEMIX FX59In Min/Max mode, Min and Max set the lowest and highest displayed frequencies (in Hertz). Vertical controls (amplitude axis)The Ve r t ic

1. Connect a MIDI device here using standard MIDI cables. Connect the Audio Express’s MIDI OUT port to the MIDI IN port on the other device. Converse

CUEMIX FX60View controlsThe View controls (Figure 10-11) provide several options for the oscilloscope display.Figure 10-11: View controlsView menuThe

CUEMIX FX61Waveform RecognitionThe Waveform Recognition option searches through new audio data looking for a waveform which most resembles that which

CUEMIX FX62Magnitude is enabled, the trigger will look for both +0.500 and -0.500. You will see a second blue line appear in the display when Magnitud

CUEMIX FX63To adjust the left and right edges of the measurement area, click and drag the blue bars in the graph, or click and drag the blue numbers

CUEMIX FX64screen, try raising the Holdoff level. Once the transient is settled in the display and fairly stable, you may need to adjust the horizonta

CUEMIX FX65X-Y PLOTThe X-Y Plot window (Figure 10-17) graphs the amplitude of a stereo audio signal on a two-dimensional grid. For each unit of time

CUEMIX FX66Choosing a channel to displayThe X-Y Plot follows the currently chosen Scope channels (Figure 10-1 on page 52).View controlsThe View contro

CUEMIX FX67PersistenceThe Persistence controls (Figure 10-21) affect the appearance of data from when it is first displayed until it disappears from t

CUEMIX FX68PHASE ANALYSISThe Phase Analysis window (Figure 10-23 on page 68) graphs frequency versus phase difference versus amplitude of a stereo sig

CUEMIX FX69Line/ScatterChoose either Line or Scatter from the menu in the View section (Figure 10-24) to plot each data point as either a single pixe

CHAPTER 7 Quick Reference: MOTU Audio ConsoleDevice Setup in CubaseDetermines the clock source for your Audio Express. If you’re just using the analo

CUEMIX FX70Horizontal and vertical controlsThe Horizontal and Ver t i c al controls (Figure 10-28) let you scale each axis of the grid and offset it

CUEMIX FX71outside the critical frequency range of the instrument being recorded, you can avoid phase problems among the mic signals.Tun i ng PA sys

CUEMIX FX72TUNERThe Tu n e r window is an accurate and easy to use tuner.Opening the TunerEach MOTU audio interface has its own Tuner window. Choose

CUEMIX FX73Here is a summary of Configurations menu operations:Modifying a configurationThe name of the current configuration is displayed in the CueMix

CUEMIX FX74that is not currently being displayed, CueMix FX will jump to the appropriate tab to display the control you are adjusting.Share surfaces w

CHAPTER7511 MOTU SMPTE ConsoleOVERVIEWThe Audio Express can resolve directly to SMPTE time code via any analog input, without a separate synchronizer.

MOTU SMPTE CONSOLE76auto-detect and switch to the incoming frame rate, except that it cannot distinguish between 30 fps and 29.97 fps time code, or 23

MOTU SMPTE CONSOLE77COMPANYCONFIDENTIALMOTUThe Audio Express cannot freewheel address without clock. Therefore, the Freewheel Address setting will al

MOTU SMPTE CONSOLE78SYNCING TO SMPTE TIME CODEThe Audio Express system can resolve directly to SMPTE time code. It can also generate time code, under

CHAPTER7912 Performance Tips & TroubleshootingThings seems like they are working fine, but the Audio Express then just drops off line, and the comp

8

PERFORMANCE TIPS & TROUBLESHOOTING80Controlling monitoring latencySee chapter 9, “Reducing Monitoring Latency” (page 45).CUSTOMER SUPPORTWe are ha

INDEX81Symbols+main 5, 311394 connector 6, 11, 18, 1924-bitrecording 11third-party software 444-pin FireWire 226-pin FireWire 22828connecting to Audi

INDEX82Main outsjacks 6volume 5, 31volume control 5, 11Main volume 5, 11Master fadermix busses 53Master volume 5, 31Mic/guitar inputstrim 53Mic/instru

CHAPTER 9 1 About the Audio Express Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9The Audio