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72

Figure 10-3: In Digital Performer and AudioDesk, choose Setup
menu> Configure Audio System> Configure Hardware Driver to open
the dialog shown above and access the Buffer Size setting. Refer to
your Digital Performer or AudioDesk manual for information about
the Host Buffer Multiplier setting.

Figure 10-4: In Cubase or Nuendo, choose Devices menu> Device
Setup and click VST Audio System to access the window above and
the Audio Buffer Size setting.

Figure 10-5: In Logic Pro or Logic Express, go to the Audio Driver
preferences to access the Buffer Size option shown above.

Lower latency versus higher CPU overhead

The buffer setting has a large impact on the 
following things:

■

Patch thru latency

■

The load on your computer’s CPU

■

Possible distortion at the smallest settings

■

How responsive the transport controls are in 

AudioDesk, Digital Performer or other audio 
software

The buffer setting presents you with a trade-off 
between the processing power of your computer 
and the delay of live audio as it is being patched 
through your software. If you reduce the size, you 
reduce patch thru latency, but significantly increase 
the overall processing load on your computer, 
leaving less CPU bandwidth for things like real-
time effects processing. On the other hand, if you 
increase the buffer size, you reduce the load on 
your computer, freeing up bandwidth for effects, 
mixing and other real-time operations.

Содержание 896mk3

Страница 1: ...MOTU 896mk3 User Guide for Mac 1280 Massachusetts Avenue Cambridge MA 02138 Business voice 617 576 2760 Business fax 617 576 3609 Web site www motu com Tech support www motu com support...

Страница 2: ...utletsandextensioncordsasthiscanresultinariskoffireorelectricalshock 10 Grounding Donotdefeatthesafetypurposeofthepolarizedorgrounding typeplug Apolarizedplughastwobladeswithonewiderthantheother Agrou...

Страница 3: ...U S S warrantthisequipment againstdefectsinmaterialsandworkmanshipforaperiodofTWO 2 YEARSfrom thedateoforiginalretailpurchase Thiswarrantyappliesonlytohardwareproducts MOTUsoftwareislicensedandwarrant...

Страница 4: ...15 Packing List and Mac System Requirements 17 Installing the 896mk3 Hardware 33 Installing the 896mk3 Mac Software 35 MOTU Audio Setup 43 896mk3 Front Panel Operation 53 Digital Performer 57 AudioDe...

Страница 5: ...lash For example if you ve set the MOTU 896mk3 to slave to an external clock such as ADAT but there is no clock signal currently being detected these lights will flash FireWire is a plug and play prot...

Страница 6: ...re equipped with 24 bit D A converters capable of 192kHz These jacks provide stereo 24 bit S PDIF digital input and output at all supported sample rates up to 96 kHz The 896mk3 is equipped with an aut...

Страница 7: ...nterface Check this option if you would like the MOTU AudioSetupicontoappearintheapplication dock as soon as a MOTU FireWire interface is detected switched on plugged in etc In the standard Mac OS X f...

Страница 8: ...8...

Страница 9: ...analog main outs Operation on all analog I O at standard sample rates up to 192 kHz Two banks of optical digital I O that provide 16 channels of ADAT optical at 48 kHz 8 channels of S MUX optical I O...

Страница 10: ...puts and 32 outputs at 44 1 48kHz The phone jack below the MASTERVOL knob is hard wired to mirrors the XLR main outs The PHONES output can operate as an independent output pair or it can mirror any ot...

Страница 11: ...al input and output that supports digital I O at 44 1 48 88 2 and 96 kHz In addition input or output can be sample rate converted to any of these sample rates in situations that call for a different r...

Страница 12: ...phantom power 20 dB Pad The front panel input trim knobs provide independent trim for the eight analog inputs The phantom power switch for each input provides 48V phantom power Up is on down is off T...

Страница 13: ...d high pass filters are also supplied with slopes that range from 6 to 36 dB The EQ employs extremely high precision 64 bit floating point processing The 838mk3 s flexible effects architecture allows...

Страница 14: ...A B O U T T H E 8 9 6 M K 3 14...

Страница 15: ...st 100GB PLEASE REGISTER TODAY Please register your 896mk3 today There are two ways to register Visit www motu com register OR Fill out and mail the included product registration card As a registered...

Страница 16: ...P A C K I N G L I S T A N D M A C S Y S T E M R E Q U I R E M E N T S 16...

Страница 17: ...Etimecodedirectly 22 Syncingtovideoand orSMPTEtimecodeusinga synchronizer 23 SyncingS PDIFdevices 24 Syncingopticaldevices 25 SyncingAES EBUdevices 25 Syncingwordclockdevices 28 ConnectingmultipleMOTU...

Страница 18: ...vel as needed for each input 20 dB pad If the input signal is too hot with the trim turned all the way down engage flip up the 20dB pad switch for the input on the front panel Analog outputs For the X...

Страница 19: ...to review the digital audio clocking issues as explained in Syncing optical devices on page 25 S PDIF If you make a S PDIF digital audio connection to another device be sure to review the digital aud...

Страница 20: ...pression to what you are recording and monitor it via the main outs headphone outs or any other output pair You can control everything from the included CueMix Console software Figure 3 4 A typical 89...

Страница 21: ...system to SMPTE time code from a video deck analog multi track etc Both of the above Synchronization is critical for clean digital I O Synchronization is critical in any audio system but it is especia...

Страница 22: ...Desk Digital Performer or MOTU Audio Setup This setting can also be made in the MOTU SMPTE Console shown below 896mk3 interface SMPTE time code source audio cable bearing LTC LongitudinalTime Code Any...

Страница 23: ...zer such as the MOTU MIDITimepiece AV or DigitalTimepiece Mac running any audio software MOTU MIDITimepiece AV or DigitalTimepiece slaving to video and or SMPTE time code Audio cable bearing LTC Longi...

Страница 24: ...can then freely transfer audio between the 896mk3 and the S PDIF device S PDIF S PDIF DAT deck or other S PDIF device 896mk3 896mk3 Clock Source setting Internal when transferring from the 896mk3 to...

Страница 25: ...io digitally between the 896mk3 and another device that has AES EBU I O connect it to the 896mk3 s AES EBU jacks with balanced AES EBU grade audio cables AES EBU clock and sample rate conversion The 8...

Страница 26: ...EBU input Note the 896mk3 AES EBU output can actually be clocked from a number of different sources In this example it is resolved to the 896mk3 system clock For details about other possible clock so...

Страница 27: ...put clock options Scenario 1 Scenario 2 Scenario 3 Description Simple transfer Rate convert Use word clock 896mk3 clock source setting AES EBU Any setting except AES EBU Word Clock Sample rate convers...

Страница 28: ...mplest case you have two devices and one is the word clock master and the other is the slave as shown below in Figure 3 17 and Figure 3 18 Figure 3 17 Slaving another digital audio device to the 896mk...

Страница 29: ...eWire bus Multiple interfaces in MOTU Audio Setup MOTU Audio Setup displays the settings for one interface at a time To view the settings for an interface click its tab as shown below in Figure 3 20 F...

Страница 30: ...For each slave interface click its tab and choose the master interface from the Clock Sourcemenu as demonstrated below in Figure 3 21 This causes the slave interfaces to resolve to the master interfac...

Страница 31: ...s to conserve FireWire bus bandwidth At the 2x samples rates 88 2 or 96kHz and 4x sample rates 176 4 and 192kHz you can operate no more than two FireWire interfaces on a single FireWire bus Adding add...

Страница 32: ...I N S T A L L I N G T H E 8 9 6 M K 3 H A R D W A R E 32...

Страница 33: ...oftware the 896mk3 will appear as a choice for audio inputs and outputs in your software All MOTU audio hardware including our PCI systems and other FireWire and USB interfaces ships with CoreAudio dr...

Страница 34: ...TE time code and to generate SMPTE for striping regenerating or slaving other devices to the computer For details see chapter 12 MOTU SMPTE Console page 103 AUDIODESK WORKSTATION SOFTWARE AudioDesk is...

Страница 35: ...edal 41 ACCESSING THE 896MK3 SETTINGS There are several ways to access MOTU Audio Setup settings Click the MOTU Audio Setup icon in the dock Press on the MOTU Audio Setup dock icon to open the menu sh...

Страница 36: ...playback The 896mk3 can operate at 44 1 the standard rate for compact disc audio 48 88 2 96 176 4 or 192KHz If you are operating at a sample rate between 44 1 and 96kHz make absolutely sure that all o...

Страница 37: ...896mk3 system on its internal clock and then slave the DAT deck to the 896mk3 via the AES EBU connection usually DAT decks slave to their AES EBU input when you choose the AES EBU input as their recor...

Страница 38: ...ed in Optical input output on page 39 The TOSLINK clock source setting refers to the clockprovidedanopticalS PDIFdeviceconnected to the 896mk3 s optical input This setting can be used to slave the 896...

Страница 39: ...you d like to route the Main Out stereo pair to the PHONES jack Choose Phones if you would like the headphones to serve as their own independent output which you can access as an independent output d...

Страница 40: ...S EBU is disabled entirely at the 4x samples rates 176 4 and 192kHz Each option is explained below None To make the AES EBU output sample rate match the System sample rate choose None Figure 3 16 on p...

Страница 41: ...ed switched on plugged in etc Edit Channel Names Click the Edit Channel Names button to open the Channel Names window Figure 5 3 This window lets you edit the names of the 896mk3 inputs and outputs as...

Страница 42: ...M O T U A U D I O S E T U P 42...

Страница 43: ...96mk3Setupmenu 46 Audiomenu 47 CueMixmenu 47 Inputsmenu 51 Outputsmenu 51 Mixesmenu 52 Reverbmenu 52 Stand aloneoperation 52 ANALOG INPUT CONTROLS The 896mk3 front panel analog input controls Figure 6...

Страница 44: ...ike the MAIN OUT phone jack and the PHONES jack to output the same signal assign the PHONES output to mirror the main outs In this configuration both the MASTERVOL and the PHONES volume knobs control...

Страница 45: ...ROTARY ENCODERS All of the knobs shown in Figure 6 6 are push button digital rotary encoders In many cases you can either push the knob or turn it to make a setting or toggle the LCD display dependin...

Страница 46: ...me Turn PAGE to change the currently flashing letter Once you ve named the preset pushVALUE to save it turn it again to choose the desired preset slot you wish to save it to 1 16 and the push again to...

Страница 47: ...and support 2x operation Turn theVALUE knob to select an optical port and push the knob to toggle between the Type I and Type II setting CUEMIX MENU To access the CUEMIX menu push the PARAM knob until...

Страница 48: ...3 on page 80 as well as the settings in the Channel tab Figure 11 8 on page 84 Turn the PARAMETER knob to scroll through individual parameters such as the frequency for the current band of EQ This is...

Страница 49: ...s menu Choosing a mix bus Once you see the MIX menu Figure 6 11 in the LCD turn the CHANNEL knob to select the desired mix that you wish to edit This is roughly equivalent to choosing a mix in the Mix...

Страница 50: ...y of Mix menu settings see Mixes menu on page 52 The REVERB menu Push the CHANNEL button repeatedly until you see REVERB in the channel section of the LCD Figure 6 12 This is similar to accessing the...

Страница 51: ...REQ DYN Dynamics ENABLE COPY PASTE RESET COMP Compressor ENABLE MODE THRESH RATIO ATTACK RELEASE TRIM LEVELER ENABLE MODE REDUCE MAKEUP REVERB SEND SEND PAN mono only CHANNEL PAGE PARAM OUTPUTS Main A...

Страница 52: ...y time from the front panel CHANNEL PAGE PARAM MIXES Mix 1 Mix 2 etc MASTER ASSIGN MUTE FADER COPY PASTE RESET REVERB SEND RETURN ANALOG 1 2 if stereo MUTE SOLO BAL WID BALANCE WIDTH FADER ANALOG 1 AN...

Страница 53: ...a MIDI Timepiece AV or Digital Timepiece for synchronization be sure they are present in Audio MIDI setup THE 896MK3 SETTINGS Choose the 896mk3 as your audio input output device by choosing Configure...

Страница 54: ...be mixing their live input with audio material recorded in Digital Performer See chapter 10 Reducing Monitoring Latency page 69 for complete details Phones This 896mk3 setting lets you choose what yo...

Страница 55: ...the front panel of the 896mk3 until peaks in the level meter are as high as possible without clipping hitting zero dB Phones 1 2 If you ve chosen to treat the 896mk3 headphones as an independent outpu...

Страница 56: ...hoosing a clock source for optical connections on page 19 and Making sync connections on page 21 If you don t have any digital audio devices connected to the 896mk3 digital audio phase lock does not a...

Страница 57: ...ware installers will properly install and update everything for you If you are using a MIDI Timepiece AV or Digital Timepiece for synchronization be sure they are present in Audio MIDI setup THE 896MK...

Страница 58: ...chapter 10 Reducing Monitoring Latency page 69 for complete details Phones This 896mk3 setting lets you choose what you ll hear from the headphone jack For example if you choose Main Out 1 2 the headp...

Страница 59: ...clipping hitting zero dB Phones 1 2 If you ve chosen to treat the 896mk3 headphones as an independent output you ll see Phones 1 2 in AudioDesk s output menus Audio tracks assigned to this output pai...

Страница 60: ...directly on page 22 Resolving to video and or time code with a dedicated synchronizer To resolve your 896mk3 to video and or SMPTE time code using an additional synchronization device use the setup sh...

Страница 61: ...nd output ports be sure to follow the procedure in Preparing MIDI input and output on page 61 RUN MOTU AUDIO SETUP Before you run your host audio software launch MOTU Audio Setup to configure your 896...

Страница 62: ...pair choose Main Outs Return Assign In your OS X host audio software audio input menus you ll see an 896mk3 input called Return 1 2 This is a stereo feed from the 896mk3 that matches the signal of one...

Страница 63: ...nd choose MOTU 896mk3 from the Audio Output and Audio Input menus as shown below in Figure 9 4 For information about the Optimize for setting see Adjusting the audio I O buffer on page 71 Figure 9 4 E...

Страница 64: ...o software For other audio applications the procedure is similar to that shown above Consult your owner s manual for further information WORKING WITH 896MK3 INPUTS AND OUTPUTS Once you ve enabled the...

Страница 65: ...e that optical A is operating with the same format Input 88 2 96 kHz Channels List position Comment Analog 8 1 8 AES EBU 2 9 10 SPDIF 2 11 12 Stereo return 2 13 14 See Return Assign on page 62 Reverb...

Страница 66: ...iguration that goes hand in hand with your host project be sure to use the file save features in CueMix FX to save the 896mk3 settings as a file in your host project folder for instant recall of all s...

Страница 67: ...vices use the setup shown in Syncing to SMPTE time code directly on page 22 Resolving to video and or time code with a dedicated synchronizer If your host software has the ability to synchronize to SM...

Страница 68: ...O T H E R M A C O S X A U D I O S O F T W A R E 68...

Страница 69: ...dware The 896mk3 even provides effects processing EQ compression and reverb which can be applied on input output or even at the bussing stage just like a conventional mixer For details see CueMix FX h...

Страница 70: ...out 896mk3 based effects processing EQ compression or reverb See CueMix FX hardware monitoring later in this chapter for details on how to use CueMix FX with your audio software or with the included C...

Страница 71: ...Mac OS X audio I O buffer size is handled by the host audio application not the 896mk3 Core Audio driver Most audio software applications provide an adjustable audio buffer setting that lets you cont...

Страница 72: ...ower latency versus higher CPU overhead The buffer setting has a large impact on the following things Patch thru latency The load on your computer s CPU Possible distortion at the smallest settings Ho...

Страница 73: ...al mixer When enabled CueMix activates hardware patch thru in the 896mk3 itself CueMix FX has two important benefits First it completely eliminates the patch thru delay reducing it to a small number o...

Страница 74: ...y be merged to the output Controlling CueMix FX from within AudioDesk or Digital Performer To turn on CueMix FX in AudioDesk and Digital Performer 1 From the Setup menu choose Configure Audio System I...

Страница 75: ...scanberouted tothe on board CueMix FX 16 bus 8 stereo bus digital mixer driven by hardware based DSP with 32 bit floating point precision The CueMix FX mixer allows you to apply no latency effects pro...

Страница 76: ...plications or projects CueMix routing can operate without the computer allowing the 896mk3 to operate as a portable stand alone mixer with effects CUEMIX FX SOFTWARE INSTALLATION CueMix FX is an appli...

Страница 77: ...ves you access to settings for individual 896mk3 inputs or input pairs such as phase trim EQ and dynamics processing Each input also includes a send to the 896mk3 s global reverb processor These setti...

Страница 78: ...l current available enabled 896mk3 output pairs If a bus is already assigned to an output pair the bus name appears next to the output pair name to indicate that the output pair is already taken by a...

Страница 79: ...nd edit parameters in the channel settings section of the CueMix FX window Figure 11 7 on page 84 Clicking the mix bus master fader focus button brings the assigned output into focus if there is one I...

Страница 80: ...need to record a completely unprocessed input signal do not apply any changes to it in the Input tab The only exception to this is the reverb send which simply splits the input signal and feeds a copy...

Страница 81: ...l The controls in the EQ Compression section of the Inputs tab Figure 11 3 let you edit EQ and compression settings within the context of the channel strip This is ideal when you are comparing setting...

Страница 82: ...3 feeds the input signal to the 896mk3 s global reverb processor where it is merged with any other signals being fed to the reverb The reverb s output can then be fed back into a mix or output pair T...

Страница 83: ...x to eliminate the possibility for feedback loops created by reverb send return loops See Split point on page 96 The output reverb return Figure 11 6 feeds the output of the 896mk3 s global reverb pro...

Страница 84: ...iew the Channel tab settings for the channel Figure 11 8 The Channel tab Signal flow Settings in the Channel tab occur just before the EQ dynamics and reverb sends in the Input tab channel strip Figur...

Страница 85: ...t Clip begins to engage around 2 dB just below zero whenV Limit is turned on Soft Clip begins to engage around 10 dB just below 12 dB Talkback section Click the Talkback or Listenback button Figure 11...

Страница 86: ...y legendary British large console EQs the 896mk3 Vintage EQ section Figure 11 10 gives you the look feel and sound of the most sought after classic equalizers Five bands of center frequency parametric...

Страница 87: ...e current channel being edited the channel that currently has the focus EQ filter one of five center bands of EQ that can be independently enabled and programmed Filtertype Lets you choose from one of...

Страница 88: ...ve EQ filters The EQ filters have three parameters Q The Q setting does not have a unit of measurement Rather it is the ratio of the filter s center frequency to the bandwidth of the filter In additio...

Страница 89: ...stments in gain or reduction produce relatively high Q This EQ style is best for situations that call for precise EQ adjustments requiring the maximum amount of individual parameter control For more g...

Страница 90: ...ng more musical More specifically this style emulates the classic Neve EQs their modern derivatives and later SSL G series EQs Many current popular outboard boutique EQs exhibit this same gain Q relat...

Страница 91: ...Qs In some situations this form of accurate clean shelving can sound harsh especially when compared to legacy analog EQs To soften the results the overshoot is increased as Q is increased as shown Fig...

Страница 92: ...or example with a maximum gain setting of 20dB the loss in the overshoot region is 10 dB Overshoot curves are symmetrical for both cut and boost Low pass and high pass filters TheVintage EQ low and hi...

Страница 93: ...duce distortion The rate at which the attenuation is added is determined by the Attack parameter Likewise when the input level falls below the Threshold the attenuation is removed gradually The rate a...

Страница 94: ...ing light The the Automatic Gain Control AGC circuit of the LA 2A uses a vintage opto coupler known by its model number T4 The T4 contains an electroluminescent panel ELP and photoresistor mounted so...

Страница 95: ...t is turned on Therefore when you enable the Leveler give it a moment to settle before you begin processing signals with it The Meters tab The Meters tab Figure 11 22 serves as a comprehensive meter b...

Страница 96: ...the reverb processorviatheircorrespondingsends discussed earlier in this chapter Mono or stereo inputs Figure 11 3 on page 80 Mix bus output Figure 11 2 on page 78 Outputs Figure 11 6 on page 83 Reve...

Страница 97: ...ifferent types of spaces The Size and Level parameters let you control the size of the room and the strength of the initial reflections Here s a tip try using initial reflections without any subsequen...

Страница 98: ...5 x 1 EQ band and Leveler 4 x 1 EQ band require about the same DSP resources for a mono or stereo channel SOLO LIGHT The Solo light Figure 11 1 illuminates when any input in the current active mix bu...

Страница 99: ...ngaging Talkback and Listenback To engage Talk back or Listenback press on the Talk or Listen buttons Figure 11 26 and then release to disengage Talkback and or Listenback is engaged for as long as yo...

Страница 100: ...r in dock icon This CueMix FX File menu item applies to other MOTU interfaces and has no effect on the 896mk3 EDIT MENU Undo Redo CueMix FX supports multiple undo redo This allows you to step backward...

Страница 101: ...owever this menu provides one extra option that is exclusive to CueMix FX Follow Active Mix This menu item when checked causes the headphone output to mirror the output of the current mix being viewed...

Страница 102: ...ol surface with any other software CueMix Control Surfaces CueMix FX includes support for the following control surface products Mackie Control Mackie HUI Mackie Baby HUI Use the sub menu commands in...

Страница 103: ...te SMPTE for striping regenerating or slaving other devices to the computer CLOCK ADDRESS The Clock Address menu Figure 12 1 provides the same global Clock Source setting as in MOTU Audio Setup Clock...

Страница 104: ...nput that the 896mk3 listens to for time code Freewheel Address Freewheeling occurs when there is a glitch or drop out in the incoming time code for some reason The 896mk3 can freewheel past the drop...

Страница 105: ...me click directly on the SMPTE time code display in the Generator section and type in the desired start time Or drag vertically on the numbers Figure 12 2 Setting the time code start time Regenerate T...

Страница 106: ...M O T U S M P T E C O N S O L E 106 RESOLVING CUBASE OR NUENDO TO SMPTE TIME CODE To resolve your 896mk3 and Cubase or Nuendo to SMPTE time code use the setup shown in Figure 3 8 on page 22...

Страница 107: ...nter the same artifacts you may want try using another drive in your computer Clicks and pops can also occur when the drive is severely fragmented the disk drivers are outdated or other drive related...

Страница 108: ...w motu com support Please provide the following information to help us solve your problem as quickly as possible The serial number of the 896mk3 system This is printed on a sticker placed on the botto...

Страница 109: ...C Channel tab 84 reverb settings 85 Clear Peaks 100 Clip Hold Time 7 40 Clipping 5 Clock 192kHz operation 37 Clock source 7 21 37 AudioDesk 58 other audio interfaces 38 SMPTE setting 38 Clock status L...

Страница 110: ...t 39 HUI 102 I iMovie audio input output 39 In menu LCD 48 Infinite freewheel 104 105 Input gain 12 Input level meters 5 Inputs analog 6 naming 79 80 optical 6 pan 79 reverb send 82 S PDIF RCA 6 tab 8...

Страница 111: ...y 97 Presets naming saving in LCD 46 Programmable meters 7 40 Propellerhead Reason 64 Punch in out 12 Q Q 88 R Ratio compressor 93 Reason 64 Regenerate 105 Registration 15 Release Dynamics 93 Return A...

Страница 112: ...ting 38 connecting 18 Trim 18 81 Trim input 12 Troubleshooting EQ knobs don t work 82 feedback loop 55 59 62 Type I II optical mode 47 U UltraLite connecting to 896mk3 30 Unbalanced analog 18 Undo Red...

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