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Appendix E: PureWave and SuperChannel

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Appendix E: PureWave and SuperChannel

Appendix E: PureWave and SuperChannel

What is PureWave?

While the Windows WDM audio architecture is fine for consumer applications
such as games and watching DVDs, it is not entirely suitable for professional audio
applications. PureWave is an Echo-exclusive feature that gives your audio
applications a more direct connection to your Echo hardware, allowing your audio
data to pass through unmodified.

Here’s a diagram to illustrate the difference:

WDM PureWave

Microsoft

WDM wave

driver

Audio

Application

Echo

PureWave

driver

Audio

Application

Echo

hardware

Echo24

WDM driver

Microsoft

Windows

kernel mixer

Microsoft

Windows

kernel mixer

Echo24

WDM driver

Echo

hardware

As you can see from the diagram, PureWave mode completely bypasses the
Windows kernel mixer to deliver your audio data directly to the hardware.

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Содержание Gina3G

Страница 1: ...LAYLA 3G GINA 3G Owner s Manual Version 1 0 1 for Windows...

Страница 2: ...oduct near sources of water or moisture such as sinks damp basements leaky roofs etc 6 Heat Your Echo product should be situated away from sources of heat such as heaters or radiators 7 Servicing Do n...

Страница 3: ...the Echo Service Department Unauthorized service repair or modification will void this warranty To obtain factory service Contact Echo Digital Audio Corporation at 805 684 4593 9AM to 4PM Monday throu...

Страница 4: ...Echo Layla Gina PureWave and SuperChannel are trademarks of Echo Digital Audio Corporation ADAT is a registered trademark of Alesis Corporation Tracktion is a trademark of LOUD Technologies Inc Window...

Страница 5: ...WAVE DEVICES 21 DIGITAL MODE 23 CONSOLE3 24 RUNNING THE CONSOLE 24 CONSOLE WINDOW 24 BUS SELECT 26 MASTER OUTPUT BUS CONTROL 26 ANALOG INPUTS 27 DIGITAL INPUTS 28 PLAYBACK STRIPS 28 ADJUSTING PLAYBAC...

Страница 6: ...TI CLIENT AUDIO FAQ 46 APPENDIX C WINDOWS DRIVER MODEL WDM FAQ 49 APPENDIX D AUDIO SOFTWARE GUIDE 52 APPENDIX E PUREWAVE AND SUPERCHANNEL 54 APPENDIX F SURROUND SOUND 64 APPENDIX G AN INTRODUCTION TO...

Страница 7: ...s with collars Layla3G only Two removable rack mount brackets Layla3G only An interface cable Please note The cable included with your Echo3G system is a shielded data cable that has been custom manuf...

Страница 8: ...tter and a motherboard with a genuine Intel chipset OR A genuine AMD Athlon processor and a motherboard with an AMD Via or Nvidia chipset An empty PCI slot A minimum 256Mb of RAM 512Mb highly recommen...

Страница 9: ...e to install the drivers Disable Windows System Sounds We suggest that you turn off your Windows system sounds prior to installing your Echo product Because most system sounds are sampled at very low...

Страница 10: ...ion of this step if necessary 4 Select the PCI slot into which you will install the card You may use any available PCI slot in your computer for the card Unscrew and remove the bracket covering the ex...

Страница 11: ...the back panel of your computer and secure the cable using the built in screws located on both sides of the connector Attach the other end of the cable to the connector on the rear of the interface la...

Страница 12: ...a corresponding volume knob which monitors analog outputs 1 and 2 Layla3G has six analog line inputs s 3 8 and eight analog line outputs on the rear panel These analog inputs s 3 8 operate with an in...

Страница 13: ...put and output connections can be used with balanced or unbalanced cables via the connectors By default the outputs are set to send a 4dBu signal You can switch between 4dBu and 10dBV for each individ...

Страница 14: ...is enabled and the gain range of the trim knob is set to range from 0 to 45 dB The guitar line preamp can support both guitar line level signals The input impedance of each guitar line preamp is 102K...

Страница 15: ...or is a pair of connectors labeled OPTICAL IN and OUT These connectors are used to transmit digital audio data via an optical signal using special digital optical cables with Toslink connectors You ca...

Страница 16: ...andard analog RCA audio cables is not recommended For reliable S PDIF operation 75 ohm coaxial RG59 video cables are recommended MIDI Both Layla3G and Gina3G are equipped with MIDI I O connectors The...

Страница 17: ...ord Clock connector The Word Clock I O uses a BNC connector As with the S PDIF I O a shielded 75 ohm RG 59 coaxial video cable should be used BNC connectors have been widely used in the electronics in...

Страница 18: ...called Tracktion to the Program menu available from the Start button menu Tracktion comes with an HTML User s Guide that you can open from the Help button inside Tracktion So you ll be able to get up...

Страница 19: ...the screen You can learn a lot just by clicking on things and reading the pop up help You can also access a quick start guide and a more detailed help document by clicking on the help button in the b...

Страница 20: ...default wave output and that it is hooked up to some speakers or headphones You can check this setting on the right side of the Settings Audio devices screen of Tracktion 6 Now you re ready to play so...

Страница 21: ...ware or from the Windows control panel The items you see in the list will depend on which product you installed For playback devices you should see Layla3G Gina3G Layla3G 1 2 Analog Out Gina3G 1 2 Ana...

Страница 22: ...al In Layla3G 5 6 Analog In Gina3G 3 4 Digital In Layla3G 7 8 Analog In Gina3G 5 6 Digital In Layla3G 1 2 Digital In Gina3G 7 8 Digital In Layla3G 3 4 Digital In Layla3G 5 6 Digital In Layla3G 7 8 Dig...

Страница 23: ...PDIF S PDIF ADAT 1 2 Layla3G 3 4 Digital not used not used ADAT 3 4 Layla3G 5 6 Digital not used not used ADAT 5 6 Layla3G 7 8 Digital not used not used ADAT 7 8 In other words if you want to play or...

Страница 24: ...e tray icon a red Echo icon will be placed in your system tray This is called the launcher Double clicking the launcher icon will display a console window for each Echo card in your system If you only...

Страница 25: ...e Software that output bus Audio played through the selected channels by an application any analog input and any digital input may be mixed to an output bus Screenshot of Layla3G Console3 main window...

Страница 26: ...re is only one digital output bus because the console is in S PDIF mode When the console is in ADAT mode four digital busses will be displayed representing all 8 ADAT channels Master Output Bus Contro...

Страница 27: ...a button labeled 4 this button allows you to select the nominal level for this analog input Since the button currently reads 4 it is ready to accept a 4 dBu signal Click the button to change this inp...

Страница 28: ...adout below the fader will allow you to numerically enter a fader setting The faders also have gang buttons and their operation is the same as the gang button for the master output bus controls Digita...

Страница 29: ...e on the upper right lets you select your input clock source and digital mode If a given synchronization source input clock is detected the indicator next to the input clock button will turn green You...

Страница 30: ...applications however it is not appropriate for situations where sample accurate synchronization is required Let s take a brief look at the various synchronization types Word Clock Layla3G only The Wor...

Страница 31: ...fiber optic cables do not add noise or interference Layla3G Gina3G can send out or master ADAT clock as well as slave to it If you want Layla3G or Gina3G to slave to an ADAT clock just set the input c...

Страница 32: ...input sync The second Layla3G will slave to the first one and your Layla3Gs will now operate in unison No matter how many devices you are synchronizing the concept is essentially the same You are mer...

Страница 33: ...he Settings dialog gives you six different tabs to choose from Driver Console Digital GSIF Surround and About Driver Here you can do two things lock the sample rate and tell the driver whether or not...

Страница 34: ...n will reduce your audio quality and consume a great deal of CPU power Locking the sample rate forces Windows to only use the hardware at the locked rate In general we recommend you set the sample rat...

Страница 35: ...e most recently opened session file with the current settings By default a directory with your product name is created and all sessions for that product are saved to it Sessions are not cross compatib...

Страница 36: ...g digital copies of a digital copy The S PDIF output defaults to the Consumer format If you are recording from your Echo hardware into a professional DAT deck CD recorder or Mini Disc recorder the dev...

Страница 37: ...ency of GigaStudio in terms of samples Select the value here that provides the best tradeoff between performance and reliability The driver that comes with Layla3G Gina3G fully supports GigaStudio 3 i...

Страница 38: ...e Surround Here you can find the controls for surround sound delay management Please refer to Appendix F Surround Sound under the heading Delay Management for more information Windows XP Service Pack...

Страница 39: ...ole Hot Keys The console supports several hot key functions F1 F12 Selects the output bus F Fast saves the current session L Loads a session S Saves a session T Opens the settings dialog Ctrl click a...

Страница 40: ...out your computer system your audio software and hardware and the problem you are having We do ask you to please read through this manual and the support area of our website before contacting us Also...

Страница 41: ...or 1608 For this error you should try to set up the Windows Installer separately and see if that works First install the base Windows Installer To do that download and run one of the following Windows...

Страница 42: ...he driver for this hardware was already installed Solution It is possible that during the installation process you moved an existing PCI card from one slot to another Windows keeps track of installed...

Страница 43: ...een look at it See if the crash occurred in echo3g sys if it did then it s probably something we need to fix Restart your computer and find the most recent dmp file this is the memory dump It s probab...

Страница 44: ...e simply select the one that is not currently checked Now click the OK button and again try recording to your DAT Note Your Echo product never transmits the SCMS bit regardless of which mode is select...

Страница 45: ...syncing until you reset your Echo hardware s sample rate to one within spec like 44 1 48 or 96kHZ You can do this by playing a wave file of the appropriate sample rate through your Echo product s out...

Страница 46: ...ve application and a DirectSound application all running at the same time It s very flexible Q So what s the catch The catch is this all the software applications using your Echo product at the same t...

Страница 47: ...follow if I want to use multiple audio applications at the same time Set all your applications to the same sample rate You can also use the sample rate lock feature in the Console to help with this T...

Страница 48: ...downside to all this The main downside is that your computer may very well have a hard time keeping up If you fire up three different audio apps at once your computer is probably going to struggle unl...

Страница 49: ...of WDM you can just write one driver that can run on all the different Windows platforms that support all the different audio APIs You should care about WDM and our hardware if you meet any of the fo...

Страница 50: ...audio drivers only support 24 bit audio if the application is using Microsoft s new extensible wave format Many existing apps do not support this format This only affects programs that use the wave M...

Страница 51: ...un it Start All Programs Accessories Entertainment Volume control you should see a volume slider in the Line out section This is the same as the Playback slider in the Echo console Adjusting the Wave...

Страница 52: ...a Setup program Click the Advanced button select Microsoft GS Wavetable SW Synth and unclick the checkbox to set it as Inactive Run Cubase again If your outputs still don t show up you may have some o...

Страница 53: ...eel On the Driver Profiles tab uncheck Access Driver In Mono Be sure to set Stream 16 bit data as to 32 bit PCM left justified You may get a message that your audio devices are not compatible with the...

Страница 54: ...at gives your audio applications a more direct connection to your Echo hardware allowing your audio data to pass through unmodified Here s a diagram to illustrate the difference WDM PureWave Microsoft...

Страница 55: ...machine Note that this only applies to software that uses the wave MME API to communicate with audio hardware Applications that use other APIs such as ASIO or GSIF do not benefit from PureWave as they...

Страница 56: ...s Software Best mode Acid 3 PureWave Acid 4 or higher PureWave or ASIO Cakewalk Pro Audio PureWave Cool Edit PureWave Cubase ASIO eSkimmer PureWave GigaStudio GSIF Kontakt ASIO or PureWave Logic Audio...

Страница 57: ...M This list is far from comprehensive As a general rule if your professional audio software offers ASIO or WDM Direct KS kernel streaming modes then you should use those If it only offers basic WDM mo...

Страница 58: ...Analog Out Layla3G 5 6 Analog Out Layla3G 7 8 Analog Out Layla3G 1 2 Digital Out Layla3G 3 4 Digital Out Layla3G 5 6 Digital Out Layla3G 7 8 Digital Out As you can see there is one wave device for eac...

Страница 59: ...vices SONAR works more efficiently with a multichannel wave device than with multiple stereo wave devices We recommend that you decide how many output and input channels you want to use from SONAR and...

Страница 60: ...audio hardware is presented to Windows applications To access the Wave device configuration window open the console click on the Settings button select the Driver tab and then click on the Advanced b...

Страница 61: ...together Click on it again the two rows are now disconnected You can use the link buttons to build your desired set of Super Channel wave devices Width indicator This just shows you how many channels...

Страница 62: ...s 2000 and XP you will be asked if you want to Update now or Wait until the computer restarts If you choose to Update now your computer will be unresponsive for a period of time after clicking OK whil...

Страница 63: ...restart your computer and everything will work properly For Windows Me you will need to reboot for your changes to take effect Known issues In some cases only the first six channels of a device set to...

Страница 64: ...oft decodes those 8 channels 1 front left 2 front right 3 center front 4 sub 5 rear left 6 rear right 7 center left 8 center right Both Layla3G and Gina3G allow you to decide how many channels you are...

Страница 65: ...to use the SuperChannel feature please refer to Appendix E PureWave and SuperChannel Here we ve used SuperChannel to create an 8 channel analog output audio device for playback of a 7 1 surround mix...

Страница 66: ...select your newly created SuperChannel audio device from the Sound playback Default device dropdown box In this example our SuperChannel device is called Layla3G 1 8 Analog Out Click the Apply button...

Страница 67: ...he speaker configuration you ll be using Here we ve selected 7 1 surround sound speakers from the Speaker setup dropdown box Click the Apply button and then click OK You re all done Now all you have t...

Страница 68: ...r DVD player software as well For this example we will use Intervideo s WinDVD After you ve followed the directions above Open WinDVD Select Properties by right clicking in the WinDVD playback window...

Страница 69: ...0 ms means no delay At sea level sound travels at about 1 foot per millisecond ms so if your speakers are up to 250 feet away from each other then we ve got you covered Keep in mind that these delay...

Страница 70: ...d with bit for bit accuracy In order to use this feature follow these steps Select S PDIF RCA or Optical digital mode in the Echo console Select the digital output of your Echo product in the Windows...

Страница 71: ...he input that is read This number is called a sample The number of samples taken per second is called the sample rate On playback the process happens in reverse The series of numbers is played back th...

Страница 72: ...ming signal can be represented by any of over 16 million possible values The output DACs are also 24 bit again over 16 million values are possible The S PDIF inputs and outputs also support signals wi...

Страница 73: ...able of storing large amounts of data though the performance of hard drives can vary substantially The speed and size of your hard drive will be a major determining factor in how many tracks of audio...

Страница 74: ...Bu is identical to a level of 0dBm Digital signals after they are recorded no longer directly represent any physical quantity such as voltage or power and 0dB is generally used to represent a full sca...

Страница 75: ...cisely equal the noise will completely cancel out In the real world this is not the case and some of the common mode noise will still make it through although at a much reduced level How well an input...

Страница 76: ...high dynamic range Theoretically a 24 bit system has a dynamic range of 144dB and a 16 bit system has a dynamic range of 96dB Two questions immediately come to mind 1 Why does my Echo product only hav...

Страница 77: ...avoid clipping The only way that 96dB would be adequate is if all music were recorded so that the peaks were just under full scale and no compressing or amplification was going to be applied after re...

Страница 78: ...ghted Input Impedance 1 5Kohms Gain Adjustment 10 to 58dB Maximum Input Level at Minimum Gain 9dBu Guitar Line Input Level balanced TRS Dynamic Range 110dB A weighted Input Impedance 102Kohms Gain Adj...

Страница 79: ...ed analog inputs with precision 24 bit 128x oversampling analog to digital converters Eight balanced analog outputs with high performance 24 bit 128x oversampling digital to analog converters S PDIF d...

Страница 80: ...pedance 1 5Kohms Gain Adjustment 10 to 58dB Maximum Input Level at Minimum Gain 9dBu Guitar Line Input Level balanced TRS Dynamic Range 110dB A weighted Input Impedance 102Kohms Gain Adjustment 0 to 4...

Страница 81: ...ersampling digital to analog converters S PDIF digital I O with up to 24 bit resolution ADAT optical digital I O Trim control and level meter for analog inputs Headphone output with volume control On...

Страница 82: ...put level meters 14 input trims 14 installation 9 interface cable 7 M microphone preamp 14 MIDI 16 MIDI time code 16 MTC 16 multi client audio 46 O optical 15 P PCI card installation 10 phantom power...

Страница 83: ...Index 83 Index T technical support 40 troubleshooting guide 41 TRS 76 U unbalanced 75 W WDM 49 website 40 Word clock 17 30...

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