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DARLA24



Owner’s Manual Version 2.2 for PC

Darla24 is designed and manufactured in the U.S. by Echo Corporation

Содержание Darla 24

Страница 1: ...1 DARLA24 by Owner s Manual Version 2 2 for PC Darla24 is designed and manufactured in the U S by Echo Corporation ...

Страница 2: ...tain factory service Contact Echo Corporation at 805 684 4593 9AM to 5PM Monday through Friday Pacific Time If necessary you will be given a return authorization number Products returned without an RA number will be refused Echo may at its option require proof of the original date of purchase in the form of a dated copy of the original authorized dealer s invoice or sales receipt Pack the product ...

Страница 3: ...it Menu 20 The Session Menu 21 The Monitors Menu 23 Console Controls 23 Monitor Controls 23 Output Controls 25 Adjusting Record and Playback Levels 25 Synchronizing Multiple Devices 25 Console Keyboard and Mouse Shortcuts 26 Additional Configuration Settings 27 The Monitor During Playback Control 28 SAW Compatibility Mode 28 Show Echo Console on the Taskbar 28 ASIO Driver Installation 29 Installin...

Страница 4: ...Appendix A The Reporter Troubleshooting Guide 36 Appendix B General Troubleshooting Guide 38 Appendix C Resolving Interrupt Conflicts 39 Appendix D Introduction to Digital Recording 44 Appendix E Specifications 48 Index 49 ...

Страница 5: ... s overall audio quality See Installing the Darla24 hardware for further details A compact disc containing the Darla24 Windows 95 Windows 98 Drivers the Echo Reporter system analysis software Syntrillium Software s Cool Edit Pro Special Edition multitrack recording and editing software and demo versions of digital audio recording editing and processing software from a variety of manufacturers The ...

Страница 6: ...a24 The only way to be sure is to install the card in your system and see if it works Please note that we only support Intel CPUs and motherboards with an Intel chipset Your system may or may not work with other CPUs or chipsets Be sure to run the program before attempting to install Darla24 as it can help you avoid installation problems down the road To run the Reporter simply double click on Ins...

Страница 7: ...t resolution Times are expressed in Hours Minutes Seconds Change the Number of Tracks field to 2 and you ll see the maximum length available for a stereo track Change the field to 8 and you ll see the maximum length you ll have for an eight track opus Naturally these multitrack readouts presume uninterrupted linear tracks Your music is likely to contain numerous snippets of data e g the background...

Страница 8: ...ultaneous Tracks heading At the basic level these two fields show you how many simultaneous tracks of playback and recording your system will support For example if the readout was 15 for the Playback field and 8 for the Record field that means your system is capable of playing back 15 tracks while simultaneously recording 8 tracks Note however that the Playback and Record fields are interrelated ...

Страница 9: ...ter tells you your system seems a bit on the weak side Use your audio application in real world conditions then make the determination if your system can keep up with your needs Conversely if the Reporter tells you things look really bad don t waste your time trying to do any serious work If your hard disk is too slow or too small you ll save yourself a lot of frustration by upgrading to a big fas...

Страница 10: ...s before adding your Darla24 If you are uncertain as to whether any of these cards have ever previously been installed in your computer it might be wise to go ahead and perform the remainder of this step anyway It will not harm any of your existing system files and doing so will ensure that you are performing a clean installation On the CD that accompanied your Darla24 is a program called ECHODEL ...

Страница 11: ...4 Because most system sounds are sampled at very low sample rates typically 8 to 11 KHz each time they are played it will cause the sample rate clock on Darla24 to reset to the slower speed To turn off the system sounds first go to the Windows Control Panel which can be found under Settings from the Start button On the control panel you will find an icon titled Sounds After double clicking on this...

Страница 12: ... the expansion slot where you would like to install Darla24 Place the screw in a safe place as you will need it later to complete installation 3 Insure that you have fully discharged all static electricity from your body before handling the Darla24 card This can be done through the use of a grounding strap or more simply by touching your bare hand to the metal casing of the computer s power supply...

Страница 13: ...he cable to the rear of the audio breakout box and fasten the cable securely with the screws NOTE The cable included with your Darla24 system is a shielded audio cable that has been custom manufactured to exacting standards Use of any other cable such as a computer printer cable will result in unacceptably high crosstalk and noise thereby substantially reducing the system s overall audio quality I...

Страница 14: ...ectory of the Darla24 CD ROM Click the Browse button in the Install Wizard this will cause the Install From Disk window to appear In the field labeled Copy manufacturer s files from enter the path D depending on your system configuration your CD ROM drive may use a letter other than D Click on OK to complete the installation Now turn to page 15 If you are using Windows 95 OSR2 After you have inser...

Страница 15: ... drivers are installed you should verify that Windows recognizes them You can do this by checking in the Windows Control Panel as follows Begin by clicking on the Windows Start button Then select Settings followed by Control Panel Now double click on the icon labeled System At the top of the System window you will see a tab labeled Device Manager click on the tab Now locate the line labeled Sound ...

Страница 16: ...use of your difficulties You can now exit back to the Control Panel window to check the Darla24 audio input and output devices that are available In the Control Panel window locate the Multimedia icon and double click on it This will bring the multimedia Properties window into view Select the Audio tab to see a list of available playback and recording devices in the Preferred Device fields ...

Страница 17: ... Audio Playback section will reveal the available Darla24 devices You will be able to select from Darla24 1 2 Analog Playback Darla24 3 4 Analog Playback Darla24 5 6 Analog Playback Darla24 7 8 Analog Playback In the Recording section the following choice will be available Darla24 1 2 Analog Record You can view the Darla24 input and output devices in the Multimedia Properties Audio window ...

Страница 18: ... the devices assignable on a per track basis See your software owner s manual for details on how to make these device assignments Instructions for making these assignments in Cool Edit Pro Special Edition can be found on page 32 of this manual This completes the installation of the Darla24 hardware and software ...

Страница 19: ...tion From the console you can control input and output levels as well as adjust input monitoring The Echo Console software was automatically installed at the same time that you installed the Darla24 drivers for Windows 95 98 If installation was successful you should see a capital letter D in your Windows 95 98 taskbar typically in the bottom right hand corner of your screen Clicking on the D will ...

Страница 20: ...eate an additional iteration of the console program In this way multiple devices Laylas Ginas or Darlas may be controlled using their own dedicated console The second option under the File menu is Exit which closes the current instance of the console The Edit Menu The Appearance option first on the Edit menu lets you customize the look of your console You can change the color of each of the consol...

Страница 21: ...ration of the Console program controls So if you have more than one device Layla Gina Darla or Darla24 attached to your system you can use the same console to control them all using the Mixer Device option to control which device is currently selected The Session Menu Users now have the ability to save and restore any number of different console states A console state contains the state of each us...

Страница 22: ...f pre defined settings The Auto Save Default Session option sixth on the Session menu automatically saves any changes made to the default session whenever the console is closed or a new session opened without prompting the user with This option insures that any changes you make to the default session will never be lost When a check appears on this menu item the feature is enabled The last option o...

Страница 23: ...ow the input channels are the input monitor controls The input monitor controls allow you to monitor the record input signal via any of the available outputs on your Darla24 Each input channel pair has a corresponding monitor output pair directly below it on the console The monitor controls look similar to the controls for input The mute M and solo S buttons are found at the top and the gang G sel...

Страница 24: ...uld first find the monitor control that corresponds to inputs 1 2 the control on the far left directly below the input control for channels 1 2 Clicking on the button within this box labeled 1 2 causes the control box to display the currently selected levels at which inputs 1 2 are being monitored at outputs 1 2 Clicking on the button labeled 3 4 would cause the control box to display the currentl...

Страница 25: ...evices Darla24 is designed to work alongside other audio equipment within a complete Windows system If you are planning on using Darla24 with other audio equipment please note the following The Darla24 Windows drivers echogals drv and echogals inf included in this package supports multiple Darla24s within the same system In addition your new Darla24 will operate with Layla Gina and Darla Darla24 c...

Страница 26: ...ght mouse click Allows user to type in the desired level Ctrl left mouse click Set volume level to zero Ctrl Raise volume of selected control about 5 dB Raise volume of selected control about 1 dB Ctrl Alt Raise volume of selected control about 0 004 dB Ctrl Lower volume of selected control about 5 dB Lower volume of selected control about 1 dB Ctrl Alt Lower volume of selected control about 0 004...

Страница 27: ...the line titled Darla24 by Echo and double click This will bring up the Darla24 Properties window which we saw briefly at the conclusion of Darla24 installation We have previously seen the General screen so let s move on to the Settings screen by clicking on the tab labeled Settings The Monitor During Playback Control In the default mode Darla24 allows you to monitor your input signal whether you ...

Страница 28: ...24 driver SAW expects an equal number of inputs and outputs on Darla24 For SAW compatibility the driver creates a non functional mirror of input channels 1 and 2 making an equal number of ins and outs To insure that Darla24 will operate properly with SAW check the box labeled SAW Compatibility Mode Note This option should only be checked when Darla24 is being used with the SAW application Show Ech...

Страница 29: ...lliseconds using an 8k buffer This may be changed in the dialog box found in menu Audio System then select the ASIO Control panel button Choose a buffer size between 1K and 64K The smaller the buffer the lower the latency At 1K the latency is 25 milliseconds 8 You can change the data and buffer sizes in the ASIO Control panel without leaving VST provided you respond consistently to the dialog boxe...

Страница 30: ...they do not support external synchronization 10 When running VST selecting menu Options Reset Devices followed by pressing the Play button results in no sound Simply press the Stop button twice to reset the position pointer to the beginning of the buffer Then press Play and sound will resume ...

Страница 31: ...OM drive On the CD ROM is a folder called Syntrillium double click on this directory to open it Now locate the file in the Syntrillium directory called SETUP EXE Select this program and run it The SETUP program will copy all of the necessary files to your hard drive It will also add a program group called Cool Edit Pro Special Edition to the Program listings available from the Start button menu Co...

Страница 32: ...assignments however you ll need to set up the Preferred Multitrack Devices To do this click on either of the small numeral 1s at the far left of the track display doing so will bring up the Playback Device window Click on the Device List button you ll see a list of Preferred Multitrack Devices In the Playback fields assign Darla24 analog playback devices 1 2 3 4 5 6 and 7 8 into the 1st 2nd 3rd an...

Страница 33: ...the Mix Gauge seems reasonably complete the meter is beyond of the way filled try reducing the Playback Buffer Size and raising the Background Mixing Priority Level higher values reduce the priority level Conversely if you notice dropouts and see that the Mix Gauge is hovering around the bottom empty try increasing the Playback Buffer Size and lowering the Background Mixing Priority Level The goal...

Страница 34: ...ch Darla24 channel pair This additional mixing demands more processing power from your computer resulting in longer mix times and possible skipping during playback If your system is performing sluggishly you can temporarily assign all tracks to a single channel pair while monitoring to speed things up When doing so it is recommended that you check 32 bit Pre mixes mode in the Settings Multitrack s...

Страница 35: ...pletely We will not respond to you unless you fill out the form in its entirety We cannot help you unless you give us the required information We do ask you to please read through this manual and the support area of our website before contacting us You may find an answer to your problem using the Appendices in the Darla24 owner s manual and or Cool Edit Pro s on screen help Thank you for buying Da...

Страница 36: ...ot have an operational PCI Bios Upgrade to a PCI computer with BIOS version 2 1 or higher The Echo line of sound cards require PCI version 2 1 or later To alleviate this problem please purchase a PCI system version 2 1 or later Your computer has a PCI BIOS but it is version 2 0 or earlier Upgrade to a PCI BIOS version 2 1 or higher The Echo Reporter has determined that your system has no free inte...

Страница 37: ...ther solution is to add a faster hard disk to your system The Echo Reporter has found that your system may not be equipped with a Pentium or faster processor The algorithm we are using for processor detection is known to return faulty values for many of the AMD Cyrix and other non Intel chips so be sure to double check this warning against processor identification that your machine displays each t...

Страница 38: ...indicates that it has found new hardware and wants you to install a driver for it This hardware was working perfectly well before you installed Darla24 and the driver for this hardware was already installed Solution It is possible that during the installation process you moved an existing card from one slot to another Windows keeps track of installed devices not only by peripheral type but also by...

Страница 39: ...interrupt conflicts Hopefully we ll be able to help you solve your problem without too much trouble What is an Interrupt A computer has two ways of telling when a device such as an audio card is ready to exchange data with a program One way is to have the computer periodically ask or poll the device to see if it s ready to transfer new data Since it is important to do the transfer as soon as it is...

Страница 40: ...t with an ISA card Plug and Play and Interrupts When your computer first starts up the BIOS will check each connector slot to see if a Plug and Play card is installed Each Plug and Play card has built into it a list of what resources it requires including how many interrupts it needs and which ones it can use The BIOS will then configure each card and if needed assign an appropriate interrupt It d...

Страница 41: ...irst thing to do if you think you have an interrupt conflict is to determine which interrupt and which legacy card is causing the problem To do this run the Reporter software that came with your Darla24 card For now you can skip over the hard disk performance test since it has nothing to do with interrupts Once the Reporter has finished the diagnostic routine it will provide you with a list of all...

Страница 42: ...blem at hand the next time you add another new Plug and Play card you may wind up with another conflict If you choose this option it is still a good idea to reserve the IRQ as described below Reserving an IRQ within the BIOS Other than removing the offending legacy card the next most effective method is to reserve the IRQ for legacy use within your BIOS To do this you will need to enter the BIOS c...

Страница 43: ...Select the tab labeled Reserve Resources and make sure that Interrupt Request is selected 5 Click on the Add button and enter the IRQ that is being used by your legacy card 6 Windows may prompt you that the IRQ is currently in use by another device Click on Details to see which device Windows currently thinks is using this IRQ It should be Darla24 or whatever device is currently conflicting with y...

Страница 44: ...le rate On playback the process happens in reverse The series of numbers is played back through a digital to analog converter or DAC which converts the numbers back into an analog signal This signal can then be sent to an amplifier and speakers for listening In computers binary numbers are used to store the values that make up the samples Only two characters 1 and 0 are used The value of a charact...

Страница 45: ...se 24 bit ADCs which means that the incoming 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 Darla24 processes signals internally with 24 bit resolution to insure that there is no degradation to the audio signal as it is processed through the system The number of bits available also determines the potenti...

Страница 46: ...rate is lower than the frequency you are trying to record entire cycles of the waveform will be missed and the result will not resemble the proper waveform When the sample rate is too low the resulting sound has diminished high frequency content Figure C Increased sample rates yield a more accurate reproduction of the source signal By the way the circuits that generate the sample rate must be exce...

Страница 47: ...g systems record the data directly to the computer s hard disk Today s hard disks are capable of storing large amounts of data though the performance of hard drives can vary substantially The Echo Reporter program included on the Darla24 CD ROM will give you a general idea what the capabilities of your hard disk are and how much information it can successfully store and retrieve The speed and size...

Страница 48: ...0 003 20Hz 22kHz A weighted Hardware Two TRS balanced analog inputs with precision 24 bit 128x oversampling analog to digital converters Eight TRS balanced analog outputs with high performance 24 bit 128x oversampling digital to analog converters Multiple sample rates up to 96kHz 24 bit data resolution maintained throughout internal signal path 4dBu 10dBV operation selectable per channel Low laten...

Страница 49: ...er service 35 contents 5 Cool Edit Pro installation 31 D Darla24 installation 6 digital to analog converter 44 driver installation 14 E Echo Console 19 Echo Console controls 23 Echo Reporter 5 6 36 37 47 ECHODEL EXE 10 12 H hardware installation 12 I input controls 23 interrupt conflicts 38 39 40 41 L legacy 43 legacy cards 40 41 42 M mixer device command 20 21 monitor controls 23 Monitor During P...

Страница 50: ...REPORTER program errors 36 resolving interrupt conflicts 39 S sample rate 44 46 sample size 45 SAW compatibility mode 28 selecting a slot 12 software Installation 14 static electricity discharging 12 summary screen 9 system requirements 5 T troubleshooting guide 36 38 ...

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