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Storing Digital Data 

 
Once the waveform has been transformed into digital bits, it must be stored. 
When sampling in stereo at 48kHz using a 20-bit word size, the system has 
to accommodate 1,920,000 bits per second. Though this is a lot of data, it is 
well within the capabilities of personal computers. 
 
Most computer-based digital recording 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 Gina 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 of your hard drive will be a major determining factor in how many 
tracks of audio you will be able to simultaneously record and playback.  

Содержание Gina

Страница 1: ...1 GINA by Owner s Manual Version 1 6 for PC Gina 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...

Страница 3: ...Controls 22 EasyTrim Automatic Gain Control 23 Monitor Controls 24 Output Controls 25 Adjusting Record and Playback Levels 26 Setting Clock Sources and Destinations 26 Synchronizing Multiple Devices...

Страница 4: ...er Service 38 Appendix A The Reporter Troubleshooting Guide 39 Appendix B General Troubleshooting Guide 41 Appendix C Resolving Interrupt Conflicts 44 Appendix D Introduction to Digital Recording 49 A...

Страница 5: ...all audio quality See Installing the Gina hardware for further details A compact disc containing the Gina Windows 95 Windows 98 Drivers the Echo Reporter system analysis software Syntrillium Software...

Страница 6: ...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 o...

Страница 7: ...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...

Страница 8: ...ltaneous 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...

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 Repo...

Страница 10: ...ers before adding your Gina 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 st...

Страница 11: ...ecause 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 Gina to reset to the slower speed To turn off the...

Страница 12: ...expansion slot where you would like to install Gina 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 f...

Страница 13: ...ndards 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 If longer cable le...

Страница 14: ...Gina 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...

Страница 15: ...e 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 Set...

Страница 16: ...se of your difficulties You can now exit back to the Control Panel window to check the Gina audio input and output devices that are available In the Control Panel window locate the Multimedia icon and...

Страница 17: ...n the Control Panels Multimedia Audio Playback section will reveal the available Gina devices You will be able to select from Gina 1 2 Analog Playback Gina 3 4 Analog Playback Gina 5 6 Analog Playback...

Страница 18: ...ing your audio record editing software with 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 the...

Страница 19: ...c input gain adjustment circuitry The Echo Console software was automatically installed at the same time that you installed the Gina drivers for Windows 95 98 If installation was successful you should...

Страница 20: ...he 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 console elements change the fonts used or choo...

Страница 21: ...ession menu lets you delete any session The Select Default Settings option fifth on the Session menu lets you change to default session settings This is not the same as opening the default session Rat...

Страница 22: ...rols section below for a complete description of how the monitor feature works Console Controls Let s take a look at the control surface The input controls are located in the upper left portion of the...

Страница 23: ...t channel s EasyTrim button labeled T on the console Now begin playing the material you plan to record In order for the EasyTrim function to work properly it is important that you play the loudest mat...

Страница 24: ...r control has a series of numbered buttons These buttons allow you to select which output channel pair controls are displayed so you can adjust them The monitors are one of the most powerful functions...

Страница 25: ...building the monitor mix that you want for each output Let s say you have four musicians each one listening to their own discrete output pair Clicking Group Mode then clicking on output button 1 2 on...

Страница 26: ...sense which input clocking options are available and automatically disable those that are unavailable If you are unsure which clock synchronization selections are appropriate for your installation be...

Страница 27: ...d that your S PDIF recordings contain pops or skips be sure that you have selected S PDIF as your input clock Now let s take a look at some possible configurations and how you might set them up from a...

Страница 28: ...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...

Страница 29: ...a Properties window which we saw briefly at the conclusion of Gina installation We have previously seen the General screen so let s move on to the Settings screen by clicking on the tab labeled Settin...

Страница 30: ...rence between the two is in the implementation of the SCMS copy protection bit which in the consumer format prevents the user from making digital copies of a digital copy Gina s S PDIF output defaults...

Страница 31: ...he box labeled SAW Compatibility Mode Note This option should only be checked when Gina is being used with the SAW application Show Echo Console on the Taskbar The last selection on the Settings scree...

Страница 32: ...32 Only those clock sources that Gina determines to be available will be enabled for selection...

Страница 33: ...sing 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 th...

Страница 34: ...lecting 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 P...

Страница 35: ...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 Select this program and run it The SETUP pro...

Страница 36: ...d 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 se...

Страница 37: ...he 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 le...

Страница 38: ...h Gina 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...

Страница 39: ...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...

Страница 40: ...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...

Страница 41: ...her 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 de...

Страница 42: ...Windows will no longer recognize the card as one for which a driver is installed You must re install the driver for the card that was moved Problem You are unable to get your DAT recorder to recognize...

Страница 43: ...Panel and again try recording to your DAT Important note Gina never transmits the SCMS bit regardless of which mode is selected Problem When the Windows start up sound plays it plays at an altered pit...

Страница 44: ...l Problem Recordings made using the S PDIF port contain occasional pops or skips Solution When recording with the S PDIF port you must manually select the S PDIF clock as the input clock This can be d...

Страница 45: ...rupt 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 e...

Страница 46: ...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...

Страница 47: ...st 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 Gina ca...

Страница 48: ...lem 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...

Страница 49: ...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 th...

Страница 50: ...e 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 ca...

Страница 51: ...ignal can be represented by any of 1 048 576 possible values The output DACs are also 20 bit again 1 048 576 values are possible The S PDIF inputs and outputs support signals with up to 24 bit resolut...

Страница 52: ...e 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 s...

Страница 53: ...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 Rep...

Страница 54: ...th precision 20 bit 128x oversampling analog to digital converters Eight unbalanced analog outputs with high performance 20 bit 128x oversampling digital to analog converters S PDIF digital I O with u...

Страница 55: ...nts 5 consumer mode 30 42 consumer output setting 30 43 contacting customer service 39 contents 5 Cool Edit Pro installation 35 D digital to analog converter 50 driver installation 14 E EasyTrim 23 Ec...

Страница 56: ...PORTER program errors 40 resolving interrupt conflicts 45 S S PDIF 27 S PDIF cabling 13 S PDIF output mode 30 S PDIF output setting 30 43 S PDIF recording 42 S PDIF resolution 51 sample rate 50 52 sam...

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