ВУЗ: Не указан
Категория: Не указан
Дисциплина: Не указана
Добавлен: 08.09.2024
Просмотров: 143
Скачиваний: 0
If you are using just one external audio device (or an internal one such as a sound card) everything is easy. This device becomes the clock master (usually automatically) and the computer does what it has to do.
If you have more than one device, commonly a sound card and one or more external audio thingies, life is more complicated. As before, you have to define one device as being the clock master and must synchronize the others to it so that they all run at the same sample rate. This is made more difficult by the fact that some devices (sound cards especially) cannot accept synchronization and must be made the clock master, obliging the other devices to be synchronized to them. All audio devices used together in a system
MUST be synchronized to run at the same sample rate.
Synchronization is typically achieved by either hardware or software measures:
Hardware synchronization is achieved by connecting AES, S/P DIF or Wordclock cables from the outputs of the clock master to a corresponding input of the other devices and configuring these devices to use this signal as a sync source.
Software synchronization employs the use of sample rate conversion (which uses a lot of computer power) to make disparate devices compatible with the master sample rate. It is available on Macs when creating Aggregate Devices, or on some Windows applications using WDM drivers. Again, see your computer manuals for more details on these.
The FireWire link contains a sample clock to which the H8000FW can be synchronized if all other approaches fail, but this is not recommended except as a last resort as the quality of this clock is not high and it can increase jitter or other bad things. Note that on Macs this is not always available.
So, to sum up:
One audio hardware device must be configured as the clock master
Any other audio devices in the system must be synchronized to the clock master by (preferably) hardware or software means.
158
I n s t a l l i n g D r i v e r s o n Yo u r P C
This section describes how to install the software drivers required to operate the H8000FW Multi-Channel Effects System with your Windows XP or Vista-based PC. Those hip Mac people should skip ahead.
If you are updating your drivers with new ones, read the release notes supplied with the update. If an H8000FW update is also required, perform this before continuing.
Your Windows-XP or Vista should have the latest service packs installed. If you are not sure, go to http://update.microsoft.com/windowsupdate to check that your PC is up to date. We recommend that you keep your machine up to the standard Microsoft specification – we cannot guarantee results with outdated, beta or experimental versions of Windows.
You may see cosmetic differences between the screens below and those on your computer, depending on its settings and operating system. You may also see interchangeable references to either “H8000 Audio” or “Eventide Dice.”
Before starting, be sure your PC is equipped with a Firewire port. If your PC did not come equipped with a Firewire port, you must purchase a Firewire PCI card and install it. See the recommendations under Check your FireWire Card on page 173.
Leave the FireWire cable unconnected at this time.
Locate the drivers file, EventideInstaller.exe (setup.exe on older drivers). This will either be on the CD supplied with your H8000FW or contained within a compressed zip file downloaded from the Eventide Web site. If the latter, open (extract) the zip file and copy the .exe file to your hard disk. The latest version of the driver can always be found on the Web Site.
159
Run the EventideInstaller.exe file by clicking on it. You will see the screen below. The long number after “Dice” may be different.
Follow the instructions and hit Next ..
Unless you have a real reason to do otherwise, accept the suggested folder and hit next. If you get “Folder Exists” message, answer “Yes”.
160
Leave the “Create a ..” box checked and hit Next. When you see the box below, hit
Install.
Please wait ….
After about a minute you will see the following screen. Hit Continue ….
(For the easily frightened - Windows Logo testing has various requirements that are inappropriate for professional audio equipment so these drivers do not need to comply).
A browser window will also open, showing the release notes for this version of the drivers. These show the issues resolved by this and previous driver releases. They may appear rather technical but can provide useful information.
161
After about a minute, you will see the box below. You MUST restart your computer before continuing, but need not do it immediately if you have other work to do.
Insert the Firewire cable into your PC’s Firewire port, and the H8000FW’s Firewire port, which is located directly to the right of the AC power cord port.
Turn on the Eventide H8000FW. (Windows XP will generate a two-tone audio signal when it recognizes a Firewire connection. Similarly, when a connection is disabled or broken, it will sound a reverse two-tone signal).
Windows will automatically detect that a new hardware device is connected., and display the first New Hardware Wizard screen:
162
Click the No, not this time radio button, followed by the Next button.
The second Wizard screen now displays:
Make sure Install the software automatically is selected, then click Next.
The following screen may annoyingly display again. If it does, select Continue
Anyway.
163
The installation now proceeds ……
When the driver is successfully installed, the following screen displays:
Now click Finish. All done. Time for a nice cup of tea.
Note: If for any reason the drivers did not install properly, unplug your Firewire cable from your PC, wait several seconds, and insert it again. You will be prompted by the New Hardware Wizard to insert your drivers CD as outlined above. Go through the process again until you receive the Windows confirmation message that all drivers were successfully installed. If this fails, go to the Troubleshooting section on page 173.
164
C o n f i g u r i n g t h e H 8 0 0 0 F W f o r P C O u t p u t
Once all software drivers have been installed, perform the following steps to enable PC output through the H8000FW.
Go to Windows’ Control Panel, and double-click Sound and Audio Devices
(below):
The following tabbed screen now displays:
165
Select the Audio tab, then, for Default Device, select Eventide Dice Audio.
Warning: If this option does not display in the Default Device’s drop-down list, the software drivers were not properly installed. Please reinstall the drivers, as described in the previous chapter.
Click Apply. This action establishes the H8000FW as the primary output device and overrides your installed sound card. (In this example, it overrides C-Media Wave Device; on your machine, it will be whatever sound card is installed on your PC.)
Configuring the H8000FW for Throughput
Follow these steps to enable throughput between your PC or Macintosh and the H8000FW:
From the H8000FW’s front panel, press the Processor A/B control button until A: displays in the upper left corner of the front panel’s screen.
Next, press Program.
Now, from the H8000FW’s keypad, enter 12, then ENT.
Finally, press the Select control button.
These actions enable throughput on DSP channel A of the H8000FW.
166
To enable throughput on DSP channel B, repeat the steps outlined above, except when selecting the channel using the Processor A/B control button, select B: instead of A:. Otherwise, all other procedures are identical.
You must also configure throughput from the H8000FW’s Routing screen.
To access the Routing screen,
Press the Program control button until it flashes; the Routing screen now displays.
From the H8000FW’s keypad, enter 14, then ENT.
Finally, press the Select control button.
The HW8000FW is now configured to playback audio from your PC.
To test if your connection works, go ahead and play an audio file from your PC. (For instance, go to My Music > Sample Music, and play either of the short audio clips there.) After you have selected an audio clip, the LED indicators on the left side of the H8000FW’s front panel will light, indicating it’s receiving the signal. Of course, if speakers are connected to the H8000FW you’ll hear the output, too.
167
T h e W i n d o w s C o n t r o l P a n e l
The H8000FW has a computer Control Panel that is installed by the driver which allows remote control of sample sources and some fine tuning. This may be launched from some applications or from the Eventide Inc section of All Programs under the Start button at the bottom left of your screen, or from a shortcut on your desktop. It’s called Eventide Dice.
The Control Panel has two areas – Global Settings and Device Settings. The Global Settings area has a number of pages which can be selected by the buttons at the left. These are Bus, WDM, DPC, System and Info. These will be discussed below.
If you have multiple H8000FW units connected to your computer, the Global Settings apply to all of them. The Device Settings apply to the selected unit (see below), with the exception that Sample Rate and Sync Source settings only apply to the Master unit (see below).
Device Settings
Device Description
This will always be Eventide H8000FW.
168
Device nickname
This allows you to enter an amusing nickname for your H8000FW. These names will only be meaningful if you have more than one H8000FW connected.
It is allowable (but not greatly sensible) to give multiple units the same nickname. You can tell
which is which by looking at SETUPclock – the Master unit (see below) will have the displayed Sample Rate (see below), while the non-Master (slave) unit(s) will be set to FIREWIRE1.
You can select the unit whose device settings are to be displayed by clicking on the large buttons under Devices. The clock symbol shows which one is the master.
Measured Sampling Rate
This shows the measured sample rate of the selected machine. The Master unit should match the Global Settings value (see below). Any slave (non-Master) units may display a slightly different value – this is OK.
Status
This shows the FireWire received Lock status of the selected machine. It should always be normal – if not, find and fix the problem before continuing.
Global Settings - Bus Page
Master
If you only have one H8000FW connected, this will always be the Master. Note that in this context, Master only refers to the computer-H8000FW FireWire link – the H8000FW may itself be synchronized to another source.
If you have more than one H8000FW connected, one of them will be selected as the Master and the others will be automatically slaved to it.
Sample Rate
The sample rate of the Master H8000FW may be set from here. If you change this, be sure that it matches your application or DAW project. In particular, WDM applications react badly to external sample rate setting changes.
If the lock indication to the right of this value does not say “System clock is Locked”, there is a problem that must be resolved before continuing.
Sync Source
This allows you to change the sync source of the Master H8000FW remotely. If you select anything other than Internal, it is wise to first be sure that the chosen source is solid. The AES11/12 setting should also be used when DIN11/12 is set to SPDIF3/4 on the inputs screen.
169