6 - Appendix

Word Clock In/Out

Word Clock In/Out

Word clock provides a standardized means of synchronizing multiple digital audio devices so that data can be transferred digitally. In order to digitally transfer from one device to another, the two devices MUST be synchronized. Clicks and pops in the audio will result when transferring digital audio which is not synchronized.

The E-MU 0404 PCI card can be externally clocked from the S/PDIF input (either optical or electrical) or from the Sync Daughter card (if installed). In a digital studio, all digital devices in the system should run off the same master Word Clock.

To Synchronize PatchMix DSP to an External Clock Source:

1.Make sure an external clock source is connected to the E-MU Digital Audio System hardware via the word clock or S/PDIF input.

2.Open the Session Settings dialog box.

3.Under the System tab, select External Source, then select either Word Clock or S/PDIF.

4.Press OK to close the dialog box.

5.Check the Sync section of PatchMix DSP to verify that the Locked indicator is illuminated.

Devices can be connected in daisy chain fashion (word clock out connected to the next unit’s word clock in) or in parallel for one or two devices, but professional digital studios normally use a master word clock generator or “House Sync” with a distribution system so that each device receives a phase-coherent and jitter-free word clock.

fWord clock and S/PDIF synchronize at the sample rate and are used to transfer digital data between machines.

House Sync

Generator

Digital

Device 1

Digital

Device 2

Digital

Device 3

Digital

Device 4

A master word clock generator is preferable for larger digital setups.

Word Clock In: Receives word clock (sample clock) from another digital device such as a digital video deck, digital recorder or digital mixer.

Word Clock Out: Sends word clock (sample clock) to another digital recorder. Word clock is always output, whether it is generated by the internal clock or passed through from the word clock input.

75On/Off: Termination for the word clock input can be switched on or off in the Sync Card menu of the PatchMix DSP application. Normally word clock termination should be left on. If you have problems with a weak word clock signal, try turning termi- nation off. See Word Clock Termination.

The diagram below shows the proper way to connect and terminate a serial word clock chain. Using a BNC “T” connector ensures that word clock is precisely in phase for both devices. The middle device has termination turned Off and the last device in the word clock chain has termination turned On.

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Creative Professional

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Creative 0404 owner manual Word Clock In/Out, House Sync Generator Digital Device

0404 specifications

Creative 0404 is a premium audio interface designed for musicians, podcasters, and audiophiles seeking high-quality sound reproduction and versatile connectivity options. One of its standout features is its ability to support high-resolution audio up to 24-bit/192 kHz, ensuring that every detail is captured faithfully during recording and playback. This makes it an ideal choice for those who prioritize sound clarity and depth in their projects.

The device boasts a sleek, compact design that is both portable and user-friendly. It includes a sturdy chassis that can withstand the rigors of travel while maintaining a professional appearance in studio settings. The Creative 0404 features multiple input and output options, including combo XLR/TRS inputs with switchable phantom power, allowing users to connect a variety of microphones and instruments. This flexibility is essential for those working in diverse audio environments.

One of the key technologies employed in the Creative 0404 is its high-performance DAC (digital-to-analog converter), which plays a crucial role in delivering pristine sound quality. The DAC minimizes distortion and noise, ensuring the signal integrity is retained throughout the audio chain. Additionally, the device incorporates advanced audio processing capabilities, allowing for real-time monitoring and effects.

The interface is compatible with various operating systems, including Windows and macOS, and works seamlessly with popular digital audio workstations (DAWs). This compatibility ensures that users can easily integrate the Creative 0404 into their existing workflows. Another notable feature is its low-latency performance, which is essential for live recordings and performances, enabling musicians to monitor their inputs without distractions.

Moreover, the Creative 0404 comes with a suite of software tools that enhance its usability. This includes recording, editing, and mixing software, as well as various plug-ins that allow users to expand their creative possibilities. Its straightforward controls and intuitive layout make it accessible for both beginners and seasoned professionals.

In summary, the Creative 0404 is a feature-rich audio interface that combines high-performance audio quality, versatile connectivity, and ease of use. Whether for home studios, podcasts, or live performances, it offers the tools necessary to produce professional-sounding audio effortlessly. It represents a perfect blend of technology and practicality, catering to the needs of modern audio creators.