12.2 DVD-Playback (AC-3/DTS)

AC-3 / DTS

When using popular DVD software players like WinDVD and PowerDVD, their audio data stream can be sent to any AC-3/DTS capable receiver using the Fireface's SPDIF output. For this to work, the WDM* SPDIF device of the Fireface 800 has to be selected in >Control Panel/ Sounds and Multimedia/ Audio<. Also check 'use preferred device only'. (*In some cases MME is not

supported)

The DVD software's audio properties now show the options 'SPDIF Out', 'Use SPDIF' or 'acti- vate SPDIF output'. When selecting these, the software will transfer the non-decoded digital multichannel data stream to the Fireface.

This 'SPDIF' signal sounds like chopped noise at highest level. Therefore the Fireface 800 automatically sets the non-audio bit within the digital data stream, to prevent most SPDIF re- ceivers from accepting the signal, and to prevent any attached equipment from being damaged.

Multichannel

PowerDVD and WinDVD can also operate as software decoder, sending a DVD's multichannel data stream directly to the analog outputs of the Fireface. All modes are supported, from 2 to 8 channels, at 16 bit resolution and up to 192 kHz sample rate. Up to 48 kHz, playback is also possible via the ADAT outputs of the Fireface.

For multichannel playback, a WDM streaming* device, or the correct** MME playback device of the Fireface 800 has to be selected in >Control Panel/ Sounds and Multimedia/ Audio<. Also check 'use preferred device only'. Additionally the loudspeaker setup, found under >Volume/ Speaker Settings/ Advanced< has to be changed from Stereo to 5.1 Surround.

PowerDVD's and WinDVD's audio properties now list several multichannel modes. If one of these is selected, the software sends the decoded analog multichannel data to the Fireface.

*The option Interleaved in the Settings dialog has to be activated.

**Certain MME playback devices of the Fireface support multichannel playback (Interleaved) with 2, 4, 6 and 8 chan- nels:

--Fireface Analog (1+2): Up to 192 kHz, playback on the analog outputs 1-8

--Fireface ADAT1 (1+2): Up to 48 kHz, playback on channels 13-20

--Fireface ADAT2 (1+2): Up to 48 kHz, playback on channels 21-28

Thanks to TotalMix, the software's playback channels can be routed to any hardware outputs. Therefore a playback at 96 kHz using the analog outputs can also be done via both ADAT ports. This also removes a limitation in some software (like PowerDVD 5), which always uses channel 1 as first channel of a multichannel playback.

The typical channel assignment for surround playback is:

1 - Left

2 - Right

3 - Center

4 - LFE (Low Frequency Effects)

5 - SL (Surround Left)

6 - SR (Surround Right)

Note 1: Selecting the Fireface to be used as system playback device is against our recommen- dations on system optimization, as professional cards are not specialized to play back system sounds, and shouldn't be disturbed by system events. To prevent this, be sure to re-assign the selection after usage, or to disable any system sounds (tab Sounds, scheme 'No audio').

Note 2: The DVD player will be synced backwards from the Fireface. This means when using AutoSync and/or word clock, the playback speed and pitch follows the incoming clock signal.

User's Guide Fireface 800 © RME

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Intel Fireface 800 manual DVD-Playback AC-3/DTS, AC-3 / DTS, Multichannel

Fireface 800 specifications

The Intel Fireface 800 is a powerful audio interface celebrated for its high-performance capabilities and versatility in both studio and live settings. Designed to cater to the needs of musicians, producers, and sound engineers, it stands out with its rich feature set and reliable technology.

One of the defining features of the Fireface 800 is its support for an impressive 26 input and 28 output channels. This extensive I/O configuration facilitates seamless integration with a wide variety of audio production setups, allowing users to record multiple instruments simultaneously or create complex routing scenarios. The unit also boasts top-notch analog and digital converters, ensuring pristine sound quality with a dynamic range that captures the nuances of any audio source.

In terms of connectivity, the Fireface 800 is equipped with both FireWire and USB ports, making it compatible with a range of computers and devices. The device utilizes the FireWire 800 protocol, which delivers higher data transfer rates compared to its predecessor. This efficient transfer capability is crucial for maintaining audio fidelity and reducing latency, making it an ideal choice for real-time monitoring and recording.

The Fireface 800 also features standalone operation capabilities, functioning independently of a computer when needed. This is particularly useful for live performances, where reliability and reduced setup complexity are essential. Users can easily connect microphones, instruments, and other equipment directly to the Fireface 800, making it a versatile tool for a variety of scenarios.

With its low-latency driver technology, the Fireface 800 ensures smooth performance even when handling demanding audio tasks. Its advanced ADAT and S/PDIF digital inputs and outputs provide further flexibility for connecting other gear, such as additional preamps and effects processors.

Another noteworthy characteristic of the Fireface 800 is its robust build quality. Designed for regular use in professional environments, the unit features a rugged metal chassis that can withstand the rigors of transport and daily use. This ensures longevity and consistent performance for audio professionals who depend on reliable equipment day in and day out.

In summary, the Intel Fireface 800 is a versatile and powerful audio interface that caters to a wide spectrum of audio production needs. With its extensive I/O capabilities, high-quality converters, reliable connectivity options, and robust design, it continues to be a popular choice among audio professionals striving for excellence in their work.