Asus Xonar D2X User Manual

Also see for Audio Card Xonar D2X: Quick installation guide Quick installation guide User manual

Contents

80 ASUS Xonar D2Xthe playback speed (2X, only on Windows XP) and record the accelerated analogsignal. PMP will convert the signal back to the normal speed with very high-quality(118dB SNR), low distortion (-108dB) time-scaling algorithm. ALT technology canshorten the total conversion process. Please refer to the graph below:Playback RecordOriginalDigitalDataConvertedDigital Data2X AnalogOutputSignalQ8: What's the application of "S/PDIF in loopback"?Answer:"SPDIF in loopback" is the process of looping back the sound card's S/PDIF digitalinput signal directly to the S/PDIF output. It's useful mainly for two purposes:• transforming electrical signals from coaxial cable to a fiber optical cable, or viceversa.• using the PC as a SPDIF bridge (typically as a media center): for example,connect other devices like DVD players to the Xonar D2X’s S/PDIF input andthen connect its SPDIF output to an AV receiver or decoder. When you wouldlike to send the player device's audio to the AV receiver, you need to have theXonar sound card's "S/PDIF in loopback" enabled to redirect the player's inputsignal to output to the AV receiver.Since "SPDIF In Loopback" is the hardware’s high-fidelity pass-through path, notall sound effects will be applied to the signals.Q9: Will PCM sound output through S/PDIF be just 2 channels even withdifferent analog output channels?Answer:The S/PDIF protocol specification (IEC-60958) can only carry 2-channel PCMdata or non-PCM AC3/DTS data. So, when a user selects PCM output for S/PDIF,the Xonar sound card will always deliver 2 channel PCM data through the S/PDIFoutput port. For attaining 5.1 channel surround sounds, you can select DolbyDigital Live or DTS Interactive encoding output from the S/PDIF out menu, whichwill allow the Xonar D2X to deliver 5.1 surround sound for games, DVD movies,and even stereo music.

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