Originally Posted by kbil69
If we put 192KHz for all movies including for DVD in 48KHz, how behaves the sound ?
If the DVD contains an encoded sound format, which is usually the case with DD and DTS, then the PCM output setting is not relevant. The Xonar is able to pass through encoded audio formats (DD, DTS, DD+, DD TrueHD, DTS HD HR and DTS HD MA) via S/PDIF or HDMI to an external decoder.
However if your DVD holds plain LPCM, which is allowed by the DVD spec
but not often used, then the output setting in the Xonar HDAV Center is in effect. This is actually true for all PCM audio.
Furthermore, If one uses the analog output path of the Xonar deluxe version, then this setting is relevant even for encoded audio streams. This is because the encoded audio stream has to be decoded to PCM first. It does not matter whether this is done by the media player via a software decoder or by the Xonar's hardware decoder. Fact is that encoded formats are merely for transportation and can not be processed by audio hardware. In general digital audio hardware is working on/with PCM streams (afaik SACD is the only exception to this rule as it uses PDM instead of PCM). So, as the digital to analog converter of the Xonar is working on PCM streams one should be aware of the selected PCM settings in the HDAV Center for analog outputs, too.