![]() ![]() You can only try to enhance the quality with the receiver's adjustments. This is the very nature of "pass through". It is not possible to alter the quality on PC when an external decoder is used. With SPDIF pass through the perceived audio quality is depended on what your source material contains and how your receiver handles the signal. Otherwise you would hear only very unpleasant static noise. If the DTS sign on your receiver shows up and you can hear multichannel audio then the decoder works. It is supposed to deliver the apparently 2-channel PCM audio stream in fully unaltered form to the external decoder. I think this quoted part means that the ".wav DTS" pass through already works correctly. This may not be easy.Ī couple of years ago I wrapped some extracted 48 kHz DD audio tracks succesfully in the Matroska container file format for pass through playback, but I have not tried DTS. If the files are 48000 kHz and not in a wav container (possibly extracted from DVD video) then you may need to find suitable DirectShow filters and settings for bit perfect pass through. If the files are ripped from DTS CDs you should not use the. The only difference is that your external DTS receiver detects the signal and decodes it. If you can play 44.1 kHz PCM stereo bit perfectly through SPDIF then you can play 44.1 kHz DTS. The used software and drivers should not be "aware" of the special nature of this audio signal. If yes, then you should not use anything that you would not use for bit perfect PCM 2-channel stereo playback through SPDIF. ![]() Are your files ripped from 5.1 DTS Music Discs ? Quote from: Fonzo on May 09, 2007, 11:56:18 am Thanks for your quick reply. I fiddled around with the Channel Offset settings and changed it from 1 to 6, but this only results in a dialog box which indicates 'ASIO Start Return Value: -1 (should be 0) and 'Plugin Open Return Value: -1 (should be 0)' folowed by the same second dialog box mentioned above (2). But alas, there is no sound an no DTS indication on my receiver. dts file is playing and I can see the Spectrum Analyzer bargraph. Also, make sure that you system has a valid sound playback device and that it is properly configured in playback options."Īnd now it's getting rather interesting: when selecting the "ASIO4ALL v2" drivers instead of the "M-Audio ASIO Interface" in Outout Mode Settings, the two error messages above are gone. You can use DSP Studio to change the output to a compatible format. This output may not be supported by your hardware. (2) "Playback could not be started on the output 'ASIO using the format '32 bits Per Sample, 2 Channels'. (1) "The ASIO device 'M-audio USB ASIO Interface' does not support the sample rate of 44100Hz". wav files in combination with the M-Audio control-panel option "Dolby Digital/DTS pass-through 16-bit/48000Hz", MC12 pops up with the following dialog: 'System Volume' is selected in Player => Volume. I already assumed I have to somehow bypass the DirectShow filters. I assume the bitstream is handled by the M-Audio itself and send through SPDIF to my receiver, rather than passed-through and handled by the receiver itself which only works when playing DTS-DVDs. But there is no way I can use "pass-through" when playing. ![]() I setup ffdshow correctly (I guess) using glynor's Wiki DTSWAV article: DTS (and AC3) are set to SPDIF, DSP inside MC12 is disabled. I also found some related topics on this forum: and. I already tried ASIO4ALL as alternative driver in MC12, but nogo. Output though "pass-through" just sounds better. The output to the speakers is 5.1 and the receiver indicates DTS 3/2.1 output, BUT I noticed a quality difference between these two M-Audio control panel options mentioned above when playing DTS-DVD. img), the signal can only be played when selecting the "2-In/2-Out, 24-bit, 8000 – 48000 Hz" option in the M-Audio control panel. cue with.wav files) or loaded in a virtual drive (.ngc and. dts/.wav files, DTS-CD-images (on my hard disk as. The sound quality is absolutely stunning. When playing DTS-content from DVD in MC12 -such as Donald Fagen's Kamakiriad- the signal is passed-though correctly, using the "Dolby Digital/DTS pass-through 16-bit / 48000Hz" option in the M-Audio control panel and the ASIO playback setting in MC12 itself. ![]() I use ffdshow from the latest CCCP codec-pack. I connected a M-Audio Transit USB to my Sony DTS-receiver through optical SPDIF TOSlink. There is however a problem I cannot solve: I'm currently using the latest trial-version of MC12 and the software is just brilliant and on this extensive forum I already solved a lot of small playback issues and codec settings. ![]()
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