I've tried to approach this scientifically....so this may get tedious. IN this post I'm going to lay out the test tracks and the conditions. In the next post or two, the results of combining different options of variables. A pity there's no way to post a table...
First, I took a short , apparently normal 6channel 48kHz .dts file (foobar shows the bitrate as 1510 kbps, AVR playback shows it as a plain, not 96/24 , DTS audio), ripped from the video layer of a DVD-audio disc. I used Audiomuxer to make a .dts.wav file from it. I loaded both of those into foobar2k, along with the stereo (2ch) .flac version of the same song, ripped from CD. So, three versions of the same track. (FWIW, the track is 'Five Percent For Nothing' from Yes' Fragile).
The constant and variable conditions are : Laptop --running Windows 7 Connected to: an AVR by S/PDIF optical, or no connection
internal soundcard (Realtek High Definition Audio, ALC3888) /default output: variable (options are Speakers or Digital) /Supported formats: DTS/DD/WMA /Sample Rates Supported: 44.1/48.0/96 kHz /Levels & Balance: 100 /Enhancements: all disabled /Dolby HT: off /Advanced soundcard options: //Default format: 2 channel 16 bit 44100 //Exclusive mode: ///exclusive control: YES ///Exclusive app priority: YES
Foobar v 0.9.6.9 Preferences: /Playback //volume control: full //replagain: none/none /Output //device: variable (options are Null, DS: Digital, DS: Speakers, WASAPI: Digital, WASAPI: Speakers) //Buffer: 870 ms //Format: 16 bit no dither, or 24 bit
/SPDIF //enabled for AC3, DTS, //variable: (options are WaveOut or DirectSound) //Allow 44 as 48 OFF
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