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<blockquote data-quote="vl002001" data-source="post: 604862" data-attributes="member: 83930">I'm new to the audio side of things, but right now I'm using ffdshow to passthough ac3 to my HK avr235 receiver.Sometimes, (for instance with Windows Media Center or certain x264 movies), the receiver says &quot;DOLBY DIGITAL&quot; and I won't be able to adjust any settings.&nbsp; I figure because the sound coming in is 5.1 and the receiver doesn't need to upconvert anything.However, other times, usually older xvid files with dd5.1 sound, it says DOLBY PRO LOGIC II, which i assume means the receiver is upconverting the signal to 5.1 sound.&nbsp; However, isn't the sound already 5.1?&nbsp; is it over processing the sound? I only ask because the surround sound sounds pretty crappy when it does this.&nbsp; However, when it gets a mp3 2.0 file, and then processes it using dolby pro logic ii, it actually sounds much better.Any ideas?&nbsp; I'm obviously very new to this, thanks.</blockquote>

[QUOTE="vl002001, post: 604862, member: 83930"] I'm new to the audio side of things, but right now I'm using ffdshow to passthough ac3 to my HK avr235 receiver. Sometimes, (for instance with Windows Media Center or certain x264 movies), the receiver says "DOLBY DIGITAL" and I won't be able to adjust any settings. I figure because the sound coming in is 5.1 and the receiver doesn't need to upconvert anything. However, other times, usually older xvid files with dd5.1 sound, it says DOLBY PRO LOGIC II, which i assume means the receiver is upconverting the signal to 5.1 sound. However, isn't the sound already 5.1? is it over processing the sound? I only ask because the surround sound sounds pretty crappy when it does this. However, when it gets a mp3 2.0 file, and then processes it using dolby pro logic ii, it actually sounds much better. Any ideas? I'm obviously very new to this, thanks. [/QUOTE]

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