Home Theater Forum - View Single Post - Roogs Benoit's DD/DTS test (ORIGINALLY "Ever wish they would drop DTS to fit movies on one disc

DaViD Boulet · 09-11-2003, 11:43 AM

Roogs,

I'm with Michael...we just gotta know

If you're not pulling our leg

then that certainly would be the best apples-apples comparison possible if one wanted to compare compression-algorithm to compression-algorithm. I state that because it's very possible that *many* of the sound-quality issues listeners consistently hear between various "formats" like DTS or DD may have many factors that come into play in practice other than compression-algorithm.

Some questions do remain given what you describe: Were identical bit-rates used during compression? What was the resolution of the source PCM digital multitrack signal? Was that resolution preserved (I understand that DD can encode up to 20-bit words) or downconverted to the 16-bit level for either or both codecs? Were any additional processing steps employed or avoided? DD has a host of manipulation tools like dialog normalization and EQ etc. that often get used inadvertantly by mastering houses without much expertise.

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09-11-2003, 11:43 AM	#4 of 37
DaViD Boulet Member Join Date: Feb 1999 Local Time: 06:34 PM Local Date: 10-12-2008 Posts: 9,550	Roogs, I'm with Michael...we just gotta know If you're not pulling our leg then that certainly would be the best apples-apples comparison possible if one wanted to compare compression-algorithm to compression-algorithm. I state that because it's very possible that many of the sound-quality issues listeners consistently hear between various "formats" like DTS or DD may have many factors that come into play in practice other than compression-algorithm. Some questions do remain given what you describe: Were identical bit-rates used during compression? What was the resolution of the source PCM digital multitrack signal? Was that resolution preserved (I understand that DD can encode up to 20-bit words) or downconverted to the 16-bit level for either or both codecs? Were any additional processing steps employed or avoided? DD has a host of manipulation tools like dialog normalization and EQ etc. that often get used inadvertantly by mastering houses without much expertise. Private Messaging enabled? Be an Original Aspect Ratio Advocate Supporter of 1080p24 video and lossless 24 bit audio.