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In Reply to: just to confuse things more about dsd vs. pcm (and upsampling) posted by andyshedd on March 30, 2006 at 16:58:14:
You get rid of the very steep brick wall filter at 22.1kHz which causes massive phase distortion. Same with 24/192. With DSD, distortion at hf is masked by upsampling noise and playback without a steep hf filter relies on a hf noise tolerant chain. With high sample rate pcm, the hf distortion products are not.
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Follow Ups
- Re: just to confuse things more about dsd vs. pcm (and upsampling) - fmak 20:42:21 03/30/06 (13)
- If the base rate is 44.1K, you probably still have the steep filter - Slider 06:29:44 03/31/06 (12)
- Re: If the base rate is 44.1K, you probably still have the steep filter - graemme 15:38:38 03/31/06 (11)
- Sounds too good to be true - Slider 16:26:31 03/31/06 (0)
- Re: If the base rate is 44.1K, you probably still have the steep filter - Christine Tham 15:52:13 03/31/06 (9)
- "And the filters in modern day DACs are pretty good" - Slider 16:42:07 03/31/06 (8)
- Re: "And the filters in modern day DACs are pretty good" - Christine Tham 17:12:24 03/31/06 (7)
- You know that Gordon doesn't use a filter, right? - Slider 17:43:17 03/31/06 (6)
- Every thing is a trade off, nothing is perfect - Christine Tham 18:27:04 03/31/06 (5)
- Re: Every thing is a trade off, nothing is perfect - Slider 07:47:34 04/01/06 (4)
- Re: Every thing is a trade off, nothing is perfect - Christine Tham 15:34:10 04/01/06 (3)
- low feedback opamp-based filters? - Slider 16:18:50 04/01/06 (2)
- Re: low feedback opamp-based filters? - Christine Tham 16:31:31 04/01/06 (1)
- Huh? - Charles Hansen 17:02:01 04/01/06 (0)
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