RE: DSD Direct - Tony Lauck - Computer Audio Asylum

Computer Audio Asylum

Music servers and other computer based digital audio technologies.

RE: DSD Direct

In Reply to: RE: DSD Direct posted by ted_b on February 9, 2012 at 16:52:12:

There are some good DSD recordings out there, but then there are good recordings in every format. They might have been better if they had been made in 176/24 PCM.

The high frequency noise on DSD is a function of the DSD analog to digital converter and how it does noise shaping. One example is the graph linked from Roseval's post, where the noise starts well below 20 kHz and surpasses the noise from 24 bit PCM at a few kilohertz. An argument could even be made that the noise below 20 kHz is worse than with 44/16 digital. Given that there is noise below 20 kHz there is no way to filter this out without affecting the music. The situation gets worse at higher frequencies. Also, the noise is correlated to the musical signal and hence represents distortion rather than background noise. This is an unfortunate property of 1 bit noise shaping, a problem that does not exist with multi-bit PCM formats which can be properly dithered.

IMO Sony did the same thing with 1-bit technology that they did with Redbook: they chose a sample rate that was too low. Had they gone with DSD128 instead of DSD64 I wouldn't be making these comments.

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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Follow Ups Full Thread

Topic - DSD Direct - klaser 00:24:25 02/09/12 (14)

In the interest of learning... - Presto 09:44:21 02/09/12 (6)

RE: In the interest of learning... - klaser 00:20:04 02/10/12 (1)

does not exist as far as I know for a stand alone unit but - bwb 19:26:26 02/10/12 (0)

RE: In the interest of learning... - klaser 11:05:25 02/09/12 (3)

RE: "In the earliest days of CD's I hated the sound ... - JBen 14:46:52 02/09/12 (0)

RE: In the interest of learning... - Presto 11:23:47 02/09/12 (1)

RE: In the interest of learning... - klaser 23:38:33 02/09/12 (0)

RE: DSD Direct - phofman 03:09:11 02/09/12 (6)

RE: DSD Direct - Roseval 08:58:03 02/09/12 (5)

RE: DSD Direct - jriver 06:35:01 02/10/12 (0)

RE: DSD Direct - ted_b 16:52:12 02/09/12 (2)

RE: DSD Direct - Tony Lauck 07:40:34 02/10/12 (0)

RE: DSD Direct-There can - fmak 22:14:33 02/09/12 (0)

RE: DSD Direct - klaser 09:54:29 02/09/12 (0)

Follow Ups

RE: DSD Direct - Tony Lauck 07:40:34 02/10/12 (0)

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