RE: dCS who re-build common DAC structures in programmable logic?

Digital Drive

Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it.

There may be specific patents on the Ring DAC, but the basic technology has been around for some time and goes by the name "Dynamic Element Mapping". You will find this in chips such as the ESS SABRE chip, and ESS holds some patents on their specific dynamic element mapping method.

The basic idea behind dynamic element mapping is to spread the conversion process around randomly. This has no effect if all the individual DAC switching elements are identical, but if they have slight differences then these will show up as noise, rather than signal dependent distortion without the dynamic element mapping. Since noise that is uncorrelated with the music is much less obtrusive than distortion this is a net gain.

Tony Lauck

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

http://db2.audioasylum.com/mhtml/m.html?forum=prophead&n=569 (Open in New Window)

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Follow Ups Full Thread

Topic - DSD DAC with no DAC Chip: What are my choices? - Sprezza Tura 13:32:16 08/8/14 (10)

RE: DSD DAC with no DAC Chip: What are my choices? - fmak 12:45:02 08/12/14 (0)

Mola Mola? - milpai 14:54:46 08/11/14 (0)

RE: DSD DAC with no DAC Chip: What are my choices? - Thorsten 22:40:44 08/9/14 (7)

RE: DSD DAC with no DAC Chip: What are my choices? - bonzo 14:27:51 09/14/14 (0)

RE: DSD DAC with no DAC Chip: What are my choices? - Sprezza Tura 08:00:22 08/11/14 (2)

RE: DSD DAC with no DAC Chip: What are my choices? - Mercman 13:54:54 08/11/14 (1)

RE: DSD DAC with no DAC Chip: What are my choices? - Sprezza Tura 14:41:03 08/11/14 (0)

dCS who re-build common DAC structures in programmable logic? - PAR 15:49:31 08/10/14 (2)

RE: dCS who re-build common DAC structures in programmable logic? - Tony Lauck 08/11/1412:46:29 08/11/14 (1)

A true 1-bit system (DSD) does not require dynamic matching because there are only two amplitude values (nt) - 13th Duke of Wymbourne 13:12:52 08/12/14 (0)

Follow Ups

RE: dCS who re-build common DAC structures in programmable logic? - Tony Lauck 08/11/1412:46:29 08/11/14 (1)

A true 1-bit system (DSD) does not require dynamic matching because there are only two amplitude values (nt) - 13th Duke of Wymbourne 13:12:52 08/12/14 (0)

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