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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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Digital Drive Upsamplers, DACs, jitter, shakes and analogue withdrawals, this is it. |
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In Reply to: Re: Why would you choose to upsample to 96 instead of 88.2.... posted by Ted Smith on January 18, 2007 at 17:32:09:
"Well the ASRC chip it uses to upsample will have less error the closer to an integral ratio you get, i.e. 88.2 (= 2 x 44.1) is a lot better than 96 (= 320/147 x 44.1)."Although the DSD based converters run by this golden ratio, the far-more-common ASRC chips do not. According to Analog's ASRC data sheets, the chips first oversample at an extremely high rate, then the output clock triggers the output to grab samples off the intermediate oversampled stream.
If all ASRCs ran "320/147", I wouldn't be complaining about it. But as of now, I cannot recommend any player or DAC that uses ASRC.
I first heard of this golden ratio from the late Julian Dunn of Prism.
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Follow Ups
- Re: Why would you choose to upsample to 96 instead of 88.2.... - Todd Krieger 11:18:22 01/26/07 (1)
- Re: Why would you choose to upsample to 96 instead of 88.2.... - Ted Smith 12:52:16 01/26/07 (0)
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