hifimaker said:
About the Naim cds3, the informations published on the Stereophile in the review of the cd555 also should apply.
http://www.stereophile.com/cdplayers/207naim/
I know the owner of the cds3 and i could ask him to check on the manual. What exactly should I look for?
About the pdm200 specs, I checked your datasheet and it says:
44.1/48/88.2/96/176.4/192 kHz Input Sample Rate Capable
Are you sure about it being limited to 24/96?
I got a PMD200 spec sheet wit AO version. it should the final version as the Chip selling in China.
The diffeeence between the prelim and AO is the Hardware mode deleted.
If anybody is interested, give the e-mail address and I can send you one copy.
I believe PMD200 is not limt in 24/96. I think it is because it need to fit PCM1704 24bit 94khz sample frequency.
tamshuon@netvigator.com
The diffeeence between the prelim and AO is the Hardware mode deleted.
If anybody is interested, give the e-mail address and I can send you one copy.
I believe PMD200 is not limt in 24/96. I think it is because it need to fit PCM1704 24bit 94khz sample frequency.
tamshuon@netvigator.com
I spent a little more time looking into the PMD200. The company only shipped samples of the PMD200 prior to being acquired by Microsoft. Several manufacturers did ship PMD200 products, but they were largely based on Analog Devices DSP, where AD licensed the source code from MS. Again this information is dated back to the time of the merger. I believe the AD DSP part was marketed as the "Melody".
It appears more recently that MS has licensed the PMD source code to additional companies and the licensing fees are approximately $10-$20K upfront and $.10 to $.30 cents per product royalty. The actual fee depends on volume commitment.
All modern implementations of HDCD are embedded in a DSP, where HDCD is largely a minor feature of the product. For example the MediaTek DVD decoder chip used by Oppo and others also enables the suite of Dolby standards for home theater, up-sampling, down mixing, tone, and volume adjustments.
I would seriously doubt these are original PMD200 chips, since they were never manufactured in volume and samples were very restricted.
-David
It appears more recently that MS has licensed the PMD source code to additional companies and the licensing fees are approximately $10-$20K upfront and $.10 to $.30 cents per product royalty. The actual fee depends on volume commitment.
All modern implementations of HDCD are embedded in a DSP, where HDCD is largely a minor feature of the product. For example the MediaTek DVD decoder chip used by Oppo and others also enables the suite of Dolby standards for home theater, up-sampling, down mixing, tone, and volume adjustments.
I would seriously doubt these are original PMD200 chips, since they were never manufactured in volume and samples were very restricted.
-David
