PMD200 is the other (later) chip in use... The algorithms can also be licensed from Microsoft for use in certain programmable DSP chip families as well..
The PMD-100 is frequently available from China on eBay, watch out for counterfeits though.
Interestingly enough there are a lot of Chinese made CD players that support HDCD..
Certain of the old Rotel CD player models also supported HDCD and used the PMD-100 to do so..
For hobbyists the PMD-100 really is the only game in town, unfortunately it is not readily compatible with most recent dac ICs.. Should work fine with the Wolfson, BB or Crystal SPDIF receivers and obsolete older 20 bit dac ICs.
The PMD-100 is frequently available from China on eBay, watch out for counterfeits though.
Interestingly enough there are a lot of Chinese made CD players that support HDCD..
Certain of the old Rotel CD player models also supported HDCD and used the PMD-100 to do so..
For hobbyists the PMD-100 really is the only game in town, unfortunately it is not readily compatible with most recent dac ICs.. Should work fine with the Wolfson, BB or Crystal SPDIF receivers and obsolete older 20 bit dac ICs.
Separate line for left and right channel indeed. But anything like that with 16 to 24 bit can be connected. Even a TDA1541 if you put some effort in it
Separate line for left and right channel indeed. But anything like that with 16 to 24 bit can be connected. Even a TDA1541 if you put some effort in it
I'd recommend at least a 20 bit dac chip to get the full benefits of HDCD quality reproduction..
Yeah, if you ever find such a cd. Don't think i have one, can't remember ever seeing one.
As for unobtainable, i got two some years ago for not too much money. But i've heard things changed with prices. And when they go up, it gets interesting to fake them (as with anything). But a (broken) player with one should be obtainable i guess, if you really want one.
Pitty i never found a 200.
As for unobtainable, i got two some years ago for not too much money. But i've heard things changed with prices. And when they go up, it gets interesting to fake them (as with anything). But a (broken) player with one should be obtainable i guess, if you really want one.
Pitty i never found a 200.
The 200 requires an mpu with a lot of complex code to configure it for decoding.. The PMD-100 works quite happily as a hardware mode device..
I have dozens of HDCDs in my collection, and oddly enough a good percentage of them are not even marked. I suspect they are a lot more common than you might suspect, and just about all of the audiophile oriented online sellers have extensive HDCD product available for purchase. I used to have a PS Audio Ultralink II which happily decoded HDCDs and lit a light when doing so.. Unfortunately its performance on standard 16 bit material did not match my diy dac so ultimately I got rid of it.
foobar2000: Components Repository - HDCD Decoder
the disscussion link gets to a hydrogen audio thread
somewhere there are claims that many CDs mastered on the Microsonics gear light up the HDCD logo but may not have used any of the HDCD processing - these may not be marked on the cover as HDCD
the disscussion link gets to a hydrogen audio thread
somewhere there are claims that many CDs mastered on the Microsonics gear light up the HDCD logo but may not have used any of the HDCD processing - these may not be marked on the cover as HDCD
I know. It's just not that complicated for me (the coding in general, don't know the 200's specifics).
Controlling the 100 with a mpu requires ports (or i/o expander) and specific code to control the adapting. With the 200 it's only hooking it up to the i2c bus.
Foobar with the HDCD decoder lets you see in real time the HDCD flags used and coupled with the "Peak Meter" can show you if the recording passes the 0 dB (of the 16 bit).
Now, even if the "peak extend" or "transient filter" are not used, the advanced filtering in the Microsonics equipment used at recording time produced better sounding CD's.
For example is "Roxy Music - Avalon" does not use the two above flags and peaks are at -6dB.
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