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Audio and Video Talk
General Discussion
Is it time for a locally-built CD Transport?
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<blockquote data-quote="gbyleveldt" data-source="post: 20328" data-attributes="member: 122"><p>I only mentioned the AD DSPs as an option. It is possible to use an FPGA as well, depending on the type of filtering / upsampling I want to do. Using IIR filters are less cycle intensive as opposed to FIR filters. The beauty with FIR filters are that they are linear phase, so you can do very steep filters without affecting the phase response (as in analogue and IIR filters). But, this comes at a price.</p><p></p><p>I still have a lot of research to do before I can give any valid comments on the best way forward. The first hurdle is getting a decent laser and mech assembly. I'm thinking of the venerable Sony KSS213 or the Sanyo SF-P101. Oh, but the way, the VRDS systems use Sony lasers as well <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>Then, I need to get some samples of the NXM or Toshiba servo controllers. Then, I need to get it to work. Then, and only then, will I sit down, have a smoke, go to bed and do the DSP in the morning, hehehehehe!!!! ;D Seriously, this'll be a lot of work! I need to investigate if this would be a marketable enterprise before I can commit any serious time to it. As you may now, this'll be a seriously niche product...</p></blockquote><p></p>
[QUOTE="gbyleveldt, post: 20328, member: 122"] I only mentioned the AD DSPs as an option. It is possible to use an FPGA as well, depending on the type of filtering / upsampling I want to do. Using IIR filters are less cycle intensive as opposed to FIR filters. The beauty with FIR filters are that they are linear phase, so you can do very steep filters without affecting the phase response (as in analogue and IIR filters). But, this comes at a price. I still have a lot of research to do before I can give any valid comments on the best way forward. The first hurdle is getting a decent laser and mech assembly. I'm thinking of the venerable Sony KSS213 or the Sanyo SF-P101. Oh, but the way, the VRDS systems use Sony lasers as well ;) Then, I need to get some samples of the NXM or Toshiba servo controllers. Then, I need to get it to work. Then, and only then, will I sit down, have a smoke, go to bed and do the DSP in the morning, hehehehehe!!!! ;D Seriously, this'll be a lot of work! I need to investigate if this would be a marketable enterprise before I can commit any serious time to it. As you may now, this'll be a seriously niche product... [/QUOTE]
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Audio and Video Talk
General Discussion
Is it time for a locally-built CD Transport?
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