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Thanks.... I'll check-out your references..... I just buy the cheap CDRs, usually at ten-cents a platter.... I only use the CDRs for backups of my hard drives and for albums for teenagers..... I make several copies, so if a CD goes bad after a few years, I have a replacement.....It is my understanding that, on occassion, a cheap CDR may go bad after some years, while others have noted that, on the cheap CDRs, the dye may be thin at the outer edge of the disk (hence, some skipping there)..... But I have yet to experience any such problems with my Sanyo burner.
The difference in sound quality of black, blue, red, orange, or green (or whatever color) CDRs versus the cheap silver CDRs is probably more a fictitious than a factual argument......Most have forgotten that when CDs first came out, there was great criticism that they sounded quite harsh to those with Golden Ears......The Golden Ears were correct because of two considerations.....1) CDs use a brick-wall filter at 20-22KHz --- which G. Slot found to be a "no-no" if one wanted to preserve high quality music..... See his tests on partially-deaf subjects in the below referenced book and his recommendation that one should never use filter roll-offs greater tha 6 dB per Octave.....2) CDs are based on the Nyquest sampling theorem that a little over two samples per cycle is enough to establish the cycle's frequency and amplitude......This is true --- but only for infinite sampling of a stationary random signal --- which obviously is not appropriate for music, as music is neither stationary nor random nor of infinite duration.......In Engineering, one samples at five (minimum) or ten (preferred) samples per cycle to accurately establish a signal's frequency and amplitude......For example, to accuately establish the dominating frequencies (and their amplitudes) in a aircraft jet exhaust in the frequency range 16KHz to 20KHz, most engineers would sample at 100,000 to 200,000 samples per second --- and thus totally discarding that sampling crteria used in CDs
Reference book:
Audio Quality: Requirements For High Quality Audio Equipment
Author: G. Slot 1971
Published: 1972 by Drake Publishers, Inc., 381 Park Avenue, New York, New York
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