| Title: | Welcome to the CD Notes Conference |
| Notice: | Welcome to COOKIE |
| Moderator: | COOKIE::ROLLOW |
| Created: | Mon Feb 17 1986 |
| Last Modified: | Fri Mar 03 1989 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1517 |
| Total number of notes: | 13349 |
I am just entering the market to purchase a cd player. Well last night while looking the salesman told me not to buy a certain deck because it was analog not digital. The digital deck (sony) was a $100.00 more. Was this salesman just trying to get me to buy a better deck or is there a big difference between analog or digital? Ken Holland
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 194.1 | --UnknownUser-- | Fri Oct 11 1985 09:05 | 0 | ||
| 194.2 | SPEEDY::LIONEL | Fri Oct 11 1985 09:05 | 7 | ||
Giving the salesperson some credit, he may have been referring to the filtering method used. Digital filtering is, in theory, better, but I think few people could tell the difference between two otherwise well-designed players. I would not pay $100 more just for digital filtering; features make more difference. The Sony players, though, are very good. Steve | |||||
| 194.3 | FURILO::JOHNSON | Fri Oct 11 1985 09:05 | 18 | ||
I would presume (assuming he was not a bozo) that we was referring to the
manner in which the player filters the output off the disc. Two methods
have been employed to filter the unwanted components from the final converted
output - multi-poled analog filters (after the DACs) or some sort of Digital
filter accompanied by a much less complicated analog filter at the end
of the signal path.
There have been many discussions concerning the pros and cons of each
method. Sony used to use multi-poled analog filters - now on their
third generation players they have begun using a digital scheme.
As far as what's better I personally believe the quality of the components
used is more important then the method. Digital filtering is cheaper
(if the analog filters are done right) and therefore it is a preferred
method. Given high quality components I believe you can get satisfactory
audio output from both methods.
peter
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| 194.4 | THORBY::MARRA | Fri Oct 11 1985 09:20 | 21 | ||
not in answer to the question but... I would heavily suggest learning as much about the CD theory as possible BEFORE talking to sales persons. They (the sales persons) will try to talk you into buying anything they can sell you. Anything. Pick up a couple of older audio/stereo review/high fidelity/digital audio/ rags at the local library and read the articles about it. You would need to go back about two years to get the theory, and then track the changes as the designs get better. One really nice thing to look at is the style that Audio uses to test the CD players. They use the same graphs for EACH cd player they review. The best two are the single pulse test, and the square wave test. Notice how the waves look as the technology gets better. The first 'square waves' were no better that 200$ cartridge square waves. while now (4x oversample dig/ana filter) they come extreemly close to square. The filtering can be seen in the pulse test. the first ones 'ring' for about a week, while the new ones ring very little. enjoy your shopping.. �dave� | |||||