🚀 go-pugleaf

jbuck@galileo.berkeley.edu (Joe Buck) writes:

>[deleted]

>Example of CD salespeak: pushing oversampling as an advanced technical
>feature.  Oversampling is simply inserting zeros between the digital
>samples and thus increasing the sampling rate.  It's used because then you
>can use cheaper, less complex analog filters; it reduces the system cost.
>Still, some sales critters think it's an advanced technical extra.

This kills me too.  Especially 8x oversampling !
(I always thought oversampling was used because analog filters usually
have a horrible phase response near the cutoff.  However, if you want
to spend enough money, you can get very near linear phase response
with an analog filter.  So, you are right).

When I bought my CD player, it said on the front panel 'Dual D/A
converters'.  For fun, I asked the salesperson what that meant.
The reply was rather funny, and of course completely inaccurate.

What does this really mean ?  (I figured maybe two distinct D/A's rather
than 1 D/A and two sample and holds ??).

>--
>Joe Buck
>jbuck@galileo.berkeley.edu	 {uunet,ucbvax}!galileo.berkeley.edu!jbuck	
--
Wilf LeBlanc                                 Carleton University
Internet: wilf@sce.carleton.ca               Systems & Computer Eng.
    UUCP: ...!uunet!mitel!cunews!sce!wilf    Ottawa, Ont, Canada, K1S 5B6