[LAD] Re: Direct Stream Digital / Pulse Density Modulation musing/questions
dominique.michel at citycable.ch
Wed Sep 26 16:58:44 UTC 2007
Le Tue, 25 Sep 2007 19:31:52 +0200,
Fons Adriaensen <fons at kokkinizita.net> a écrit :
> On Tue, Sep 25, 2007 at 10:50:48AM -0600, Bearcat M. Sandor wrote:
> > When i went down my local (ok, only) studio to have some LPs transferred to
> > CD the studio owner and i were talking about this very subject. He told me
> > that one day he bought a new mixer to replace his aging one. He set it
> > next to his old one and got it ready. The phone rang. He spent the next few
> > hours experimenting with it, and was happy with the differences it made in
> > the sound he was trying to achieve. However, he had forgotten to turn it
> > on.
> > I'm sure this isn't the only such story out there. If a person can fool
> > themselves into believing that such a piece of equipment is even
> > functioning, how much difference can it make? As a matter of fact, i think
> > he returned the mixer and stuck with his old one.
> A nice variation on this theme occured years ago at an AES conference.
> The speaker wanted to demonstrate that 'digital' sound was crap, by
> using the familiar 'push down the extended arm' test. Test persons
> listening to analog sound could easily resist, while they lost all
> force when listening to a digital recording.
> What the speaker didn't know was that the PA system used to play the
> tracks was fully digital...
> Years later the same person was promoting DSD against PCM, by the way...
It remain me some test that was done in Switzerland in the sixties (or
something like that) by the national TV. Test persons was listening to 2 sorts
of sounds: normal stereo, and mono with different tone settings on the left and
right channel. Of course, the conclusion was that it was not possible to
determinate for sure if a sound was stereo or mono. It is why we have in
Switzerland only monophonic sound on the TV. Some movies are transmitted with
bicanal sound: it is 2 time mono, one time in one language and one time with the
original language. You can choose the language. Most users are not even aware
of that possibility. lol...
Personally, I don't like it. I prefer very much a good stereo sound in the
original language (with some kind of text if it is a language that I don't
understand) like on the Swedish TV.
For that PCM-DSD stuff. I prefer PCM because we can archive a good sound
quality with a much lower bandwitch. DSD was fine at the beginning of digital
recording because it was nothing else (for what I know), but for today's
professional audio, DSD is a waste of resources because of the huge needed
More information about the Linux-audio-dev