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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Re: one more.... posted by john curl on January 6, 2002 at 14:19:45:
Hi John,> Barrie takes a cheap shot at Dr. Otala, but oh well! I met
> Barrie Gilbert at a conference in 1974 and tried to explain
> to him some of Matti Otala's ideas. He thought I was crazy.
> Now, of course, he knew it all the time ;-)Well, that was before my time. Not only was I getting well filtered air behind the Iron Curtain, it must have been also the time when I did first DIY Audio Project, interfacing our "Stereo" turntable to the old big Valve radio in the corner, which was "Mono" but sounded real good.
> Still, this is a great article, BUT the diagrams are not reprinted.
I know. I think I have them somewhere.
> What is really outstanding in this article, is section (14)
> where phase modulation (jitter?) is created by internal amplitude
> modulation. This is really scary!Yup. And nowadays it is being in essence noted as fact (Mr. Self of cours demures as it does not affect single number THD Measurements). I have been aware of Dr. Ottals thesis on this and had the jucy bits in copy.
> By the way, Matti Otala wrote a paper on this phase modulation
> more than 20 years ago but the AES refused to publish it (I'm
> pretty sure) Still, it was given as an AES lecture and there
> is an AES preprint. This is much like Jon Risch, who has an
> excellent AES preprint, but it wasn't included in the Journal.Yes, it seems that the doors into the hallowed pages of the JAES are being strongly guarded by the protectrs of the AUdio Orthodoxie who will no doubt soon bring back the Spanish Inquisition back. One wonders how Crowhursts 1957 Article made it in there, or did the Editors and review panel have a somewhat more openminded approach back than?
Ciao T
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Follow Ups
- Re: one more.... - Thorsten 01/8/0212:06:25 01/8/02 (0)
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