Electronic Design


British Eye Sees A Little Confusion
I find Electronic Design an excellent magazine, informative, useful, and enjoyable. That said, I found the article "Boost Performance By Vectorizing Your DSP Software" \[March 20, p. 115\] quite baffling. Where it purports to explain what vectorizing is in this context, it provided no meaningful explanation at all. I asked colleagues who have various levels of expertise in DSP if they understood it. None did. I presume that the article made sense if one understood what the author meant here by vectorizing. What was missing perhaps was a sidebar on this definition.

My second comment is that I find the use of "leverage" an unfortunate synonym for "use," "employ," or "exploit." I do not believe that it is used in this way outside of American English. To a British eye it looks pretentious—jargon for the sake of jargon—and I wonder whether it is really used (leveraged) that much in normal American speech.
Peter Robinson
C-Max Ltd., Dorset England

Further Contemplations On TAs....
About the Lenin quotation: I think he (and maybe Krushchev too, about the "burying us") may finally be right \["How To Improve Our Universities: Or The Tale Of Two Frauds, May 1, p. 154\]. Since my school days I've retreated to more honest endeavors, like pure math and music. From what I've seen of software that recognizes sheet music or sound (producing MIDI files), the best comes from former Eastern Bloc countries and is much less expensive.

By the way, that TA went into advising business leaders on applications of math to their problems.
Allan Myhara
Winnipeg, Manitoba, Canada

....But Author Still Believes It's Fraud
The TA wasn't at fault. He merely took what opportunity he could to earn some money and didn't realize he was an accessory in a fraud. It was the professor who was a crook. I also hope that you weren't permanently embittered.

I am not qualified to comment on contemporary music. However, I took an engineer's look at music notation and came up with a proposal for a six line staff which makes key signatures unnecessary and makes it unnecessary for performers (not composers) to learn about keys. Every line and space always has the same pitch. I am sure that you noticed how the entire music world has shifted over with shouts of joy.
Lawrence Kamm
Electromechanical Engineering Consultant

UHF TV Serving The Community
I always enjoy the 40 years ago articles. I saw your question at the end of the article "EIA Condemns FCC Plans to Pick TV Receiving Channels" \[May 1, p. 58\]. You asked if UHF provided an important source of TV programming for a large segment of the population.

I was born in 1964, so I was not aware of this UHF/VHF issue until I read the article, but I remember growing up with a TV antenna before cable TV was available. I live and grew up in York, Pa., and most of the local TV stations are UHF. We have an NBC station in Lancaster that is VHF, but the ABC and CBS stations out of Harrisburg are both UHF. The PBS station out of Hershey is UHF, and the local York station (presently Fox, but formerly independent) also is UHF. The only other TV stations we could get with an antenna (on a good day) were out of Baltimore, Md. and most of them are VHF.

I grew up in a rural area where cable wasn't available until about 1977. Having movies at home on the TV was a really big deal and so was being able to watch TV without "ghosts" or a "snowy" picture.
Bart Smith
Electronics Engineer
York International

In my area, the anthracite region of northeast Pennsylvania, there was a lot of pioneering work for UHF television broadcasters. Before I was born (I am about 40 now) the only available station was channel 12 out of Binghamton, NY, or some of the NYC VHF outlets if you were lucky enough to be at the proper side of the mountains or correct valley-side orientation. (And you had to have screaming antennas!) In fact my Dad, who is now deceased, used to be involved with a local store that did some TV work AND stuck many specially cut channel 12 antennas on the roofs! When the local stations hit the air here in the '50s they were all UHF—16, 22, and 28. Since then we have added 38, 44, and 64, all UHF. Why there was so much UHF work done here is a mystery to me. But I do know that at one time in the past, one of our UHF stations was known to be the most powerful TV station ERP-wise in the US!
Joeseph M. Taiariol
Electronics Engineering Technician
Gentex Corp.

You asked if any markets are served primarily by UHF stations. Ft. Wayne, Ind. has no VHF stations (ABC, NBC, CBS, and two independents—all UHF.) I have been told this is because we are within the interference distance of Chicago, Indianapolis, and Detroit.
Mike Mullen
Partner/Vice President, Engineering
TLA Systems

The Special Report "Wireless LANs Explode In A Kaleidoscope Of Options" that appeared in the May 29 issue incorrectly stated that Intersil Corp. had licensed ParkerVision's direct-conversion technology. It should have read that Symbol Technologies has licensed it. We apologize for any confusion this may have caused.

TAGS: Digital ICs
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