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AudioAcoustics

Serving the Acoustics Community Since 1994

Cross-Spectrum Acoustics Inc. offers Sound & Vibration Consulting Services

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Jul 29, 2005

Remember HD Radio? The digital radio technology that has Wired, the NY Times, and even Microsofties buzzing?

Well apparently Microsoft wants to halt the proposed recommendations for HD-Radio. The source article is paid-subscription only, so I don’t know what the reasoning is. With any luck, they’re at least asking for a higher max-bitrate.

Scoble, what’s going on?


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NoiseOff has published the long-out-of-print The Tyranny Of Noise by Robert Alex Baron, a book that was written before I was born. Given its age, its amazing how many of Baron’s ideas were ahead of their time - mufflers for jackhammers for example.

However, since this book was published before the EPA Level’s Document was released, some of the material is out of date. Baron specifically cites the example of aircraft noise. Today, U.S aircraft makers has made great strides in reducing noise, by adjusting takeoff and landing procedures, and by reducing aircraft engine noise to the point where radiated sound from the aircraft body is now a significant source of noise. Labs have been setup around the country to study things like tire/pavement noise, and of course we now have professional engineering societies dedicated to the study of noise abatement.

But for a book written nearly 40 years ago, a lot of the ideas are still relevant today.


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Jul 26, 2005

The story of the Death Star Subwoofer for sale on eBay made the rounds last week. It has since been sold.

The builder also put up a site that describes the construction of the sub.

It’s a neat product, although I’d like to see it with an NHT 1259 or Adire Audio Shiva sub driver rather than the Alpine 12-inch.


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Jul 11, 2005

Residential Sound Proofing: ‘Pumping up’ the volume may be top of the list in planning a home media room, but ask any sound consultant, and you will soon discover that how quiet the room should be is just as important.

The article is, in part, an ad for Acoustiblok products, but it’s a good read if you’re interested in improving a room’s sound-insulating qualities.

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Something we (sadly) don’t see everyday: speakers designed and built by a woman


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Not a good idea: building residential subdivision (800 homes, plus an elementary school and cafes) right next to one of the busiest railroad lines in the country.

I don’t think I need to say anything more.


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The Oasis Home Theater Blog reports that Monster is setting up a program that helps installers deal with the challenges of managing and optimize cable runs in high-end home theaters. This is a good thing (but I still think they’re evil).


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Everything you needed to know about widescreen TV/DVD aspect ratios, complete with examples.

And I even like their selection of movies (I have a soft spot in my heart for The Black Hole - I don’t know why, it was a bad movie, and yet I enjoyed it).


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A few months ago, I announced that I was selling Bruel & Kjaer 1/2in Mic. adapters for GenRad 1986/1987 acoustic calibrators. Well, I just sold my last one. Sorry.

If you’re looking to make a bulk purchase, drop me a line and I might manufacture some more. Otherwise, I don’t anticipate producing any more.


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