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Robert Harley Posted: Jan 01, 1992 0 comments
Editor's Note: This article is now only available as an Audio Engineering Society preprint, under the title "The Role of Critical Listening in Evaluating Audio Equipment Quality," preprint number 3176. The price is $4.00 for AES members, and $5.00 for non-members; it can be ordered (currently on paper only, not as a downloadable pdf) by entering the number in the appropriate field on the preprint search page at the AES website.
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Robert Harley Posted: Jul 04, 2004 Published: Jan 01, 1992 0 comments
"How sour sweet music is
When time is broke and no proportion kept!"
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Peter W. Mitchell Robert Harley Posted: Dec 10, 2013 Published: Dec 01, 1991 13 comments
Editor's Introduction: In 2013, lossy compression is everywhere—without lossy codecs like MP3, Dolby Digital, DTS, A2DP, AAC, apt-X, and Ogg Vorbis, there would be no Web audio services like Spotify or Pandora, no multichannel soundtracks on DVD, no Bluetooth audio, no DAB and HDradio, no Sirius/XM, and no iTunes, to quote the commercial successes and no Napster, MiniDisc, or DCC, to quote the failures. Despite their potential for damage to the music, the convenience and sometimes drastic reduction in audio file size have made lossy codecs ubiquitous in the 21st century. Stereophile covered the development of lossy compression; following is an article from more than two decades ago warning of the sonic dangers.—Editor
Robert Harley Posted: Apr 17, 2015 Published: Nov 01, 1991 3 comments
"In the fields of observation, chance favors only the mind that is prepared."

When Louis Pasteur uttered these words more than a hundred years ago, he must have speculated that they would apply equally well to future circumstances as to the events of his day. What he couldn't anticipate, however, was the technology to which his insight now seems so appropriate.

Robert Harley Posted: May 06, 2015 Published: Nov 01, 1991 0 comments
In hindsight, it was inevitable that two sophisticated digital audio technologies—software-based digital filters and Bitstream D/A converters—were destined to be married in one product. The software-based D/A converters offered by Krell, Wadia, and Theta all used multi-bit ladder DACs, and Bitstream-based units have previously relied on off-the-shelf digital filters.
Robert Harley Posted: Oct 27, 1991 Published: Oct 28, 1991 0 comments
As I walked through Stereophile's Taipei High-End Hi-Fi show (see the full report next month), I was startled to see four ladies in their 50s carrying Stereophile bags full of brochures. They'd just left a demonstration of Martin-Logan CLSes driven by Aragon electronics and were talking animatedly among themselves as they busily made their way to the next exhibit room. My surprise was repeated throughout the show as I saw an amazingly diverse group of people who had enough interest in high-end audio to get themselves to the Taipei Hilton and pay the show's admission price. Young couples, old couples, entire families, and women were all there to see and hear high-end audio. This was in sharp contrast to the narrow demographic group seen at US and European hi-fi shows: predominantly young to middle-aged males to whom audio is a hobby.
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Robert Harley Posted: Sep 29, 1991 0 comments
"But I Thought You Were My Friend!" (Footnote 1)
Robert Harley Sam Tellig Posted: Jun 18, 2014 Published: Aug 01, 1991 0 comments
No, the $399 price listed in the specification block isn't a misprint. And yes, the Audio Alchemy Digital Decoding Engine v1.0 is indeed a full-function outboard digital processor. And since this is the August issue, not April, you can stop worrying that this review is some kind of joke.

The $399 Digital Decoding Engine is for real.

Robert Harley Posted: Jul 29, 1991 0 comments
A man who had just looked through his very first Stereophile---April's "Recommended Components" issue picked up at a newsstand---recently called to ask my advice on a certain inexpensive CD player made by a large mid-fi company. I told him I hadn't auditioned the player and thus couldn't comment on its worth. The man then proceeded to read me the player's specifications, finally informing me that the player "had the new 1-bit thing"---all in the belief that I could make a recommendation based on what he'd just told me. He apparently had been conditioned to believe that not only was "the 1-bit thing" superior, but that choosing a CD player was merely a matter of evaluating technical specs.
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Robert Harley Corey Greenberg Larry Greenhill Thomas J. Norton Posted: Nov 02, 2011 Published: Jul 01, 1991 0 comments
I should begin this review by confessing that I've never been a fan of subwoofers. Most subwoofer systems I've heard have been plagued by a familiar litany of sonic horrors: poor integration between subwoofer and main speakers, boom, bloat, tubbiness, slowness, excessive LF output, and an overall presentation that constantly reminds the listener he is hearing a big cone moving. To me, subwoofers often sound detached from the music, providing an accompanying thump that bears little relationship to the sound from the main speakers. Rather than revealing the music's harmonic underpinnings, subwoofers often obscure them in a thick morass of featureless boom. In addition, adding a subwoofer often destroys the qualities of the main speakers that made you buy them in the first place—just to name a few of my observations (footnote 1).

Other than that, I like subwoofers.

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