Historical

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Is Analog Dead?

1950: "The ultimate in disc recording is to make the reproduced sound as near as possible to the original..." (The founder of Audio magazine, C.G. McProud, in "Recording Characteristics," Audio Engineering, January 1950, reprinted in The 2nd Audio Anthology, p.67, Radio Magazines, 1954.)


Readers Review Stereophile's Poem LP

In the Fall of 1989, Stereophile magazine released its first recording, of Gary Woodward and Brooks Smith playing flute sonatas by Prokofiev and Reinecke, and a work by American composer Griffes that gave the LP its title: Poem (footnote 1). The full">http://www.stereophile.com//interviews/527/">full story was published in the September 1989 issue (p.66). We wanted to offer our readers an LP of acoustic music made with the minimum of electronics and processing—the sounds of the instruments would be as true to reality as possible. The images of the instruments were also captured with a purist microphone technique so that, with even a halfway decent system, a true soundstage would be created between and behind the loudspeakers when the recording was played back.


A Matter of Measurements

Beginning with this issue, Stereophile readers will notice that more of the subjective equipment reviews are augmented with technical reports describing certain aspects of the component's measured performance. Although test data have lately been increasingly included in reviews, Stereophile has recently made a major commitment to providing readers with relevant measurements of products under review. We have just finished building an audio test laboratory featuring the Audio Precision System One, a sophisticated, computer-based audio test measurement system.


Must We Test? Yes, We Must!

"Test We Must," cried High Fidelity's erstwhile editor, Michael Riggs, in a January 1989 leader article condemning the growth of subjective testing. (See the sidebar for Peter Mitchell's obituary of HF magazine, now effectively merged with Stereo Review.) With the exception of loudspeakers, where it is still necessary to listen, he wrote, "laboratory testing (properly done) can tell us pretty much everything we need to know about the performance of a typical piece of electronics...We know what the important characteristics are, how to measure them, and how to interpret the results."


A Matter of Dimensions

I have been reading a lot of late. Whether it is due to the reduced appeal of recorded music owing to the ever-decreasing shelves of LPs in our local specialty record store (the owner explains that he still wants to sell LPs; it's the record companies that make it increasingly harder for him to do so with punitive returns policies and deaf ears to back orders), or the fact that it's Spring, I don't know. But the fact remains that I have recently found myself devouring a shelf-full of titles sometimes only vaguely related—horrors!—to high fidelity. Stuart Chase's The Tyranny of Words, for example, first published in 1938 and a finer examination of what came to be called semantics you wouldn't want to find, should be essential reading for anyone involved in writing articles that are still intended to communicate some meaning.

PDM, PWM, Delta-Sigma, 1-Bit DACs

Editor's Note: One-bit DAC chips in the 21st century, where the analog output signal is reconstructed from a very high-rate stream of pulses, are ubiquitous. But a quarter-century ago, those chips were only just beginning to stream from the chip foundries. In this feature, we aggregate Stereophile's 1989 coverage of the then-new technology, starting with Peter van Willenswaard on the basics.—John Atkinson.


1989 may well become the year of the D/A converter (DAC). CD-player manufacturers have, almost without exception, launched research projects focusing on this problem area of digital audio; many of these projects are already a year old. This is, however, by no means the only imperfection keeping us away from the high-quality sound we have come to suspect is possible with digital audio media, and maybe not even the most important.

A Trojan Horse in Washington

"Tax proposed to fund Public TV, radio," read the newspaper headline. The Working Group for Public Broadcasting, described as a "private study group," was proposing to free public broadcasting "from improper political and commercial influences" by replacing its $228 million in congressional appropriations and $70 million or so in corporate funding with $600 million to be raised from a new sales tax on electronic equipment. The article went on to say that the proposal was being sent to the congressional panels concerned with communications (ie, the commerce committees), where it could become the basis for a new Public Broadcasting Act.


The Reviewer's Lot

"Time to write another equipment report," thought the Great Reviewer, aware that the IRS would soon require another small donation to keep the country running on track. Deftly donning his Tom Wolfe vanilla suit, he sat at the antique desk acquired on one of his many all-expenses-paid research trips to Europe, patted the bust of H.L. Mencken that invariably stood by the word processor, ensured that his level of gonzo awareness was up to par, arranged his prejudices and biases in descending order of importance, checked that the requisite check was in the mail, coined a sufficient number of Maileresque factoids appropriate to the occasion, and dashed off 3000 words of pungently witty, passionately argued, convincingly objective, and deeply felt prose.


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