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Not so hip to be square

There seems to be a fair bit of confusion about trying to reproduce square waves using bandwidth-limited systems (and face it, all audio systems are bandwidth-limited), so I decided to try to write up some basic things that hopefully will help clear some of the confusion.   As we know, a square wave is the sum of all odd harmonics, according to the formula   <p><a href="/monthly_2013_06/dc1ca9de7f258a89d3c579f55d29ed05.png.93746a73f3387dae706cd0249e50e77a.png" class="ipsAttachLink

Julf

Julf

 

The Double-Blind Control Experiment and Scientific Thinking

Edge.org, the website of the science and technology think thank Edge Foundation, has a great collection of answers from various experts to their "Edge Question 2011", "What Scientific Concept Would Improve Everybody's Cognitive Toolkit?" Among them is this great contribution from Richard Dawkins that I think applies extremely well to the audiophile world:   The Double-Blind Control Experiment Not all concepts wielded by professional scientists would improve everybody's cognitive toolk

Julf

Julf

 

Listening test results

Here are the results of the listening test. Unfortunately I only got 6 submissions before I decided to stop collecting entries, so it is not really a statistically relevant sample, and I would not draw any profound conclusions from the results.   As has been pointed out, anyone handy with a program such as Audacity could have cheated by looking at the spectrum plots, and just looking at file sizes would already have provided a lot of guidance. Fortunately the results seem to indicate that the

Julf

Julf

 

Listening test - bits and kiloherz

As some posters have doubted the benefit of resolutions and sample rates higher than 16 bit and 44.1 kHz, I set up a listening test.   Robert von Bahr of BIS has very kindly arranged for the permission to use a track from BIS-SACD-1949, "endBeginning" by New York Polyphony (available from eClassical).   I made available 8 versions of the track "Lamentationes Jeremiae - IV. Mem.". In addition to the original 24/96 track, there are versions that have been first downsampled and/or truncated to

Julf

Julf

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