mcdonalk
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- Feb 15, 2020
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A little over 20 years ago, a colleague and I endeavored to test the effect of CD Stoplight (green paint marker) on the audibility of CD playback. Identical CD's, one treated with CD Stoplight and one without, were used. My colleague would stand in front of the CD transport, blocking my view, with his back to me. He would then switch between CD's and play the same short passage of music, and record my guess as to whether the one or the other CD was being played. After some repetitions, we exchanged roles. This was not exactly an ABX test since the test operator was aware of which CD was being played and recorded the results.
In each case of test subjects, we guessed correctly for 5 turns before randomity apparently set in (we were engineers, not statisticians).
From this test, I concluded that there was indeed an apparent slight difference (whether due to CD Stoplight or the CD pressings) to be detectable until the tedium of listening fatigue with the same passage of music, set in.
Several months ago, I was reading "Synchronicity: An Acausal Connecting Principle" (1952) by C. G. Jung. In this monograph, Jung refers to experiments conducted by another scientist at a different institution. These were ESP tests with the subject and object at different locations in space, and in other tests separated by space and time. The results which Jung reported were the same as our CD Stoplight test: several correct identifications before random results ensued. In this case, he similarly attributed the transition to random results as being the result of fatigue due to tedium.
Reading this perked me up and made me wonder, were my colleague and I, decades ago, conducting an audio test, or an ESP test?
In each case of test subjects, we guessed correctly for 5 turns before randomity apparently set in (we were engineers, not statisticians).
From this test, I concluded that there was indeed an apparent slight difference (whether due to CD Stoplight or the CD pressings) to be detectable until the tedium of listening fatigue with the same passage of music, set in.
Several months ago, I was reading "Synchronicity: An Acausal Connecting Principle" (1952) by C. G. Jung. In this monograph, Jung refers to experiments conducted by another scientist at a different institution. These were ESP tests with the subject and object at different locations in space, and in other tests separated by space and time. The results which Jung reported were the same as our CD Stoplight test: several correct identifications before random results ensued. In this case, he similarly attributed the transition to random results as being the result of fatigue due to tedium.
Reading this perked me up and made me wonder, were my colleague and I, decades ago, conducting an audio test, or an ESP test?