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My list of “10 worst mistakes in Audio” (some of which are pet peeves). J. D. (jj) Johnston Neural Audio Kirkland, Wa , USA. #10. Applying tube circuit design to transistors Yes, it’s over and done with. Thankfully. #9. Magnitude (frequency) Response
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My list of “10 worst mistakes in Audio”(some of which are pet peeves) J. D. (jj) Johnston Neural Audio Kirkland, Wa, USA
#10 • Applying tube circuit design to transistors • Yes, it’s over and done with. Thankfully. #9 • Magnitude (frequency) Response • Without phase, amazing things can slide by.
#8 • Signal to Noise Ratio • That includes THD, IMD, TIM … • ‘A message weight’ – No, it’s not for music! #7 • Making an audio demonstration in a paper, workshop, or tutorial session at any conference, anywhere.
#6 • “we’ll never understand” • When I started in audio, I heard this over and over. • It’s not true, either. • Understanding has often been waiting in the wings from the IEEE or ASA for years before it arrives in the audio community. • Nobody understands how the ear works • Yes, it’s hard to understand, but we do have a good idea • Giving up doesn’t help anyone. #5 • Giving people a pan pot • Not telling them how it works • Not explaining how the ear hears it • Not including time delay • Worrying about “mono compatibility” any time after 1990
#4 • Pointing out that in blind testing, “slightly louder is perceived as better” • It’s a fact. • It doesn’t justify a loudness race #3 • Forgetting that digital designs must include analog sometime • Grounding • Noise • All manner of digital techniques that don’t work in analog audio • I won’t even mention computers. Oh. I did.
#2 • Trying to apply analog processing to digital systems • Distortion works differently • Filters work differently • Noise methods are different • Resolution issues are different • It’s never going to work!!!!
#1 • Letting anyone find out just how low you could turn the bit rate in a perceptual coder and still get something remotely approximating music. • Do I really need to explain this one? • Do you really think anyone could have stopped them?
The Takeaways • New things come along. Resistance is futile, you will be assimilated • You don’t want something new every time you have a new problem! • Enthusiasm for the new does not excuse excess.