Technology moving so fast that important findings are left behind

For example it has been well known for decades than ear brain octaves are very different from engineering octaves (x2 frequency). [Gauffin, Sundberg]. In general the human brain wants many more Hz so that the octave sounds correct. And it depends on how high the notes are. Pitch itself also depends on acoustic intensity. [Stevens]


Yet so many modern electronic tuners, midi setups, synthesizers are made ignoring this important knowledge and sounding like cheaper than cheap toys. [euroelectron]


Would a great editor of the excellent Wikipedia edit the article on Octave? [wikipedia]


Frequency and pitch are 2 different notions. Frequency is number of cycles per second measured in Hz, 1Hz is by definition 1 cycle per second. Pitch is the sensation of height of tone measured in Mels. [Stevens]. The word Mel comes from melody. There is not such thing as pitch in Hertz.


Of course great music is great music and great producers intonate by ear brain so that the music sounds correct to millions of listener's brains. For example the very high notes of the song I've had the Time of my Life from the Dirty Dancing soundtrack.


Another example of important knowledge that may be left behind perhaps undiscovered is the fact that electron tubes can brilliantly amplify with just a few volts anode voltage supply instead of hundreds of volts. This is possible if internal electron cloud negative bias is neutralized by an external positive voltage source. See for example the Pleiades V6 microphone head amplifier.


References:


Octaves and Pitch - Gauffin, Sundberg
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.431.8104&rep=rep1&type=pdf


http://www.mmk.ei.tum.de/fileadmin/w00bqn/www/Personen/Terhardt/ter/top/octstretch.html


Ear brain octave vs engineering octave - euroelectron


The Pleiades tuning - euroelectron


http://euroelectron.blogspot.com/2018/05/the-great-sounding-octaves-of-casio-mt.html


https://en.m.wikipedia.org/wiki/Octave


Sound and Hearing - S. S. Stevens, Warshofsky - Chapter 4: The Mind's Influence - Life science series


Pleiades V6 schematic - euroelectron