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???? What level of nonlinear distortion can a person hear? Modern sound reproduction equipment has impressive performance - the level of nonlinear distortion has reached microscopic values. But maybe this is not enough? What is the reason for the desire of audiophiles to have a harmonic coefficient or nonlinear distortion in thousandths of a percent and at the same time buy or build tube amplifiers that have distortions orders of magnitude worse than modern sound reproduction equipment? This film discusses what nonlinear distortion is, how it is measured, what is the qualitative composition of the spectrum of the distorted signal. And finally, the viewer can personally listen to some test phonograms with various distortions and determine whether he can approximately determine the harmonic coefficients of certain amplification or sound reproduction devices by the sound of various musical and non-musical phonograms. Please take this test and share your results in the comments. This will be valuable information for clarifying the question of which nonlinear distortions can be considered acceptable for reproducing this or that audio information. Analysis of your reports in this video – • Distortions – self-deception or truth? ???? Support the channel – https://boosty.to/ensemb 00:00 Enticement 1:08 Acceptable level of harmonics 2:41 Initial test conditions 3:44 Harmonic and nonlinear distortion coefficients. Difference 5:10 Logging 5:30 Test 1. Determining the KG of a sinusoidal signal 7:05 Answers and explanations for the first test 8:03 What is the difference between tube and transistor distortion? 12:50 Signal models 14:02 Test 2. Piano music 18:04 Answers to the second test 18:44 Test 3. Rock 21:17 Answers to the third test 21:31 Test 4. Vocals 25:37 Answers to the fourth test 25:56 Conclusions 26:08 Test 5. Speaker's voice 27:10 Answers to the fifth test #audiotechnics, #distortion