LP distortion is audible with test tones but masked by music.

Evidence

When two or more pure tones are heard together an effect known as “masking” can occur, where each individual tone can become more diffi­ cult or impossible to perceive, or it is partially or completely “masked,” due to the presence of another tone. In such a case the tone which causes the masking is known as the “masker” and the tone which is masked is known as the “maskee.” These tones could be individual pure tones, but, given the rarity of such sounds in music, they are more likely to be individual fre­ quency components of a note played on one instrument which mask either other components in that note, or frequency components of another note. — David Howard, Jamie Angus, coustics and Psychoacoustics, 1628 (#expands, via linked claim)

Categorization

  • XREF: connects to: Music’s dense spectrum masks its own distortion products. — , Toole, Floyd E - Sound reproduction-…, 451; Simultaneous tones become harder to perceive due to masking effects — David Howard, Jamie Angus, coustics and Psychoacoustics, 1628; Conventional distortion measurements include inaudible masked components (+1 more)

Broader Connections