Audio watermarking embeds inaudible, copy-surviving data into signals

Evidence

Measurements with microphones at ear level should be discouraged because they introduce acoustical interference irregularities that are tempting to equalize, but that are not audible problems to human listeners. Microphones should be elevated well above the seat backs, preferably at varied heights to average out regular patterns of interference. However, all such measurements are reliable at low frequencies. — , Toole, Floyd E - Sound reproduction-…, 1355 (#complicates, via linked claim)

Categorization

• XREF: connects to: Monitoring through a colored loudspeaker embeds its signature into the recording; Ear-level microphone measurements capture artifacts inaudible to human listeners — , Toole, Floyd E - Sound reproduction-…, 1355

Broader Connections

• Ear-level microphone measurements capture artifacts inaudible to human listeners #complicates (0.70) — , Toole, Floyd E - Sound reproduction-…, 1355