The ear uses spectral shape to judge timbre, so nearby frequencies can compensate cuts.

Evidence

The second way of minimizing the subjective effects is to recognize that the ear uses the spectral shape as a cue to timbre. Therefore the effect of removing some frequency components by filtering may be partially compen­ sated by enhancing the amplitudes of the frequency components nearby, as discussed in Chapter 5. — David Howard, Jamie Angus, coustics and Psychoacoustics, 2400

The second way of minimizing the subjective effects is to recognize that the ear uses the spectral shape as a cue to timbre. Therefore, the effect of removing some frequency components by filtering may be partially compensated by enhancing the amplitudes of the frequency components nearby, as discussed in Chapter 5. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2416

Categorization

• DEFINE: States the perceptual principle (spectral shape as timbre cue) that justifies a concrete engineering technique.
• XREF: Explicitly builds on the timbre material from Chapter 5.
• corroborated: 2 independent passages support this claim — David Howard, Jamie Angus, coustics and Psychoacoustics, 2400; David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2416