Verbal timbre descriptors are ambiguous across speakers but map onto specific spectral regions.

Evidence

Timbral descriptions also have their place in musician/sound engineer communication, but this is not a trivial task, since many of the words employed have different meanings depending on who is using them. Figure 5.9 shows a diagram adapted from Katz (2007) in which timbral descriptors are presented that relate to boosting or reducing energy in the spectral regions indicated set against a keyboard, frequency values spanning the normally quoted human hearing range of 20 Hz to 20 kHz and terms (“subbass,” “bass,” “midrange” and “treble”) commonly used to describe spectral regions. The timbral descriptors are separated by a horizontal line, which indicates whether the energy in the frequency region indicated has to be increased or decreased to modify the sound as indicated by the timbral term. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1510

Categorization

• DEFINE: Lays out the standard spectral-region vocabulary—subbass, bass, midrange, treble—spanning the 20 Hz to 20 kHz hearing range.
• XREF: Connects to Katz (2007), a practical mixing reference, bridging psychoacoustics to studio craft. — connects to: Masked spectral components do not contribute to perceived timbre — David Howard, Jamie Angus, coustics and Psychoacoustics, 1645; Filtering alters timbre, but nearby spectral boosting can partially offset the loss; Timbre perception can be analyzed through component-to-component masking interactions — David Howard, Jamie Angus, coustics and Psychoacoustics, 1645 (+6 more)

Broader Connections

• Spatial separation of talkers reduces ambiguity in assigning speech components. #corroborates (0.95) — Dijk, Pim van, Physiology, Psychoacoustics and…, 1671
• Spectral variations inside one critical band alter perceived timbre #expands (0.95) — Toole, Floyd E, Sound reproduction- the acoustics and…, 962
• Filtering alters timbre, but nearby spectral boosting can partially offset the loss #expands (0.90)
• Masked spectral components do not contribute to perceived timbre #qualifies (0.85) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1645
• Instrument timbre differences stem from harmonic spectra that shape masking breadth #qualifies (0.85) — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 449
• Timbre comprises spectral content and how frequencies and amplitudes shift over a note #qualifies (0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1427
• Timbre perception can be analyzed through component-to-component masking interactions #complicates (0.80) — David Howard, Jamie Angus, coustics and Psychoacoustics, 1645
• Equalizer adjustments at specific frequencies produce predictable perceptual shifts in timbre #complicates (0.80)
• Speaker and instrument directivity at high frequencies alters perceived timbre #complicates (0.80) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1796