Timbre served as a residual basket for non-loudness non-pitch sensations

Evidence

Previously, there has been a tendency to transfer everything in steady-state sounds not related to the sensations of loudness or pitch, to a residual basket of sensations called timbre. Using this definition of timbre, it is necessary to extract from the mixture of sensations those that may be important. The sensation of “sharpness”, which may be related to what is called “density”, seems to be one of these. Closely related to sharpness, however inversely, is a sensation called sensory pleasantness. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1339

Categorization

• DEFINE: Defines timbre as the residual category of non-loudness, non-pitch sound sensations.
• corroborated: 2 independent passages support this claim — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1339
• XREF: connects to: Timbre lacks a one-dimensional subjective scale unlike pitch and loudness — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1425; Timbral neutrality drives 69.5 percent of sound-quality preference; Timbre is conditioned entirely by the strength and presence of overtones — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1426 (+3 more)

Broader Connections

• Timbre lacks a one-dimensional subjective scale unlike pitch and loudness #expands (0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1425