Psychophysical Validation of a Proprioceptive Device by Cross-Modal Matching of Loudness
A large number of studies performed by S. S. Stevens, J. C. Stevens and their collaborators have estimated the intensity of one sensory modality by way of another one related to the proprioceptive sensation of muscular force and limb position. As such, using a cross-modal matching procedure, it should be possible to associate a proprioceptive sensation with an auditory sensation (e.g. loudness, brightness, roughness) having an equivalent strength. A new proprioceptive estimation device for the continuous unidimensional judgment of non stationary sounds has been developed, and in this paper we establish an individual calibration method and the loudness scale of stationary, 1-kHz pure tones by a cross-modal matching paradigm using the new device. The loudness scale and the proprioceptive scale related to muscular force applied to a unidimensional joystick with force feedback were evaluated independently by direct estimation techniques: ratio and magnitude production, absolute magnitude estimation. The proprioceptive function obtained is characterized by a power function with an exponent of 1.77. The results obtained with ratio scaling and cross-modal techniques are similar. However, the set of results obtained with the cross-modal technique appear more stable and less dependent on experimental conditions. Finally, these results allow us to envisage the use of this device for different auditory assessment applications.
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Document Type: Research Article
Publication date: May 1, 2000
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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