Multiclass MTS for Saxophone Timbre Quality Inspection Using Waveform-shape-based Features

Under the highly developed automation today, the manufacture of saxophone is still a nonautomatic process and much relies on highly skilled technicians. In order to insure the timbre quality, the sound of finished saxophone must be tested in the final inspection stage. The evaluation of timbre quali...

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Bibliographic Details
Published in:IEEE transactions on cybernetics 2009-06, Vol.39 (3), p.690-704
Main Authors: Hsiao, Yu-Hsiang, Su, Chao-Ton
Format: Article
Language:English
Subjects:
Acoustic testing
Assembly
Auditory system
Classification
Cybernetics
Feature extraction
feature selection
Hearing
Humans
Inspection
Instruments
Mahalanobis-Taguchi system (MTS)
Manufacturing automation
Manufacturing processes
Mathematical models
multiclass classification
musical instrument classification
Parametrization
Perception
saxophone
sound signal
Studies
Timbre
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Summary:Under the highly developed automation today, the manufacture of saxophone is still a nonautomatic process and much relies on highly skilled technicians. In order to insure the timbre quality, the sound of finished saxophone must be tested in the final inspection stage. The evaluation of timbre quality mainly depends on the professional musicians' hearing judgment; however, the sensitivity of human perception can be influenced by many factors. To improve the reliability of saxophone timbre quality inspection, an automatic multiclass timbre classification system (AMTCS) is developed and used to assist in the inspection work. The AMTCS is composed of our proposed waveform-shape-based feature extraction method in parameterization phase and multiclass Mahalanobis-Taguchi system in classification phase. The numerical experiments show that the musical instrument classification accuracy obtained by our proposed AMTCS is satisfactory. Through employing the AMTCS, strong assistance was provided to the inspection of saxophone timbre quality, and a perfect identification rate on the saxophones with different timbre quality levels is achieved. Moreover, the significant tones having impact on saxophone timbre quality can also be easily identified by AMTCS.
ISSN:1083-4419
2168-2267
1941-0492
2168-2275
DOI:10.1109/TSMCB.2008.2008632