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Group Delay Function from All-Pole Models for Musical Instrument Recognition

Conference paper
First Online:
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8905)

Abstract

In this work, the feature based on the group delay function from all-pole models (APGD) is proposed for pitched musical instrument recognition. Conventionally, the spectrum-related features take into account merely the magnitude information, whereas the phase is often overlooked due to the complications related to its interpretation. However, there is often additional information concealed in the phase, which could be beneficial for recognition. The APGD is an elegant approach to inferring phase information, which lacks of the issues related to interpreting the phase and does not require extensive parameter adjustment. Having shown applicability for speech-related problems, it is now explored in terms of instrument recognition. The evaluation is performed with various instrument sets and shows noteworthy absolute accuracy gains of up to 7 % compared to the baseline mel-frequency cepstral coefficients (MFCCs) case. Combined with the MFCCs and with feature selection, APGD demonstrates superiority over the baseline with all the evaluated sets.

Keywords

Musical instrument recognition Music information retrieval All-pole group delay feature Phase spectrum 
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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  1. 1.Department of Signal ProcessingTampere University of TechnologyTampereFinland
  2. 2.School of Computing and Electrical EngineeringIndian Institute of TechnologyMandiIndia

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