The bag-of-frames approach: a not so sufficient model for urban soundscapes - Archive ouverte HAL
Journal Articles Journal of the Acoustical Society of America Year : 2015

The bag-of-frames approach: a not so sufficient model for urban soundscapes

Abstract

The "bag-of-frames" approach (BOF), which encodes audio signals as the long-term statistical distribution of short-term spectral features, is commonly regarded as an effective and sufficient way to represent environmental sound recordings (soundscapes) since its introduction in an influential 2007 article. The present paper describes a concep-tual replication of this seminal article using several new soundscape datasets, with results strongly questioning the adequacy of the BOF approach for the task. We show that the good accuracy originally re-ported with BOF likely result from a particularly thankful dataset with low within-class variability, and that for more realistic datasets, BOF in fact does not perform significantly better than a mere one-point av-erage of the signal's features. Soundscape modeling, therefore, may not be the closed case it was once thought to be. Progress, we ar-gue, could lie in reconsidering the problem of considering individual acoustical events within each soundscape.
Fichier principal
Vignette du fichier
lagrangeBof2014.pdf (119.07 Ko) Télécharger le fichier
Origin Files produced by the author(s)
Loading...

Dates and versions

hal-01082501 , version 1 (13-11-2014)
hal-01082501 , version 2 (10-06-2016)

Identifiers

Cite

Mathieu Lagrange, Grégoire Lafay, Boris Defreville, Jean-Julien Aucouturier. The bag-of-frames approach: a not so sufficient model for urban soundscapes. Journal of the Acoustical Society of America, 2015, 138 (5), pp.487-492. ⟨hal-01082501v2⟩
764 View
251 Download

Altmetric

Share

More