Fig. 2From: Robust feature representation for classification of bird song syllablesThe corresponding first left and right singular vectors of the filtered ambiguity spectra of syllables A and B in Fig. 1: a the left singular vectors, \(\mathbf {u}^{(A)}_{1}\) and \(\mathbf {u}_{1}^{(B)}\); b the right singular vectors, \(\mathbf {v}^{(A)}_{1}\) and \(\mathbf {v}_{1}^{(B)}\) Back to article page