Line-spectrum pairs-a review

Smith, Alain; Schalkwyk, Johan

doi:10.1109/comsig.1988.49292

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“…Because of these two properties of the polynomials, they also have roots at z = 1 and z = −1 respectively. The other roots of P (z) and Q(z) appear interlaced on the unit circle of z-plane [7]. Spectral ux measures the change in the shape of the magnitude spectrum by calculating the difference between magnitude spectra of successive frames.…”

Section: Selected Audio Featuresmentioning

confidence: 99%

A comparison of audio features for elementary sound based audio classification

Gubka

Kuba

2013

The International Conference on Digital Technologies 2013

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In this paper we compare two sets of audio features in task of audio pattern searching based on elementary sound models. The rst set of features consist of well-known melfrequency cepstral coef cients together with their rst and second order time derivatives. The second set was chosen from bag of features by particle swarm optimization algorithm and consist of following audio features: line spectral frequencies (LSF), spectral ux (SFX) and zero crossing rate (ZCR). Experimental results performed on AudioDat sound database show improvement of above 18.6 % of average F-measure when using the second selected combination of features.

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Section: Selected Audio Featuresmentioning

confidence: 99%