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An investigation of low-level signal descriptors characterizing the noiselike nature of an audio signal

: Uhle, C.

Audio Engineering Society -AES-:
128th Audio Engineering Society Convention 2010. CD-ROM : May 22-25, 2010, London, UK
New York, NY: AES, 2010
Convention Paper 8035
Audio Engineering Society (Convention) <128, 2010, London>
Fraunhofer IIS ()

This publication presents an overview and an evaluation of low-level features characterizing the noiselike or tonelike nature of an audio signal. Such features are widely used for content classification, segmentation, identification, coding of audio signals, blind source separation, speech enhancement and voice activity detection. Besides the widely used Spectral Flatness Measure various alternative descriptors exist. These features are reviewed and the requirements for these features are discussed. The features in scope are evaluated using synthetic signals and exemplarily real-world applications related to audio content classification, namely voiced-unvoiced discrimination for speech signals and speech detection.