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Convention Paper

Partial Spectral Flatness Measure for Tonality Estimation in a Filter Bank-Based Psychoacoustic Model for Perceptual Audio Coding

Authors: Taghipour, Armin; Jaikumar, Maneesh Chandra; Edler, Bernd; Stahl, Holger

AES Convention 134 · Paper 8824 · May 2013

Abstract

Perceptual audio codecs use psychoacoustic models for irrelevancy reduction by exploiting masking effects in the human auditory system. In masking, the tonality of the masker plays an important role and therefore should be evaluated in the psychoacoustic model. In this study a partial Spectral Flatness Measure (SFM) is applied to a filter bank-based psychoacoustic model to estimate tonality. The Infinite Impulse Response (IIR) band-pass filters are designed to take into account the spreading in simultaneous masking. Tonality estimation is adapted to temporal and spectral resolution of the auditory system. Employing subjective audio coding preference tests, the Partial SFM is compared with prediction-based tonality estimation.

Details

Published in
AES Convention 134
AES Convention
134
Paper number
8824
Publication date
May 6, 2013
Session subject
Audio Signal Processing
Affiliation
International Audio Laboratories Erlangen, Erlangen, Germany; Hochschule Rosenheim, University of Applied Science, Rosenheim, Germany (See document for exact affiliation information.)
Type
Convention Paper