Joint acoustic and modulation frequency
type: Item
instance of: scholarly article
title: Joint acoustic and modulation frequency
zbMATH Open document ID: 1084.68883
DOI: 10.1155/S1110865703305013
author: Les Atlas
author: Shihab A. Shamma
published in: EURASIP Journal on Applied Signal Processing
publication date: 2004-10-28T00:00:00Z
review text: Summary: There is a considerable evidence that our perception of sound uses important features which are related to underlying signal modulations. This topic has been studied extensively via perceptual experiments, yet there are few, if any, well-developed signal processing methods which capitalize on or model these effects. We begin by summarizing evidence of the importance of modulation representations from psychophysical, physiological, and other sources. The concept of a two-dimensional joint acoustic and modulation frequency representation is proposed. A simple single sinusoidal amplitude modulator of a sinusoidal carrier is then used to illustrate properties of an unconstrained and ideal joint representation. Added constraints are required to remove or reduce undesired interference terms and to provide invertibility. It is then noted that the constraints would be also applied to more general and complex cases of broader modulation and carriers. Applications in single-channel speaker separation and in audio coding are used to illustrate the applicability of this joint representation. Other applications in signal analysis and filtering are suggested.
Mathematics Subject Classification ID: 68T10
Mathematics Subject Classification ID: 94A14
zbMATH DE Number: 2111329
zbMATH Keywords: digital signal processing
zbMATH Keywords: modulation spectrum
MaRDI profile type: Publication
full work available at URL: s1110865703305013
OpenAlex ID: W2103253424
description: scientific article; zbMATH DE number 2111329