Concept

Digital audio

Related publications (197)

Audio Coding Based on Long Temporal Contexts

We describe novel audio coding technique designed to be utilized at medium bit-rates. Unlike classical state-of-the-art audio coders that are based on short-term spectra, our approach uses relatively long temporal segments of audio signal in critical-band- ...

IDIAP2006

Multimodal Speaker Localization in a Probabilistic Framework

Jean-Philippe Thiran, Mihai Gurban

A multimodal probabilistic framework is proposed for the problem of finding the active speaker in a video sequence. We localize the current speaker's mouth in the image by using the video and the audio channels together. We propose a novel visual feature t ...

IEEE2006

FD SOI Hall sensor electronics interfaces for energy measurement

Maher Kayal

This paper presents a SOI Hall sensor based microsystem for energy measurement. The mixed-mode signal circuitry has been entirely designed and integrated in the experimental 0.5 mu m fully depleted SOI 3 V technology. It consists of an integrated Hall elem ...

2006

Improved Time Delay Analysis/Synthesis for Parametric Stereo Audio Coding

Christof Faller, Christophe Tournery

For parametric stereo and multi-channel audio coding, it has been proposed to use level difference, time difference, and coherence cues between audio channels to represent the perceptual spatial features of stereo and multi-channel audio signals. In practi ...

2006

Distributed Compression in Acoustic Sensor Networks Using Oversampled A/D Conversion

Martin Vetterli, Olivier Roy

We address the problem of distributed compression in acoustic sensor networks. A typical scenario consists of a set of microphones that record a sound source located at some unknown position. The goal then is to convey the corresponding audio signals to a ...

2006

Wide-Band Perceptual Audio Coding based on Frequency-Domain Linear Prediction

Petr Motlicek, Hynek Hermansky

In this paper we propose an extension of the very low bit-rate speech coding technique, exploiting predictability of the temporal evolution of spectral envelopes, for wide-band audio coding applications. Temporal envelopes in critically band-sized sub-band ...

IDIAP2006

Blind Audio-Visual Source Separation Using Sparse Redundant Representations

Pierre Vandergheynst, Gianluca Monaci, Anna Llagostera Casanovas

This report presents a new method to confront the Blind Audio Source Separation (BASS) problem, by means of audio and visual information. In a given mixture, we are able to locate the video sources first and, posteriorly, recover each source signal, only w ...

2006

Audiovisual Gestalts

Pierre Vandergheynst, Gianluca Monaci

This paper presents an algorithm to correlate audio and visual data generated by the same physical phenomenon. According to psychophysical experiments, temporal synchrony strongly contributes to integrate cross-modal information in humans. Thus, we define ...

2006

Speech Enhancement and Recognition in Meetings with an Audio-Visual Sensor Array

Daniel Gatica-Perez

We address the problem of distant speech acquisition in multi-party meetings, using multiple microphones and cameras. Microphone array beamforming techniques present a potential alternative to close-talking microphones by providing speech enhancement throu ...

IDIAP2006

Automatic genre classification of music content

Giorgio Zoia, Nicolas Scaringella

This paper reviews the state-of-the-art in automatic genre classification of music collections through three main paradigms: expert systems, unsupervised classification, and supervised classification. The paper discusses the importance of music genres with ...

2006

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