Concept

Digital audio

Related publications (197)

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Parametric coding of spatial audio

Christof Faller

A wide range of techniques for coding a single speech or audio signal channel have been developed over the last few decades. In addition to pure redundancy reduction, sophisticated source and receiver models have been considered for reducing the bitrate. O ...

EPFL2004

Clustering And Segmenting Speakers And Their Locations In Meetings

Guillaume Lathoud, Jitendra Ajmera

This paper presents a new approach toward automatic annotation of meetings in terms of speaker identities and their locations. This is achieved by segmenting the audio recordings using two independent sources of information : magnitude spectrum analysis an ...

2004

Method and System for Combining Video Sequences With Spatio-temporal Alignment

Martin Vetterli, Serge Ayer

Given two video sequences, a composite video sequence can be generated which includes visual elements from each of the given sequences, suitably synchronized and represented in a chosen focal plane. For example, given two video sequences with each showing ...

2004

An Online Audio Indexing System

Hervé Bourlard, Jitendra Ajmera

This paper presents overview of an online audio indexing system, which creates a searchable index of speech content embedded in digitized audio files. This system is based on our recently proposed offline audio segmentation techniques. As the data arrives ...

2004

Multimodal Analysis Using Redundant Parametric Decompositions

Pierre Vandergheynst, Gianluca Monaci, Oscar Divorra Escoda

In this work we explore the potentialities of a representational framework based on Matching Pursuit (MP) for the decomposition of audio-visual signals over redundant dictionaries. It is relatively easy for a human to correctly interpret a scene consisting ...

2004

Detecting Group Interest-level in Meetings

Daniel Gatica-Perez, Samy Bengio, Dong Zhang

Finding relevant segments in meeting recordings is important for summarization, browsing, and retrieval purposes. In this paper, we define relevance as the interest-level that meeting participants manifest as a group during the course of their interaction ...

IDIAP2004

Clustering And Segmenting Speakers And Their Locations In Meetings

Guillaume Lathoud, Jitendra Ajmera

IDIAP2003

An Online Audio Indexing System

Hervé Bourlard, Jitendra Ajmera

IDIAP2003

Adaptive differential pulse-coded modulation with exponential tracking

Ali H. Sayed

This paper first investigates a companded differential pulse-coded modulator and. derives an expression for its SNR performance. Analysis and simulations show that, the coder has superior SNR and dynamic range performance over other coders of similar compl ...

2003

Analog and Mixed-Signal Modelling with SystemC-AMS

Alain Vachoux

SystemC will become more and more important for the design of digital circuits from the specification down to the RT-Level. Complex systems often contain analog components. This paper introduces concepts for the extension of the SystemC methodology for the ...

2003