Subgrouping is a mixing technique where the outputs of a subset of audio tracks in a multitrack are summed to a single audio bus. This is done so that the mix engineer can apply signal processing to an entire subgroup, speed up the mix work flow and manipulate a number of audio tracks at once. In this work, we investigate which audio features from a set of 159 can be used to automatically subgr...

An audio-visual speaker identification system is described, where the audio and visual speech modalities are fused by an automatic unsupervised process that adapts to local classifier performance, by taking into account the output score based reliability estimates of both modalities. Previously reported methods do not consider that both the audio and the visual modalities can be degraded. The v...

As the latest extension of MPEG-4 Audio coding, MPEG-4 Lossless Audio Coding includes a scalable audio coding solution (SLS) that integrates the functionalities of lossless audio coding, perceptual audio coding, and fine granular scalable audio coding into a single coder framework while providing backward compatibility to MPEG Advanced Audio Coding (AAC) at the bit-stream level. Despite its abu...

A hierarchical system for audio classiication and retrieval based on audio content analysis is presented in this paper. The system consists of three stages. The audio recordings are rst classiied and segmented into speech, music, several types of environmental sounds, and silence, based on morphological and statistical analysis of temporal curves of the energy function, the average zero-crossin...

A hierarchical system for audio classi cation and retrieval based on audio content analysis is presented in this paper. The system consists of three stages. The audio recordings are rst classi ed and segmented into speech, music, several types of environmental sounds, and silence, based on morphological and statistical analysis of temporal curves of the energy function, the average zero-crossin...

Audio steganography deals with a method to hide a secret message in an audio file. Also, Audio steganography can be used for secret watermarking or concealing ownership or copyright information in the audio that can be verified later to justify ownership right. A direct Least Significant Bit (LSB) substitution method is one of the most simple and popular techniques used for audio steganography;...

In this report we present an overview of the approaches and techniques that are used in the task of automatic audio segmentation. Audio segmentation aims to find changing points in the audio content of an audio stream. Initially, we present the basic steps in an automatic audio segmentation procedure. Afterwards, the basic categories of segmentation algorithms, and more specific the unsupervise...

Present bottom-up audio attention computational model extracts the underlying characteristics of single channel audio such as energy, pitch, zero crossing rate etc., to calculate the audio signal attention level. In audio surveillance, sound source whose directions change rapidly should have higher attention level. But present audio computational models cannot effectively express the audio atte...

This paper deals with the modifications of the audio signal in a parametric audio coder at the decoder stage. The parametric audio coder is based on the application of adaptive signal models for each audio signal component. These adaptive signal models are obtained by using different approaches so as to extract a multi-part model from the audio signal. The audio signal is supposed to be constit...