In this paper the correction of the degradation of the stereophonic illusion during sound reproduction due to off-center listening is investigated. The main idea is that the directivity pattern of a loudspeaker array should have a well-defined shape such that a good stereo reproduction is achieved in a large listening area. Therefore, a mathematical description to derive an optimal directivity ...

FOR STEREOPHONIC ACOUSTIC ECHO CANCELLATION Tetsuya Hoya, Jonathon A. Chambers, and Patrick A. Naylor Communications and Signal Processing Group, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology, and Medicine, University of London SW7 2BT, U.K. e-mail: [email protected] ABSTRACT One of the fundamental problems in Stereophonic Acoustic Echo Cancellation ...

The introduction of new techniques for audio reproduction such as binaural technology, Wave Field Synthesis and Higher Order Ambisonics is accompanied by a paradigm shift from channel-based to object-based transmission and storage of spatial audio. The separate coding of source signal and source location is not only more efficient considering the number of channels used for reproduction by larg...

Spatialization can be used in sonification as an additional mapping dimension. Immersive spatialization also transmits more auditory data to a subject, compared to monophonic or stereophonic presentation. In this study the VBAP spatialization method is applied to the sonification of meteorological data gathered from a large geographical area in two different listening conditions. Parameter-driv...

Teleconferencing systems employ acoustic echo cancelers to reduce echoes that result from coupling between the loudspeaker and microphone. To enhance the sound realism, twochannel audio is necessary. However, in this case (stereophonic sound) the acoustic echo cancellation problem is more difficult to solve because of the necessity to uniquely identify two acoustic paths. In this paper, we expl...

Many applications of Music Information Retrieval can benefit from effective isolation of the music sources. Earlier work by the authors led to the development of a system that is based on Azimuth Discrimination and Resynthesis (ADRess) and can extract the singing voice from reverberant stereophonic mixtures. We propose an extension to our previous method that is not based on ADRess and exploits...

Today, digital recording of live lectures is a common practice at many universities. This article provides an historical overview of this idea, from the first approaches starting 40 years ago to present-day systems and questions still subject of research. Zusammenfassung Die digitale Aufzeichnung von Vorlesungen ist heute an Hochschulen Alltag. Der Beitrag beschreibt die 40-jährige Entwicklung ...

The underdetermined blind audio source separation problem is often addressed in the time-frequency domain by assuming that each time-frequency point is an independently distributed random variable. Other approaches which are not blind assume a more structured model, like the Spectral Gaussian Mixture Models (Spectral-GMMs), thus exploiting statistical diversity of audio sources in the separatio...