Wave Field Synthesis enables the creation of a correct spatial impression for an extended listening area. However, the synthesized sound scenes are most often created with a model-based rendering approach. This enables, beside other advantages, interactivity of the listener with the sound scene. On the downside it requires anechoic recordings of every sound event of the sound scene, a requireme...

Teleconferencing systems employ acoustic echo cancelers to reduce echoes that results from the coupling between loudspeaker and microphone. To enhance the sound realism, two-channel audio is necessary. However, stereophonic acoustic echo cancellation is more difficult to solve because of the necessity to uniquely identify two acoustic paths, which becomes problematic since the two excitation si...

A novel stereophonic noise reduction method is proposed based upon a combination of cascaded subspace filters, with delay and advancing elements alternatively inserted between the adjacent cascading stages, and two-channel adaptive signal enhancers. Simulation results based upon real stereophonic speech contaminated by two correlated noise components show that the proposed method gives improved...

The thesis treats theory and implementation aspects for stereophonic acoustic echo cancellation. In Paper I a complete implementation of a stereophonic acoustic echo canceler based on the two-channel fast recursive least-squares algorithm is presented. An analysis of the system calculation complexity is also given, in addition to simulation results on recorded real-life data. Paper II presents ...

In natural hearing we sense direction, distance and surrounding space of a sound source. In stereo playback over loudspeakers at +/-30 0 we perceive real and phantom sources. Auditory cues for source direction, distance and surroundings are present, but are often corrupted by the loudspeakers themselves, by their placement in the room and by room reflections due to their radiation pattern. Loud...

In this paper we will discuss a model aimed at improving the spectral data representation of stereophonic audio in a way that allows efficient stereophonic data visualization and linear manipulation of arbitrary parts of the stereo image. The stereo pair is here interpreted as a single spectrum with additional dimensions, expressing the Interaural Intensity Difference (IID) and Interaural Phase...

Recent technological trends facilitate threedimensional stereophony. To this day, no internationally agreed standard for three-dimensional sound reproduction exists. Fundamental research is needed to define basic system parameters and ensure compatibility between different formats. Background in spatial audio perception, stereophonic audio reproduction, and automatic channel format conversion i...

In the last few years, a revolution has occurred in the area of consumer audio. Similarly to the transition from analog to digital sound that took place during the 80s, we have been experiencing the transition from 2-channel stereophonic sound to multichannel sound (e.g., 5.1 systems). Future audiovisual systems will not make distinctions regarding whether the user will be watching a movie or l...

This paper presents a new approach for Stereophonic acoustic echo cancellation (SAEC), based on a combination of J-H network and the natural gradient algorithm. In the new approach for SAEC, Computer simulations show that echoes are significantly reduced. Disciplines Physical Sciences and Mathematics Publication Details Ge, F., Premaratne, P. & Xi, J. (2005). Stereophonic acoustic echo cancella...