A novel algorithm is introduced for estimating the echo path responses for stereophonic acoustic echo cancellation. When the Wiener solution for the echo path responses is non-unique, the echo paths are estimated in two stages. In a first stage, one of the non-unique Wiener solutions is estimated. Then in a second stage, a disturbance is introduced and the left and right misalignment vectors ca...

Multichannel audio offers significant advantages for music reproduction, including the ability to provide better localization and envelopment, as well as reduced imaging distortion. On the other hand, multichannel audio is a demanding media type in terms of transmission requirements. Often, bandwidth limitations prohibit transmission of multiple audio channels. In such cases, an alternative is ...

Many techniques have been developed concerning surround sound recording and the issue has turned out to be a challenge without a comprehensive theory. This paper presents an approach based on a full 3D acoustic field theory and the use of a 3D microphone array. Our research work has lead to a new spatial digital processing technique which allows the use of freely positioned capsules of any type...

Joint beamforming microphone arrays and multi-channel acoustic echo cancellation (AEC) can be ef£ciently applied for handsfree speech communication. Especially, systems relying on adaptive generalized sidelobe canceller (GSC) structures are very promising, since they combine high noise-reduction performance with computational ef£ciency. So far, robustness of the GSC was very challenging, due to...

Joint beamforming microphone arrays and multi-channel acoustic echo cancellation (AEC) can be efficiently applied for hands-free speech communication. Especially, systems relying on adaptive generalized sidelobe canceller (GSC) structures are very promising, since they combine high noise-reduction performance with computational efficiency. So far, robustness of the GSC was very challenging, due...