Multichannel audio is attracting rapidly increasing popularity in audio reproduction. In most cases, however, its transmission requirements are extremely demanding compared to the available bandwidth. One possible solution to this problem could be to transmit a reference channel and recreate the remaining channels at the receiving end. In this paper such a method is proposed by taking advantage...

In stereophonic acoustic echo cancellation (SAEC) problem, fast and accurate tracking of echo path is strongly required for stable echo cancellation. In this paper, we propose a class of efficient fast SAEC schemes with linear computational complexity (with respect to filter length). The proposed schemes are based on pairwise optimal weight realization (POWER) technique, thus realizing a “best”...

The stereophonic acoustic echo cancellation (SAEC) problem is usually modelled as a twoinput/two-output system with real random variables. Recently, the SAEC scheme was recast as a single-input/single-output system with complex random variables, thanks to the widely linear (WL) model. In this paper, we motivate the use of a more general form of the Kalman filter with the WL model for SAEC. Simu...

Analysis of the leaky least mean square (LMS) adaptive algorithm has justified the use of a leakage factor in many applications. In this work, a similar leakage factor is introduced in the two-channel LMS and the extended LMS (XLMS) algorithms for use in stereophonic acoustic echo cancellation. This is compared with the alternative of adding random white noise to the input stereo signals. Simul...

WC focus on the problem of stereophonic acoustic echo cancellation for teleconference applications. To limit the wcllknown detrimental effect of the correlation between the loudspeaker input signals, WC propose a new method which consists in adding to these signals random noises controlled by auditory properties. We describe this method in some details and a we show that its complexity can be f...

Multichannel audio rendering allows for the immersion of a listener into a rich acoustic scene, as compared to traditional stereophonic methods. Nevertheless, the excessive transmission and storage requirements of multichannel audio pose a considerable obstacle towards its widespread usage. A novel method is presented here with which a single channel of a multichannel signal is conventionally t...

In this paper, we propose a novel multi-pitch estimator for stereophonic mixtures, allowing for pitch estimation on multichannel audio even if the amplitude and delay panning parameters are unknown. The presented method does not require prior knowledge of the number of sources present in the mixture, nor on the number of harmonics in each source. The estimator is formulated using a sparse signa...

In this paper we propose the effect on the RF bandwidth when the DARC data signal is added to the ordinary FM broadcasting signal. Generally, the bandwidth of the commercial FM broadcasting signal is strictly restricted to 200KHz. Hence, even though the DARC data signal is added at the ordinary stereophonic FM signal, the required bandwidth should not exceed 200KHz. The simulation results show ...