A stereophonic echo canceler is proposed based on the Normalized LMS algorithm with orthogonal correction factors (NLMS-OCF). The echo canceler is modeled using a two-input single-output finite-impulse-response (FIR) structure. NLMSOCF updates the echo canceler coefficients based on multiple input vectors, while NLMS adapts the coefficients based on a single input vector. The proposed algorithm...

The stereophonic acoustic echo, due to the coupling between two loudspeakers and two microphones, can be modelled by a two-input/two-output system with real random variables. In this paper, we recast the problem as a single-input/single-output system with complex random variables, by using the widely linear (WL) model, and propose a new distortion method that fits well in this context. In order...

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background: ischemic heart diseases are the most common cardiovascular diseases. this study aimed to assess the effects of video training about risk factors based on health belief model on knowledge and attitude of myocardial infarction patients after discharge. methods: this was a quasi-experimental study conducted in 201...

Sound field control to create multiple personal audio spaces (sound zones) in a shared listening environment is an active research topic. Typically, sound zones in the literature have aimed to reproduce monophonic audio programme material. The planarity control optimization approach can reproduce sound zones with high levels of acoustic contrast, while constraining the energy flux distribution ...