In this paper, the utilization of common fabrics for manufacturing e-textile metamaterial is investigated. The proposed design based on a transmission line loaded with split-ring resonators (SRRs) cotton substrate filter signal application. provides stop band between 2.7 GHz and 4.7 GHz, considering four stage SRR topology. Experimental results showed levels higher than −30 dB compact embroider...

Abstract. According to recent literature, the most appropriate preprocessing to improve P300 detection is still unknown or at least there is no consensus about it. Research papers refer to different low-pass filters, high-pass filters, baseline, subsampling or feature selection. In this paper, using a database with 23 healthy subjects we compare the effect on the letter accuracy (single-trial d...

this paper presents a novel microstrip low-pass filter with good performance. a complete detailed theoretical analysis for the proposed filter is given using equivalent circuit models. the proposed filter applying multiple cascaded modified radial stubs resonators provides a sharp cut off frequency response that has a 185 db/ghz roll off rate. also, u-shaped attenuators provide a wide stop-band...

In this paper, a new bipolar junction transistor (BJT) based configuration for providing first-order resistorless current-mode (CM) all-pass, low-pass and high-pass filter responses from the same configuration is suggested. The proposed circuit called as a first-order universal filter possesses some important advantages such as consisting of a few BJTs and a grounded capacitor, consuming very l...

The problem of the realization of integral sliding mode controllers based only on output information is discussed. The implementation of an output integral sliding mode controller ensures insensitivity of the state trajectory with respect to the matched uncertainties from the initial time moment. In the case when the number of inputs is more than or equal to the number of outputs, the closed lo...

A channel delay can be estimated by evaluating the channel response to a deterministic signal. In the frequency domain, a maximum likelihood delay estimator which accounts for colored Gaussian measurement noise can be formulated. A procedure that allows fast estimation of the channel delay is proposed, in case a low-pass deterministic signal is applied to the channel. Keywords—Fractional delay;...

This study aims to investigate the role of intonation in the perception of emotion in spoken Brazilian Portuguese (BP). Recordings of 32 BP speakers were downloaded from the internet and presented to 36 listeners divided equally into two nationality groups (Brazilian vs. English). The participants performed two perception experiments, one based on normal speech and the other on delexicalised (l...