Zero-if transceivers suffer from the imbalance of the I and Q paths. By using a complex low-pass filter topology instead of a conventional pair of real low-pass filters, this imperfection can be reduced. Both analytical and numerical analysis show that the proposed technique is significantly more robust to circuit imperfections than the traditional architecture.

The “shape” of the desired frequency passband is an important consideration in the design of nonseparable multidimensional ( -D) filters in -D multirate systems. For -D th-band filters, the passband shape should be chosen such that the th-band constraint is satisfied. The most commonly used shape of the passband for -D th-band low-pass filters is the so-called symmetric parallelepiped (SPD) . I...

A novel topological and computational method for ‘motion’ is described. Motion is constrained by inequalities in terms of Kolmogorov Complexity. Causality is obtained as the output of a high-pass filter, passing through only high values of Kolmogorov Complexity. Motion under the electromagnetic field described with immediate relationship with G2 Holonomy group and its corresponding dense free 2...

In this paper, a technique for temporal embedding of a multibit watermark on an audio signal is proposed. The method is based on generating a chaotic sequence which is used for modifying the audio samples. A chaotic sequence generates the watermark, while the parameters of the embedding procedure are chosen so as to minimize the perceivable distortion of the initial signal, while preserving the...

We tested the hypothesis that, given the consistency of tonesyllable alignment found in recent research, accuracy of tone perception is dependent on the accuracy of syllable perception. In two experiments, subjects either judged the number of syllables or identified the tones in nonsense sentences that were spectrally intact, low-pass filtered at 300 Hz or converted to sustained schwa carrying ...

In this paper, we propose the parameterization of all robust stabilizing simple multi-period repetitive controllers with the specified input-output characteristic. Recently, Yamada et al. proposed the parameterization of all robust stabilizing simple multi-period repetitive controllers for the plant with uncertainty such that the controller works as a robust stabilizing multi-period repetitive ...

In this paper, a supra-threshold spatio-velocity CSF experiment is described. It consists in a contrast matching task with a methods of limits procedure. Results enable the determination of contrast perception functions which give, for given spatial and temporal frequencies, the perceived contrast of a moving stimulus. These contrast perception functions are then used to construct supra-thresho...

In the present paper a multilayered microstrip low pass filter using complementary split ring resonator is proposed. A design for prominent stop band characteristics with minimized ripples is presented, while maintaining the filter pass-band performance. By properly designing and integrating the complementary split ring resonators with the low pass filter, the proposed structure exhibit superio...

This paper describes a system for Chinese pronunciation and listening training on the Internet. The target Chinese stop consonants /b/, /p/, /d/, /t/ were chosen for this experiment. In the pronunciation component, a dynamic low-pass ltered power(DLP) was used as an acoustic feature to discriminate between aspirated sounds and unaspirated sounds. With the sounds uttered by Chinese native speake...

A new algorithm is introduced that performs spatially adaptive enhancement on low-light visible and infrared images of the same scene and fusion of these into one composite image. The algorithm involves lowpass/high-pass ltering and simple nonlinear operations that can be table driven. Examples of the processing on image data collected in eld tests are given.