This study tested the hypothesis that object-based attention modulates the discrimination of level increments in stop-consonant noise bursts. With consonant-vowel-consonant (CvC) words consisting of an ≈80-dB vowel (v), a pre-vocalic (Cv) and a post-vocalic (vC) stop-consonant noise burst (≈60-dB SPL), we measured discrimination thresholds (LDTs) for level increments (ΔL) in the noise bursts pr...

Medical image enhancement is one of the most widely used medical processing techniques in domain. Its purpose to improve visual effect and facilitate analysis understanding by human or machine. The Laplace transform Sobel gradient operator are two common ways performing edge detection, sharpening enabling be enhanced. However, each has limitations when isolation. a good detection effect, but it...

An analysis-based non-linear feature extraction approach is proposed, inspired by a model of how speech amplitude spectra are affected by additive noise. Acoustic features are extracted based on the noiserobust parts of speech spectra without losing discriminative information. Two non-linear processing methods, harmonic demodulation and spectral peak-to-valley ratio locking, are designed to min...

background and aim: it will be discussed about five mechanisms in relation to speech in noise perception; including neural encoding and decoding, centrifugal pathways, pitch perception, asymmetric sampling in time and cognitive skills. these mechanisms are related to each other and each is important to recognize speech in noise. in this article, we have tried to rely on the latest studies to de...

A K-band CMOS broadband low noise amplifier (LNA) based on the magnetically coupled resonator (MCR) matching network technique is presented and implemented in 0.13-µm technology. Such LNA consists of two common-source (CS) pseudo-differential stages, which use capacitive neutralization to enhance inversion isolation Gain. The MCR-based input achieves good balance loss performance by inventing a...

The design and development of large scale, high quantum efficiency and high resolution silicon and silicon-germanium (Si/SiGe) avalanche photodiode (APD) focal plane arrays (FPAs) is an active topic of research due to the wide range of scientific, medical and industrial applications for such high sensitivity imagers. Avalanche photodiodes can attain single photon sensitive operation due the lar...

The paper reports on the noise and vibration control of a 451 m long steel railway bridge. The vibration and noise generation mechanisms were investigated first. Vibration of the rail fixture, sleeper, horizontal and main girders and the steel walking plates were measured, together with noise measurements in a number of measuring points both in the close vicinity of the bridge and at larger dis...

If not designed properly, the input section of an analog down-converter can introduce phase noise that can prevail over other noise sources in the system. In the paper we present residual phase noise measurements of a simplified input section of a classical receiver that is composed of various commercially available mixers and driven by an LO amplifier. Introduction A classical design approach ...

Daniel Abramovitch Hewlett-Packard Laboratories 1501 Page Mill Road, M/S 2U-10 Palo Alto, CA 94304 Abstract– This paper describes the PES Pareto Method, a useful tool for identifying and eliminating key contributors to uncertainty in the Position Error Signal (PES) of a magnetic disk drive[1, 2, 3]. Once identified and ranked according to their overall effect on PES, the top–ranking sources can...

Abstract KAGRA, the kilometer-scale underground gravitational-wave detector, is located at Kamioka, Japan. In April 2020, an astrophysics observation was performed KAGRA detector in combination with GEO 600 detector; this operation called O3GK. The optical configuration O3GK based on a power-recycled Fabry–Pérot–Michelson interferometer; all mirrors were set room temperature. duty factor of app...