A novel noise suppression scheme for speech signals is proposed which is based on a neurophysiologically-motivated estimation of the local signal-to-noise ratio (SNR) in different frequency channels. For SNR-estimation, the input signal is transformed into so-called Amplitude Modulation Spectrograms (AMS), which represent both spectral and temporal characteristics of the respective analysis fra...

A novel dual-side mushroom ground plane (DMGP) structure is proposed for the noise suppression in high-speed multilayer printed circuit boards (PCBs). The proposed method is localized suppression technique where a dual-side mushroom structure is placed below the noise-sensitive device. In multilayer PCBs with DMGP, noise between two ports with large or small ports spacing can be minimized effec...

In order to suppress the influence of phase noise in OFDM communications systems, the correction of the common phase error (CPE) does not suffice always, especially when high data rates are required. In this paper we introduce a phase noise suppression algorithm which estimates higher spectral components of the phase noise process in the frequency domain, thus characterizing the deviation from ...

38 39 Internally-generated, spontaneous activity is ubiquitous in the cortex, yet it does 40 not appear to have a significant negative impact on sensory processing. Various 41 studies have found that stimulus onset reduces the variability of cortical 42 responses, but the characteristics of this suppression remained unexplored. By 43 recording multiunit activity from awake and anesthetized rats...

Internally generated, spontaneous activity is ubiquitous in the cortex, yet it does not appear to have a significant negative impact on sensory processing. Various studies have found that stimulus onset reduces the variability of cortical responses, but the characteristics of this suppression remained unexplored. By recording multiunit activity from awake and anesthetized rats, we investigated ...

Systems introduce noise into images. Spatial Filtering is required to reduce or eliminate the noise content and improve peak signal to noise ratio (PSNR). Spatial filtering is based on the assumption that noise has a high spatial frequency and, therefore, can be attenuated by a local operation which makes each pixel's intensity roughly consistent with those of its nearest neighbours. The develo...

We propose a nonlinear fiber system for shot-noise limited, all-optical intensity-noise reduction and signal amplification. The mechanism is based on the accumulation of different phase shifts between orthogonal polarization modes in polarization-maintaining amplifier combination with an implemented sinusoidal transmission-function. resulting correlation input intensity-fluctuations transmissio...