With the government's emphasis on environmental issues of power transmission and transformation project, noise pollution has become a prominent problem now. The noise from the working transformer, reactor, and other electrical equipment in the substation will bring negative effect to the ambient environment. This paper focuses on using acoustic software for the simulation and calculation method...

An automatic particle picking algorithm for processing electron micrographs of a large molecular complex, the 26S proteasome, is described. The algorithm makes use of a coherence enhancing diffusion filter to denoise the data, and a random forest classifier for removing false positives. It does not make use of a 3D reference model, but uses a training set of manually picked particles instead. F...

A technique is described for a better than 5 dB reduction in the Peak to Average Power Ratio (PAPR) of an OFDM signal. The optimal amplitude and phase of additional peak reduction carriers (PRC) is obtained using a codebook, which is obtained using a search of all possible signal combinations.

Shock excitations are normally random process realizations, and most of our efforts to represent them either directly or indirectly reflect this fact. The most common indirect representation of shock sources is the shock response spectrum. It seeks to establish the damage-causing potential of random shocks in terms of responses excited in linear, single-degree-of-freedom systems. This paper sho...

The goal of this paper is to locate and understand the fine fundamental problems that exist in the representation of speech sounds by a very high quality speech analysis/synthesis engine namely STRAIGHT. The approach followed here is the evaluation of this system using subjective measures. We use the diagnostic rhyme test (DRT) to evaluate the intelligibility of speech analysed and synthesised ...

Langevin [8] introduced a probabilistic model to describe the evolution of a particle under random external forcing. Langevin’s motion has smooth trajectories, in the sense that if Yt stands for the position of the particle at time t, then the velocity Ẏt := dYt/dt is well-defined and finite everywhere. We assume that the external force (i.e. the derivative of the velocity) is a white noise, so...

We establish parity theorems for statistics on the symmetric group Sn, the derangements Dn, and the Catalan words Cn, giving both algebraic and bijective proofs. For the former, we evaluate q-generating functions at q = −1; for the latter, we define appropriate signreversing involutions. Most of the statistics involve counting inversions or finding the major index of various words.

In many detection applications, the signal to be detected, referred to as target signal, is not directly available. A reference channel (RC) is often deployed to collect a noisecontaminated version of the target signal to serve as a reference, which is then used to assist detecting the presence/absence of the target signal in a test channel (TC). A standard approach is to cross-correlate (CC) t...

Incremental Sigma-Delta (ISD) ADCs are becoming popular in the imaging field mainly due to 2 characteristics: the intrinsic oversampling of the converter which decreases the thermal noise of the pixel source follower and the reduced accuracy required by the analog building blocks. In this paper we present some design guidelines for choosing the appropriate ISD architecture according to the imag...

The author has developed a method of speaker identification,based on representation of speakers by some LPC-coded vowels.The minimum cumulated spectral difference between corresponding test and reference samples was the decision criterion in the recognition task.The experiments reported nere investigated the ability of the modified method to identify speakers under noise conditions.Tne modifica...