Conventional TA modulators suffer from idle tones. In order to alleviate the tone problem, TA modulators with unstable filter dynamics have been proposed. In this paper we present an analysis of the saturation characteristics and tone behavior of the double loop EA modulator with unstable filter dynamics. We begin by deriving stability boundaries for the double loop EA modulator with unstable f...

Magnetic tape recordings suffer from nonlinear distortions, mainly due to saturation effects. We model the audio signals using a linear Autoregressive (AR) model with additive Gaussian noise and the recording procedure with a nonlinear measurement function. To analyze the nonlinearities we perform measurements on magnetic tape devices in saturation. Due to ferromagnetic effects a nonlinearity w...

This paper presents a statistical analysis of the least mean square (LMS) algorithm with a zero-memory scaled error function nonlinearity following the adaptive filter output. This structure models saturation effects in active noise and active vibration control systems when the acoustic transducers are driven by large amplitude signals. The problem is first defined as a nonlinear signal estimat...

The cigarette package is, in many markets, the primary means of marketing and advertising cigarette brands to consumers. While some countries have moved to implement plain packaging, most continue to allow product differentiation on the basis of packaging. Colour is often used to communicate implicit messages about taste, risk and quality, and evidence suggests that package colours are specific...

We discuss the ‘continuity correction’ that should be applied to relate the prices of discretely sampled barrier options and their continuouslysampled equivalents. Using a matched asymptotic expansions approach we show that the correction of Broadie, Glasserman & Kou (Mathematical Finance 7, 325 (1997)) can be applied in a very wide variety of cases. We calculate the correction to higher order ...

We discuss the ‘continuity correction’ that should be applied to connect the prices of discretely sampled American put options (i.e. Bermudan options) and their continuously-sampled equivalents. Using a matched asymptotic expansions approach we compute the correction and relate it to that discussed by Broadie, Glasserman & Kou (Mathematical Finance 7, 325 (1997)) for barrier options. In the Ber...

In previous work, the authors presented a generalized parametric model of a pressure controlled valve, allowing the user to design a continuum of reed configurations, including “blown open”, “blown closed” and the “swinging door”. Though the generalized reed model behaved as expected, the quality of the produced sound was somewhat limited, likely due to the dependence of reed oscillation on the...

in order to obtain maximum information from magnetic and gravity anomaly maps, application of an edgedetection method is necessary. in this regard two commonly used methods are derivative filters and local phase filters. in this paper, a matlab code is expanded to combine an analytic signal filter and a tilt angle filter as a new edge detection filter called asta filter. this method was demonst...