In this paper the problem of the frequency estimation of a sinusoid embedded in white noise is considered. The approach used herein is the minimization of the sample variance of the output of constrained notch filters fed by the noisy sinusoid. In particular, this paper focuses on closed-form expressions of the frequency estimate, which can be obtained using notch filters having an all-zeros FI...

The multi-ripple filter is a new approach to model losses in digital waveguide synthesis. Stringed musical instruments produce decaying sounds due to physical losses, which need to be modeled. In digital waveguide string model, the losses are modeled with a loss filter. Another function for the loss filter is that it is needed to make the model stable. In piano synthesis, a high-order loss filt...

We distinguish between, and discuss the applicability of, two levels of rigidity in rigid-body collision modeling. For rigidity in the strong, force-response, sense collisional contact deformations must be highly localized. The bodies then move according to second order rigid-body mechanics during the collision. Incremental collision laws and most collision models using continuum mechanics for ...

The recursive algorithm for the impulse response coefficients of FIR filters with maximally flat specifications [4] was recently developed. Based on differential equation for the almost equiripple specifications [2] a similar recursion is derived and presented in this paper. Both backward recursions give an explicit access to the evaluation of asymptotic values to which the impulse response coe...

The possibility of the compensation of amplitude and phase errors of data acquisition channels is investigated. The complex passband error can be signiicantly reduced by an appropriate digital lter, as it is illustrated on the example of a dynamic signal analyzer. The aspects of IIR and FIR equalizers are studied: it turns out that for the given anti-aliasing lter (Cauer lter, order 11) an FIR ...

We present an optical waveguide technology for low-loss, compact and tunable planar integrated optical devices. Examples of devices realized in this technology include finite and infinite impulse response (FIR and IIR) filters and optical switches. © 1999 Optical Society of America OCIS codes: (130.3120) Integrated optics devices, (130.3130) Integrated optics materials

The advent of digital storage of audio signals and the availability of high-speed digital signal processing devices facilitate the implementation of high-order filter functions for loudspeaker equalization. A method is presented for generating a digital model of a loudspeaker system from which an efficient compensation filter using an IIR structure is derived. Application of this technique allo...

The paper describes a framework in the form of an optimization of a performance index subject to the constraints of a dynamic network, represented in the state space. The performance index is a measure of statistical dependence among the outputs of the network, namely, the relative entropy also known as the Kullback-Leibler divergence. The network is represented as (either discrete or continuou...

This paper describes deconvolution method for estimation of channel impulse response. Radio channels in radio system can be completely described by channel impulse response. We can investigate radio channel type from channel impulse response. In environment between transmitter and receiver there exist two main propragation components, Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS), which are ...

Finite-length delay-optimized multi-input multi-output (MIMO) equalizers that optimally shorten the impulse response memory of frequency-selective MIMO channels are derived. The MIMO equalizers are designed to minimize the average energy of the error sequence between the equalized MIMO channel impulse response and an MIMO target impulse response (TIR) with shorter memory. Two criteria for optim...