By Rudolf F. Graf
Diagrams and describes the fundamental circuits utilized in alarms, switches, voltmeters, battery chargers, modulators, receivers, transmitters, oscillators, amplifiers, converters, pulse turbines, and box energy meters.
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Extra info for Encyclopedia of Electronic Circuits Volume I
2 extends the known model of multihypothesis motion-compensated prediction. Correlated displacement error for superimposed prediction are discussed and the concept of motion compensation with complementary hypotheses is introduced. Further, we discuss the gradient of the prediction error variance for superimposed motion-compensated signals and the impact of a particular frame signal model. 3 analyzes “noisy” hypotheses, investigates both averaging and Wiener filtering, and provides performance results for jointly estimated hypotheses.
8 omits “noisy” signal components. A superimposed motion-compensated predictor forms a prediction signal by averaging N hypotheses in order to predict the current frame signal s[l]. 28) where is the vector valued frequency. 1) is given by the power spectrum of the current frame and the cross spectra of the hypotheses where denotes the real component of the, in general, complex valued cross spectral densities We adopt the expressions for the cross spectra from , where the displacement errors are interpreted as random variables which are statistically independent from s: Like in , we assume a power spectrum that corresponds to an exponentially decaying isotropic autocorrelation function with a correlation coefficient For the with variance displacement error a 2-D stationary normal distribution and zero mean is assumed where the x- and y-components 38 Video Coding with Superimposed Motion-Compensated Signals are statistically independent.
8 depicts the rate difference for motion compensation with complementary hypotheses and Wiener filter over the displacement inaccuracy and negligible residual noise. 5 bits per sample and the slope reaches up to 2 bits per sample per inaccuracy step. e. 42 supports the observation in Fig. 5 bits per sample. Consequently, the prediction error variance of the optimal noiseless superimposed predictor with Wiener filter converges to zero for an infinite number of hypotheses. Fig. 9 shows the rate difference for motion compensation with complementary hypotheses and Wiener filter over the displacement inaccuracy at a Motion-Compensated Prediction with Complementary Hypotheses 53 residual noise level of -30 dB.