This text describes the implementation of Ambisonics as user defined opcodes (UDOs) for Csound. The presented package of UDOs includes a basic encoder and a decoder up to 8th order, an encoder with distance correction, an in-phase decoder, opcodes for the two-dimensional equivalent of Ambisonics for any order, opcodes for Ambisonics equivalent panning (AEP) and several utilities such as coordin...

In learning deep generative models, the encoder for variational inference is typically formed in an ad hoc manner with a structure and parametrization analogous to the forward model. Our chief insight is that this results in coarse approximations to the posterior, and that the d-separation properties of the BN structure of the forward model should be used, in a principled way, to produce ones t...

For a networked control system, we consider the problem of encoder and controller design. We study a discrete-time linear plant with a finite horizon performance cost, comprising of a quadratic function of the states and controls, and an additive communication cost. We study separation in design of the encoder and controller, along with related closed-loop properties such as the dual effect and...

-Viterbi decoder is a basic and important block in any Code Division Multiple Access (CDMA) and CDMA uses Convolutional encoder to prevent Interference. Convolutional encoding and Viterbi decoding are widely used in various communication systems because of their excellent error control performance. This paper deals with the implementation of Convolutional encoding and Viterbi decoding using SOP...

This paper describes a methodology for top-down design, modeling, and simulation of complete π/4 DQPSK system using hardware description language VHDL-AMS. Two system implementations are considered: with and without Viterbi encoder/decoder. VHDL-AMS implementations of various RF blocks (e.g. a realistic channel model) are developed, the system is simulated, and bit error rate is evaluated in th...

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Motivated by the potential to reuse the architecture in place for an analog sum-product decoder, and thus reduce circuit space, we show how an analog encoder may be constructed for a class of reversible LDPC codes. We review the basic building blocks of analog decoder design for subthreshold CMOS circuits and then show how these components may be reused for encoding. We present an encoder circu...

INTRODUCTION Displacement measurement is an essential technique in the field of precision metrology and precision manufacturing. The linear encoder is the most popular displacement sensor for measurement of the position of a moving stage along the axis of motion. Many commercially available linear encoders, whose principles are based on interference and diffraction, can achieve nanometer-level ...

A full-rank IC x n matrix G ( D ) over the rational functions F ( D ) generates a rate R = k / n convolutional code C. G ( D ) is minimal if it can be realized with as few memory elements as any encoder for C, and G ( D ) is canonical if it has a minimal realization in controller canonical form. We show that G ( D ) is minimal if and only if for all rational input sequences p1 ( D ) , the span ...