Digital Signal Processing Mitra

Beryl Plugin is the new, professional level, digital image processing plugin for Adobe Photoshop and Elements. Leveraging DataMind's proprietary state-of-the-art algorithms, Beryl is a Photoshop plugin that automatically removes the red-eye effect from digital photos. With a focus on...

This is a crude attempt at quasi-realtime signal processing using the PC sound card as an analogue data acquisition device. The cardiogram signal is generated by a Polar heart rate monitor strap and transmitted wirelessly to a receiver connect to the PC microphone. See here for the physical...

The function implement the 2D dyadic(Paley) ordered fast in-place Walsh-Hadamard transform, which can be used in signal processing, pattern recognition and Genetic alogorithms. This algorithm uses a Cooley-Tukey type signal flow graph and is implemented in N log2 Nadditions and subtractions. Data...


Platforms: Matlab

A fast implementation of particle filter dedicaced to multitarget tracking with bearing only measurements. For the multitarget data association problem, a gibbsampler is used to estimate target association probabilities.Ref : "Sequential Monte-Carlo methods for multple target tracking and data...


Platforms: Matlab

Lab 4a:The primary goal of the first lab is to familiarize you with using Simulink so that in the next lab you can use Simulink to program a DSP. Here are three specific goals for this lab:d-deD? Learn basic Simulink commands and syntax, including the help system.d-deD? Learn to write and edit...


Platforms: Matlab

Until recently, Base station antennas have been omnidirectional or sectored. This can be regarded as a waste of power as most of it will be radiated in other directions than toward the user. In addition, the power radiated in other directions will be experienced as interference by other...


Platforms: Matlab

NOTE: Though I have uploaded this toolbox, I have no contribution in this work. Programming and research in this field has been done by students given belowKapil Gulati, Marcel Nassar, Aditya Chopra, Marcus DeYoung, Arvind Sujeeth, and Navid Aghasadeghi.It is composed of various functions used to...


Platforms: Matlab

RF Blockset converts frequency domain RF information to a baseband-complex time-domain model, for fast execution and compatibility with Simulink signal processing and communications blocks.This simple model illustrates some relationships inherent in the conversion...* Length of impulse response =...


Platforms: Matlab

If applied to a matrix, the function FILTFILT (Signal Processing Toolbox) calls itself recursively for each column. Internally FILTER is called twice, but this can be performed with a matrix directly to avoid the unnecessary overhead. For a [100 x 100] matrix FILTFILT is about 10 times faster...


Platforms: Matlab

The AudioDevice blocks that ship with Signal Processing Blockset utilize the PortAudio library to communicate with the audio hardware. Although the PortAudio library supports a range of APId-deOaos designed to communicate with the audio hardware on a given platform, the following choices were...


Platforms: Matlab

Let us assume the signal model:Y(k)=HX(k)+B(k)This script provides a method for the blind recognition of the number of sources (the size of X(k)). The noise must be spatially white and the number of receivers is assumed to be stricly greater than the number of sources. See reference [CHE91] Chen....


Platforms: Matlab

Let us assume the following MIMO model:Y(k)=HX(k)+Y(k)This file can detect the number of sources, i.e the size of the vector X(k) from the received signal Y(k). The noise is assumed spatially white and the number of receivers must be strictly greater than the number of sources. See Reference...


Platforms: Matlab

Includes webinar slides as a PDF file together with a MATLAB script and a Simulink model to demonstrate filter design, implementation and HDL code generation capabilities with MATLAB, Simulink and featured toolboxes


Platforms: Matlab

Digital signal generator (sumulator) with power spectrum display and sliders for "real time" control, useful for teaching and demonstrating the power spectra of different types of signals and the effect of signal duration and sampling rate. Version 1.1 adds sound output. The signal slider selects...


Platforms: Matlab

With improvements in signal processing some new models with enhanced features are made available.TVAR is on similar pattern.This model is better than conventional am-fm model in some respect as it facilates the implementation of same algo on various signals bearing different parameters. Use of...


Platforms: Matlab

In many practical signal processing problems, the objective is to estimate from measurements a set of constant parameters upon which the received signals depend.For example, high-resolution direction-of-arrival (DOA) estimation is important in many sensor systems such as radar, sonar, electronic...


Platforms: Matlab

Non Convex Optimization Algorithms for Group SparsitySolves a dummy OFDM sparse channel estimation problemReweighted Lm,p algorithm for noiseless case min||x||_m,p s.t. y = AxReweighted Lm,p algorithm for noisy case min||x||_2,p s.t. ||y - Ax||_qSmoothed L2,0 algorithm solves a smooth version...


Platforms: Matlab

The NCG is a good statistic for block based watermarking which uses geometric warping. The NCG-strength (given by Lx and Ly) enables the estimation of the robustness of the NCG - x,y-cordinates to lossy compression. A higher strength yields a higher robustness. To embedd watermark bits the NCG -...


Platforms: Matlab

This script calculates BER for a numebr of SNR values in gaussian environment for QAM 16 Modulation.It calculates 100 errors for each BER measuremnet for better results.I hope this will be helpful for students of signal processing and communications alike.


Platforms: Matlab

This block for Simulink provides a chirp source for stimulating unknown system dynamics. The block has been developed specifically for the purpose of system identification, however it should be of interest to anyone looking for a robust and flexible chirp function. The chirp function is modelled...


Platforms: Matlab