Aliasing - PowerPoint PPT Presentation


Interpolation and Pulse Shaping in Real-Time Digital Signal Processing

Discrete-to-continuous conversion, interpolation, pulse shaping techniques, and data conversion in real-time digital signal processing are discussed in this content. Topics include types of pulse shapes, sampling, continuous signal approximation, interpolation methods, and data conversion processes

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MRI Artifacts: Causes and Examples

MRI artifacts are signal misrepresentations that can be caused by various factors such as patient movement, magnetic field inhomogeneity, metallic objects, and under-sampling. Motion artifacts, magnetic susceptibility artifacts, and aliasing/wrap-around artifacts are common types of artifacts that c

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Interfacing with Analog Signals in Embedded Systems

Exploring the conversion of analog signals from the physical world into electrical signals using transducers in embedded systems. Learn about going from analog to digital representation, choosing sample rates, the Shannon-Nyquist sampling theorem, importance of anti-aliasing filters, and the necessi

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C Program Refinement Types with Liquid Types and Invariant Discovery

Discover the integration of Liquid Types and Refinement Types in C programming through Invariant Discovery, leading to automatically adapting C programs to fit Liquid Types. Explore challenges and solutions in expressing invariants, handling unknown aliasing, and implementing strong updates within t

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Introduction to Make Utility and Makefile in Software Engineering

Make utility is an automation tool for efficient program running and compiling. It requires a Makefile to define tasks. Benefits include aliasing commands, efficient compilation of changed files, and ease of operation. Installation may vary per system. Makefiles consist of rules with specific struct

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Modified Transmit Spectral Mask for IEEE P802.15 Working Group

This submission presents a modified transmit spectral mask for TG3e by Japan Radio Co., Ltd. The proposed mask aims to improve power efficiency without violating radio regulations. The motivation for the modification is to reduce unwanted aliasing and enhance SNR by employing a steep anti-aliasing s

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Dataflow Analysis in Program Optimization

Dataflow analysis is crucial for optimizing programs by identifying opportunities for improvements like constant propagation and dead code elimination. This analysis involves modeling values of interest, formulating fixpoint equations, and solving them to enhance program efficiency. Concepts such as

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Fourier Theory in Seismic Processing

Fourier theory plays a crucial role in seismic processing by helping to avoid temporal and spatial aliasing. It emphasizes the importance of sampling rates for accurate waveform reconstruction and highlights the significance of oversampling to prevent aliasing issues. Spatial aliasing is discussed i

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Multirate Systems and Filter Banks in Software Defined Radio PhD Program

Dive into the world of multirate systems and filter banks in a Software Defined Radio PhD Program focused on electrical engineering. Explore topics like interpolation, decimation, time and frequency multiplexing, and more. Discover how filter banks split and combine input signals, and learn about th

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Pixel Art

Pixel art is a unique form of digital art that harks back to the aesthetics of 8-bit and 16-bit computers and video game consoles. Created using software, pixel art involves editing images on a pixel level, often with a limited color palette. Techniques like dithering and anti-aliasing are common in

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Project Difficulty Scales

Difficulty scale of a project is essential for effective planning and preparation. This involves assessing the complexity levels using a scale ranging from very easy to research project or thesis level. Understanding this scale helps in gauging the effort and resources required for successful projec

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Digital Audio Processing with Python: The Discrete Fourier Transform

Aliasing occurs in digital audio processing when discrete sampled data leads to frequency ambiguity, losing information between samples. The Sampling Theorem states that a signal can be reconstructed from its samples taken at a rate provided that the signal contains frequencies less than the Nyquist

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Sampling Rate Conversion: Understanding the Fundamentals

Sampling rate conversion, as explained in J.D. Johnston's Factotum at An Audio Company, is crucial to maintaining signal integrity while changing sampling rates. Key concepts include avoiding aliasing, preserving baseband signals, and understanding the impact of downsampling and upsampling technique

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Overview of Pulse Modulation Techniques

The world of Pulse Modulation with a focus on Sampling theorem, Reconstruction theorem, Aliasing, and various Pulse Modulation Schemes like PAM, PWM, and PPM. Learn about Multiplexing Techniques such as FDM and TDM through informative visuals and explanations.

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Advanced Processing Strategies for Future GFZ-GRACE/GRACE-FO Data

This supplementary material discusses advanced processing strategies for the upcoming release of GFZ-GRACE/GRACE-FO Level-2 data, focusing on improving background models, stochastic modeling of ocean tide and non-tidal atmospheric and oceanic de-aliasing, sensor data analysis, and processing strateg

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Sampling Theorem in Signal Processing: Representation and Reconstruction

Learn about the Sampling Theorem in signal processing, which explains how bandlimited continuous-time signals can be represented as discrete-time signals without losing information. Understand signal reconstruction, interpolation, aliasing, and multirate signal processing concepts. Explore the Fouri

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Advanced Concepts in Sampling, Antialiasing, and Signal Processing

Explore the realms of sampling, antialiasing, Fourier transforms, convolution, filtering, aliasing, and more in the field of signal processing with detailed descriptions and images.

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Understanding Spectrum Analysis and Signal Reconstruction in Digital Signal Processing

Explore the concepts of spectrum analysis, signal sampling, aliasing, and signal reconstruction in digital signal processing. Learn about the Nyquist theorem, lowpass filters, and handling spectral distortion. Ideal for students and enthusiasts of signal processing.

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Understanding Aliasing and Antialiasing in Computer Graphics

Discover the visual artifacts of aliasing such as jagged lines, missed details, and strobing, and learn ways to fix aliasing through antialiasing techniques. Dive into sampling theory to understand signal reconstruction based on Shannon's theory.

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Linear Systems and Signals Fall 2024: Sampling and Reconstruction Lecture

Explore the fundamentals of signal processing in EE 313 with Prof. Brian L. Evans at The University of Texas at Austin. Learn about sampling, aliasing, reconstruction, and the Sampling Theorem using examples and illustrations from the course lectures.

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Understanding Signal Sampling and the Sampling Theorem

Explore the concepts of signal sampling, the Sampling Theorem, and spectral duplication in signal processing. Learn about Nyquist Theorem and the implications of aliasing in this comprehensive study.

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Understanding and Resolving Aliasing Issues in Digital Imaging

Explore the impact of aliasing on digital images, including visual artifacts like jagged lines and missed details. Learn how antialiasing techniques can help address these issues, along with insights into sampling theory and reconstruction limitations. Discover practical strategies for fixing aliasi

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Understanding Antialiasing in Computer Graphics

Explore the concepts of antialiasing and aliasing artifacts in computer graphics, including common techniques used in games such as SSAA, MSAA, MLAA, FXAA, and TAA. Discover how these methods blur high-frequency artifacts to enhance image quality and reduce aliasing effects caused by sampling. Dive

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Real-Time Digital Signal Processing Lab Spring 2025: Sampling and Aliasing

Explore the concepts of sampling, aliasing, and reconstruction in real-time digital signal processing. Learn about sampling theorems, frequency domain views, and the implications of aliasing on signal reconstruction. Discover techniques such as sample-and-hold reconstruction and ideal lowpass filter

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Intermediate Programming Concepts and Tools: Structs, Typedef, Type Casting, Pointer Casting

Explore intermediate programming concepts in C language including structs, typedef, type casting, and pointer casting. Learn about data types in C, type aliasing with typedef, converting between types, and managing pointers effectively. Dive into the world of C programming with practical examples an

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Advanced Techniques for Implementing Shadows in Game Graphics

Learn about Punctual Shadow Algorithms, Shadow Volumes, Shadow Rays, Shadow Maps, Shadow Acne & Shadow Bias, Shadow Resolution, and Shadow Aliasing. Explore different methods and challenges to enhance shadows in game graphics.

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Understanding Optimization in Computer Systems at Carnegie Mellon

Explore the world of computer system optimization at Carnegie Mellon University, covering topics such as code motion, procedure calls, memory aliasing, and optimizing compilers. Learn about the complexities and limitations of optimizing compilers and the importance of constant factors in program per

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Mastering Bit Reduction, Resampling, and Upsampling in Digital Audio Production

Dive into the world of digital audio production with a focus on bit reduction, resampling, and upsampling techniques. Learn about VST plugins, panning, and ear training for optimal sound processing. Explore the nuances of sampling analog sound waves, mastering digital sound resolutions, and understa

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GAMS Sets and Data Assignment Examples

Learn about simple sets, multiple names for a set, aliasing sets, multi-dimensional sets, assigning data for higher dimensions, and working with tables in GAMS. Explore logical and numerical relationship operators for advanced modeling.

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Understanding Aliasing and Antialiasing Techniques in Image Processing

Explore the concepts of aliasing and antialiasing in image processing, learn about the visual artifacts caused by aliasing, and discover techniques to reduce or eliminate these issues. Sampling theory, jagged lines, missed detail, and strobing effects are discussed to help you understand and address

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