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Blog

Careers in Signal Processing?

May 26, 2017 by 3200 Creative

by Barry Van Veen I am often asked, "What do careers in signal processing involve?"  My answer is, "Almost anything." Signal processing has invaded  every aspect of our daily lives.  Medical diagnostics and treatment, transportation, weather forecasting, environmental monitoring, and personal electronics, e.g., cell phones, are a few of the everyday places we use signal processing.  The […]

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Aliasing in Movies: Levitating Helicopters and Wheels Rotating Contrary to Motion

April 3, 2017 by 3200 Creative

by Barry Van Veen Movies consist of individual images that are recorded or played back at a certain rate. Thus each pixel in the movie is sampled.  A common frame rate for movies is 30 frames per second, which means that each pixel is sampled at 30 Hz. This is sufficiently fast that humans do […]

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Learn Better: Science Shows You How to Succeed

September 25, 2016 by 3200 Creative

Barry Van Veen The fields of neuroscience and cognitive psychology have now established very clear understandings of effective study habits.  It turns out that widely used, passive techniques like highlighting and rereading a text (or re-watching a lecture video) are actually counterproductive.  They may increase your familiarity, but do not improve your ability to apply […]

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Concussion and AllSignalProcessing

January 18, 2016 by 3200 Creative

signal processing instruction Barry Van Veen

This post is not about the recent movie on brain damage discovered  in (American) football players by Dr. Bennet Omalu.  It is about my own recent journey. I rarely share personal information over the internet. However, I want to give those of you who follow AllSignalProcessing.com some context for my reduced level of activity on the site over the past […]

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Aliasing of Signals - Identity Theft in the Frequency Domain

April 25, 2015 by 3200 Creative

Aliasing of signals in Egmont Overture spectrogram

  by Barry Van Veen Earlier this year someone filed an income tax return using my identity. The topic of this blog post is aliasing, not tax fraud, although the concepts are similar. Aliasing in signal processing is when a sinusoid of one frequency takes on the appearance or identity of a different frequency sinusoid. […]

Filed Under: Blog, How to Use

Estimation of the Amplitude and Phase of Sinusoids in Noise

January 21, 2015 by 3200 Creative

Estimation of the Amplitude and Phase of Sinusoids

  by Barry Van Veen In the previous post we developed a method for estimating the amplitude and phase of sinusoids from data samples assuming the frequencies are known.  This method applies to sinusoids with arbitrary frequencies.  The approach we used to develop the estimator was to convert the amplitude and phase of each sinusoid into […]

Filed Under: Blog

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