Category Archives: Math

Amplitude Modulation Principles and Interactive Widget video

Posted on October 29, 2020 by Nigel Redmon

This video demonstrates important uses of AM—and serves as a demonstration of using the AM widget.

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Amplitude Modulation Deep and Fast video

Posted on October 29, 2020 by Nigel Redmon

Here’s Amplitude Modulation Deep and Fast, a not too lengthy video that gets to the roots of what amplitude modulation does mathematically. I’ve referred to AM’s role in sampling theory in past articles, and its relatively simple math makes understanding … Continue reading →

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AM widget

Posted on October 2, 2020 by Nigel Redmon
Posted in Amplitude Modulation, Widgets | Leave a comment

Floating point denormals

Posted on April 19, 2019 by Nigel Redmon

There’s another issue with floating point hardware that can easily cause serious performance problems in DSP code. Fortunately, it’s also easy to guard against if you understand the issue. I covered this topic a few years ago in A note … Continue reading →

Posted in Math | 10 Comments

Floating point caveats

Posted on April 19, 2019 by Nigel Redmon

The equivalent of “When I was your age, we use to walk to school in the snow. Barefoot”, in DSP, is to say we used to do DSP in fixed point math. The fixed-point system could be made of integer … Continue reading →

Posted in Math | 9 Comments