What if birdsong isn’t random?
Lucio Arese is mapping bird communication into structured data: → identifying repeating patterns → clustering signals → analyzing sequences over time
What humans hear as noise may contain real structure.
This is bigger than biology.
It’s a preview of what happens when AI meets signal processing: non-human communication becoming interpretable.
When sound becomes data, meaning can emerge.
#AI #Data #SignalProcessing #FutureOfAI

just learned from the Stanford Alumni Magazine that Bernard Widrow passed away last September... inventor of the least-mean-square filter, which despite the funny name (it sounds a lot like least squares, minimum residual, etc.) was one of the most important developments in late 20th century adaptive signal processing and digital control. a true pioneer of modern engineering!

https://en.wikipedia.org/wiki/Least_mean_squares_filter

#StanfordUniversity #LeastMeanSquare #LMS #signalProcessing #adaptiveFilter

Least mean squares filter - Wikipedia

How Passive Radar Works

Passive radar is radar that doesn't need a transmitter; it uses existing broadcasts of opportunity.

PassiveRadar.com
the European Association for Signal Processing has a public library of PhD theses: https://theses.eurasip.org/ #phdchat #signalprocessing
EURASIP – Library of Ph.D. theses

I've gone straight down the rabbit hole on an Analog TV simulation. This page has the details and links to the iOS app (free download): https://analogtv.ambor.com/#

#CRT #AnalogTV #RetroTech #iOSDev #SignalProcessing #NTSC #PAL #SECAM #IndieApp

Analog TV Simulator — Physics-accurate broadcast television for iOS

The complete analogue television chain — camera tube, composite signal, VCR tape, RF transmission, CRT phosphor — simulated from first principles. 8 phosphor types, Metal GPU, NTSC · PAL · SECAM. Free on iOS.

Analog TV Simulator

We are building out a new curriculum day for our #ComputationalNeuroscience course focused on time series analysis and #SignalProcessing. We're looking for 5-10 volunteer contributors w #CompNeuro & #DSP experience.

This is a #volunteer position. Learn more & apply: https://neuromatch.io/volunteer/

#Neuroscience #DataScience #OpenScience #volunteer #BuildYourCV

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I found a nice improvement to the Constant-Q Sliding DFT¹.

Using single precision calculation (32-bit float) generates some remanent noise because of the recursive nature of the algorithm: a running sum combined with complex rotations.

Replacing the complex multiply in eq. 3 for the twiddle factors (outer exponential) with the Martin Vicanek’s quadrature oscillator² helps a lot in the low frequencies. About 30 dB of improvement here, almost no extra CPU cost.

¹ A transform turning a PCM signal into a frequency spectrum. https://www.dafx.de/paper-archive/details.php?id=QMFQa1rIAM7mwu9tMIZAlg

² https://vicanek.de/articles/QuadOsc.pdf

#audio #DSP #SignalProcessing #CQSDFT #DFT #Spectrogram