Tootfinder

Hz

Heute morgen gegen 10:42 Ortszeit (09:42 CET) kam es in der #Ukraine und #Moldau nach einer technischen Störung zu großflächigen Stromausfällen. Da die Länder zum Europäischen Verbundnetz gehören, waren die Auswirkungen auch bei uns sichtbar. Durch die plötzlich fehlende Last gab es ein Übe…

Continuing in the process of measuring the speed of my turntable in the oddest way; here is the FFT before and after oiling & replacing it's belt. Hmm, it's clearly a bit fast before and a bit slow after; it's not got any speed adjustment mechanism, it's a belt on an AC driven motor.
This FFT and plot was done using #labplot using the waveforms gathered by

Is there a name for a number representation system where you store an exponent for an entire dataset, then a mantissa for each value?
So you might have e.g. units=Hz, scale factor=1e6, values=A....Z (measured in MHz)

Neue Apple-Monitore: Studio Display 2 und Studio Display XDR
Apple hat seine Monitore vereinheitlicht. 120 Hz gibt es aber nur beim teuren, plötzlich kleineren XDR-Modell – mit 5K statt 6K-Auflösung.
https://www…

Chronic 40 Hz light flicker mitigates epileptogenesis through a visual pathway associated with the dorsal lateral geniculate nucleus shell (in epileptic mice) https://www.nature.com/articles/s41467-025-64269-2

Chronic 40 Hz light flicker mitigates epileptogenesis through a visual pathway associated with the dorsal lateral geniculate nucleus shell - Nature Communications
Whether and how gamma entrainment using sensory stimuli (GENUS) has a role in antiepileptogenesis is not fully understood. Here authors show that GENUS reduces seizure susceptibility in male mice. These effects are mediated via specific visual neural pathway.

This looks like a potential money maker for marketing to #boomers. I am one myself, and #dementia is my number one fear. Just gin up a little gizmo that generates a 40 Hz tone that I can plug into my hearing aids, or generic ear buds. Who cares if it works, you’ll make millions overnight.

Listening to this sound could help reverse Alzheimer’s | BBC Science Focus Magazine
The research is in its early stages but offers “encouraging” evidence of a potential treatment for Alzheimer’s

Nvidia brings its G-Sync Pulsar tech to four monitors, which reduces motion blur by using a "rolling scan" scheme that briefly pulses the monitors' backlight (Kyle Orland/Ars Technica)
https://arstechnica.com/gaming/2026/01

Nvidia’s new G-Sync Pulsar monitors target motion blur at the human retina level
Four new monitors promise "effective motion clarity of a theoretical 1,000 Hz monitor."

Two things:
1. Gran Turismo 7 on PS5 Pro with 120 Hz output on, PSSR off, and a wired controller (set to communicate over USB in system settings) is a sublime input latency best case scenario
2. Seems I played ~800 hours of GT7 without knowing how to brake properly 🥴 (too much E-brake, for one)

Sadly, my old off-brand, 32", 1080p, 60 Hz TV set slowly fritzed before my eyes after 9 years and 7 months of continuous service. Good game.
Even more depressing, for the last week of tedious browsing, I can't seem to settle on another dirt-cheap ~€300, non-32", non-Sony, non-Samsung, 4K, at-least-a-solid-60Hz TV set that I am confident would not die on me or would not run out of smart software support within the next three years.

Experimental Validation of HomHBFEM Simulations of Fast Corrector Magnets for PETRA IV
Jan-Magnus Christmann, Laura Anna Maria D'Angelo, Herbert De Gersem, Sven Pfeiffer, Sajjad Hussain Mirza, Adeel Amjad, Lucas Rousselange, Matthias Thede
https://arxiv.org/abs/2602.14824 https://arxiv.org/pdf/2602.14824 https://arxiv.org/html/2602.14824
arXiv:2602.14824v1 Announce Type: new
Abstract: This paper presents experimental validation of the homogenized harmonic balance finite element method (HomHBFEM), which we have developed as a dedicated simulation technique for magnets with fast excitation cycles, in particular the fast corrector (FC) magnets for PETRA IV at DESY. The HomHBFEM allows efficient three-dimensional nonlinear eddy-current simulations of laminated magnets at elevated frequencies with a relatively coarse finite element (FE) mesh and without computationally expensive time-stepping. This is achieved by combining a frequency-domain-based homogenization technique with the harmonic balance FE method. The simulation results for the magnetic flux density along the axis of the FC magnets as a function of frequency and the resulting integrated transfer function (ITF) are compared to Hall probe and search coil measurements of the first prototype FC magnet for PETRA IV. A good agreement between simulated and measured ITFs is achieved for excitation frequencies from 10 Hz to 10 kHz.
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#Upcoming “Sol.Hz” by #Seefeel is their first full-length album in fifteen years. A hazy and blissed out collection of fractured melodies and vaporous textures. Available via Warp Records, May 1st. …

Frequency-Dependent Magnetic modulation of deposition morphology
S. K. Saroj, P. K. Panigrahi
https://arxiv.org/abs/2602.21789 https://arxiv.org/pdf/2602.21789 https://arxiv.org/html/2602.21789
arXiv:2602.21789v1 Announce Type: new
Abstract: This paper presents a novel approach for magnetic modulation of deposition morphology in an evaporating ferrofluid droplet. The magnetic field strength and ferrofluid concentration are kept unchanged, while the actuation frequencies are varied from 0.016 Hz to 5 Hz. In the absence of a magnetic field, a coffee-ring formation is observed and consistent with previous studies\cite{deegan1997capillary,deegan2000contact,saroj2019drying}. The application of a time-dependent magnetic field significantly modifies the deposition morphology. The periodic magnetic field induces the formation of multiple concentric rings during evaporation. The number of rings initially increases with increasing actuation frequency of the electromagnet. However, beyond a critical actuation frequency ($f_c = 0.2\,\text{Hz}$), the number of rings decreases. At higher actuation frequencies, magnetic particles preferentially deposit in the central region of the droplet, resulting in suppression of the coffee-ring effect. Additionally, the thickness of the inner rings and the ring spacing decrease with increasing actuation frequency up to critical actuation frequency. The transition from multi-ring formation to coffee-ring suppression is governed by the competition among magnetic forcing, capillary flow, and particle diffusion. The underlying physical mechanisms responsible for droplet dynamics and deposition morphology under periodic magnetic fields are evaluated using scaling arguments. The results demonstrate that diffusive particle transport plays a dominant role in determining the deposition pattern. A non-dimensional magnetic switching number, based on the magnetic perturbation timescale, is introduced as a control parameter to characterize the frequency-dependent deposition behavior.
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As promised: quick demo of ngscopeclient running CDR eye pattern on >800 Msps (2x 50M points @ 8.2 Hz) of live streaming waveform data on an RTX 2080 Ti.
https://www.youtube.com/watch?v=r6uPpITsyhQ

Cannot believe how responsive Gran Turismo 7 feels to play with a DualSense controller connected via USB cable and 120 Hz mode enabled with VRR. At least for my reflexes and TV, it allows for much tighter maneuvering. #PlayStation5 #GranTurismo7

I'm going to have to screen record this, I can't believe I got it working this well.
2x 50M point differential Ethernet waveform into subtract filter, CDR, and eye pattern.
Refreshing at 8.3 Hz. With just a little bit more optimization or faster hardware this will be real time.
Then I can start working on getting protocol decodes to run at full rate too.

High-bandwidth frequency domain multiplexed readout of transition-edge sensors for neutrinoless double beta decay searches
M. Adami\v{c} (McGill,LBNL), M. Beretta (UCB,INFN), J. Camilleri (LBNL,Virginia Tech), C. Capelli (LBNL,Zurich U.), M. A. Dobbs (McGill), T. Elleflot (LBNL), B. K. Fujikawa (LBNL), Yu. G. Kolomensky (LBNL,UCB), D. Mayer (MIT), J. Montgomery (McGill), V. Novosad (ANL), A. M. Sindhwad (UCB), V. Singh (UCB), G. Smecher (t0.technology), A. Suzuki (LBNL), B. Welliver (UCB)
https://arxiv.org/abs/2601.23106 https://arxiv.org/pdf/2601.23106 https://arxiv.org/html/2601.23106
arXiv:2601.23106v1 Announce Type: new
Abstract: The next-generation of cryogenic neutrinoless double-beta decay experiments require increasingly fast readout in order to improve background discrimination. These experiments, operated as cryogenic calorimeters at $\sim$10 mK, are usually read out by high-impedance neutron transmutation doped (NTD) thermistors, which provide good energy resolution, but are limited by $\sim$1 ms response times. Superconducting detectors, such as transition-edge sensors (TESs) with a time resolution of $\sim$100 $\mu$s, offer superior timing performance over NTD semiconductor bolometers. To make this technology viable for an application to a thousand or more channels, multiplexed readout is necessary in order to minimize the thermal load and radioactive contamination induced by the readout. Frequency-domain multiplexing readout (fMux) for TESs, previously developed at Berkeley Lab and McGill University, is currently in use for mm-wave telescopes with detector sampling rates in the order of 100 Hz. We demonstrate a new readout system, based on the McGill/Berkeley digital fMux readout, to satisfy the higher bandwidth and noise requirements of the next generation of TES-instrumented cryogenic calorimeters. The new readout samples detectors at 156 kHz, three orders of magnitude faster than its cosmology-oriented predecessor. Each multiplexing readout module comprises ten superconducting resonators in the MHz range and a superconducting quantum interference device (SQUID), interfaced to high-bandwidth field programmable gate array (FPGA)-based electronics for digital signal processing and low-latency feedback.
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Experimental credit based flow control in TS.NET plus ngscopeclient for reduced buffer bloat and much better performance over LANs.
This is 2x 50M points (100M points per trigger) updating at around 8.3-8.5 Hz over 10/40GbE.
The TS.NET side of this isn't merged and there's still some bugs to chase but it's looking *really* good.

There's still room to tune - shallow memory throughput is definitely suboptimal due to latency issues I need to chase - but with deep memory ngscopeclient ThunderScope is getting some pretty impressive performance.
2 channels @ 50M point memory depth (100M points per trigger) streaming at 7.5 WFM/s over LAN from across the building through a router. 40Gbase-SR4 from client to core switch and from core switch to router, then back to core switch, then 10Gbase-SR to the machine host…