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SSagunsagunwrites.hashnode.dev4d ago · 5 min read

Super Harvard Architecture

Computer architecture has continuously evolved to improve performance. The Von Neumann Architecture introduced the stored-program concept. Harvard Architecture separated instruction and data memory. B

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Mmayaanderssonllmasajudge.hashnode.devJun 19 · 4 min read

I benchmarked 6 prompt-optimization frameworks on the same task. Here is what each one actually optimizes.

TL;DR: I ran six prompt-optimization frameworks against the same task and the same eval metric over a few weeks. They are not interchangeable: some are full programming models, some are single search

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RGRaphael Guintolimartechgtm.hashnode.devMay 19 · 2 min read

Scaling to $1M+: The Technical Architecture of a High-Velocity TTD Pipeline

Managing a $1,000,000+ programmatic budget on The Trade Desk (TTD) transitions your job from media buying to data infrastructure engineering. At this velocity, manually tracking budgets is impossible.

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JKJeongeun Kimpowerelecsw.hashnode.devMay 1 · 5 min read

State Variable Filter: One Biquad Structure, Three Simultaneous Outputs

Transfer Function The State Variable Filter (SVF) implements three simultaneous outputs — lowpass (LP), highpass (HP), and bandpass (BP) — from a single shared pole structure. All three biquads share

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JKJeongeun Kimpowerelecsw.hashnode.devApr 26 · 6 min read

Butterworth Lowpass 4th Order: 80 dB/Decade Rolloff With Zero Passband Ripple

A 2nd-order Butterworth gives you 40 dB/decade. Double the order to fourth and you get 80 dB/decade — the same maximally flat passband, twice the stopband suppression. At fc = 1000 Hz with fs = 44100

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JKJeongeun Kimpowerelecsw.hashnode.devApr 26 · 7 min read

FIR Lowpass Kaiser Window: Linear-Phase Precision for Control Signal Filtering

Every IIR lowpass filter we have covered — Butterworth, Chebyshev, Elliptic — achieves steep rolloff at the cost of nonlinear phase, meaning different frequency components are delayed by different amo

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JKJeongeun Kimpowerelecsw.hashnode.devApr 26 · 7 min read

High Shelf Biquad: Boost High Frequencies Without Distorting Your Control Bandwidth

Every sensor signal chain has a frequency-dependent noise floor. Below the shelf frequency the signal is clean; above it, quantization noise, switching harmonics, or electromagnetic interference domin

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JKJeongeun Kimpowerelecsw.hashnode.devApr 22 · 6 min read

Low Shelf Biquad: DC-Range Gain Shaping Without Integrator Wind-Up

A pure integrator (pole at z = 1) delivers infinite DC gain and infinite wind-up risk. A low shelf biquad gives you the same low-frequency gain boost with a defined upper limit, no saturation algebra

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JKJeongeun Kimpowerelecsw.hashnode.devApr 22 · 6 min read

Allpass Filter 2nd Order: Pure Phase Shift Without Touching the Magnitude Spectrum

Every filter you've used so far in this series attenuates some frequencies. The allpass filter does something different: it leaves the magnitude spectrum completely untouched — 0 dB gain at every freq

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JKJeongeun Kimpowerelecsw.hashnode.devApr 18 · 5 min read

Elliptic Lowpass 2nd Order: Maximum Stopband Attenuation at Minimum Filter Order

Elliptic (Cauer) filters achieve the steepest possible transition from passband to stopband for a given filter order. They pay for this with equiripple in both passband and stopband — but when embedde

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Trending tags this week

Super Harvard Architecture

I benchmarked 6 prompt-optimization frameworks on the same task. Here is what each one actually optimizes.

Scaling to $1M+: The Technical Architecture of a High-Velocity TTD Pipeline

State Variable Filter: One Biquad Structure, Three Simultaneous Outputs

Butterworth Lowpass 4th Order: 80 dB/Decade Rolloff With Zero Passband Ripple

FIR Lowpass Kaiser Window: Linear-Phase Precision for Control Signal Filtering

High Shelf Biquad: Boost High Frequencies Without Distorting Your Control Bandwidth

Low Shelf Biquad: DC-Range Gain Shaping Without Integrator Wind-Up

Allpass Filter 2nd Order: Pure Phase Shift Without Touching the Magnitude Spectrum

Elliptic Lowpass 2nd Order: Maximum Stopband Attenuation at Minimum Filter Order