a-kgeorge

29 ms·

1. 1.▲
   by a-kgeorge 5mo ago

   This is fantastic. I love how it makes Earth’s rotation feel immediate and visceral with zero equipment. The controls and overlays are really well thought out. It would be cool to have a search box to jump to a specific star or coordinate,
2. 2.▲
   Show HN: Dspx – Native C++ DSP Library for Node.js Built for AWS Lambda (1.3MB)

   2 points by a-kgeorge 7mo ago|0 comments
3. 3.▲
   by a-kgeorge 11mo ago

   Who It’s For • Node backends running streaming DSP • Systems needing stateful pipelines + fault tolerance • Teams avoiding separate Python/C++ services • IoT gateways w/ intermittent workloads Not ideal: • Browser-only DSP (use We
4. 4.▲
   by a-kgeorge 11mo ago

   Code Example: const pipeline = await createDspPipeline({ redisHost: "localhost", redisPort: 6379, stateKey: "dsp:user:ch1", }); pipeline .filter({type:"butterworth",mode:"bandpass",lowCutoffFr
5. 5.▲
   by a-kgeorge 11mo ago

   DSP Primitives: • STFT, Mel-spectrogram, MFCC • FIR/IIR (Butterworth, Chebyshev, Parks-McClellan) • Time + FFT convolution • Decimation, resampling, rectification • Hilbert transform, wavelet decomposition Infrastructure • Multi-channe
6. 6.▲
   by a-kgeorge 11mo ago

   I built dspx after hitting a wall with real-time EMG processing in Node.js. Problem: 2 kHz × 8 channels → filters → decimation → FFT. JS is too slow; the Python sidecar is complex; WASM lacks native threading. Solution: Native C++ DSP wit
7. 7.▲
   Show HN: dspx — Serverless-friendly DSP for Node.js (native C++ + Redis state)(github.com)

   4 points by a-kgeorge 11mo ago|4 comments