Agenda - Lightweight job scheduling for Node.js

•    Javascript

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A light-weight job scheduling library for Node.js.

cron scheduler job-scheduler crontab cronjob recurring job queue task runner automated frequency interval jobs delayed job-queue task-queue

OpenPMU

•    

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OpenPMU is a platform for the research, development and education of Synchrophasor technology.

frequency openpdc openpmu phase-angle phasor pmu sensor

Open Source SynchroPhasor PMU

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The GridTrak Open Source SynchroPhasor PMU Project provides resources that enable you to build your own SynchroPhasor sensor for use with the openPDC project, research, development, or electric grid observation.

frequency gridtrak gtospmu open-source-pmu openpdc openpg

clubber - Application of music theory in audio reactive visualizations

•    Javascript

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This small js library listens to audio sources and extracts the underlying rhythmic information. The linear frequency energies are converted into midi notes which music theory suggests to be a better segregation for music audio. A set of meaningful measurements are produced in a form suitable for direct use in webgl shaders, or any other context. This simple flow provides a powerful framework for the rapid development of awesome audio reactive visualisations.

clubber midi audio reactive web-audio music webgl frequency notes band threshold octave shadertoy dancer analysis kick bass key note vector shader analyzer analyser rhythm visualisation

term-frequency - A simple term frequency library (see https://en

•    Javascript

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A simple term frequency lib

term frequency tf-idf

analyser-frequency-average - gets an average intensity between two frequency ranges

•    Javascript

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For the given WebAudio AnalyserNode, determine the average signal (0 .. 1) between two frequency ranges in Hz. This can be useful for audio visualization on a certain spectrum of the frequency graph.The frequency is assumed to be in byte data, though you can use the floatData entry point to get around this.

freq range frequency audio detection beat visualizer freqs frequencies

monster-drift - 📻🏎 Drive a radio controlled car with Node.js and HackRF

•    Javascript

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📻🏎 Drive a radio controlled car with Node.js and HackRF. This module should work with most radio controlled cars operating on a frequency of 27MHz.Simply run the monster-drift command to start. Use --help to get help.

hackrf rf radio freq frequency car race racing 27 27mhz remote control controlled

spectrum - a small tool to visualize the frequencies of an audio file

•    Javascript

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A small web app that shows the frequencies in real-time of a MP3/OGG file. Modelled after Ableton Live's Spectrum effect.MIT, see LICENSE.md for details.

frequency frequencies graph

sillyscope - oscilloscope and spectrogram that reads from stdin

•    Javascript

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you will get a live scanning spectroscope in a chromeless chrome window.Only supports 32-bit float input right now.

oscilloscope fft spectroscope frequency

frequency-viewer - plot frequencies in the browser from raw data

•    Javascript

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Create a new frequency scope.You can set the baud rate with opts.rate, default: 44000.

oscilloscope scope frequency fft ndarray ui visualization

note-parser - Parse notes with javascript

•    Javascript

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Parse music notes in scientific notation

note parse parser midi scientific notation frequency

frequency-counter - Count the number of occurrences of a repeating event per unit of time

•    Javascript

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Count the number of occurrences of a repeating event per unit of time. Initialize the frequency counter. Optionally set a custom window size in seconds over which the frequency should be calcuated (default: 60).

freq frequency freqency calculate calc stat stats rpm

audio-notes - Note frequencies for equal-tempered scale

•    Javascript

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Provides note frequencies for equal-tempered scale. Available on NPM.

audio notes frequencies note frequency

count-min-sketch - Count-Min Sketch Data Structure

•    Javascript

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An implementation of Coromode and Muthukrishnan's Count-Min sketch data structure for JavaScript. The count-min sketch is basically a high powered generalization of the bloom filter. While a bloom filter gives an efficient way to approximate membership of a set, a count-min sketch can give approximate data about the relative frequency of items in the set. Creates a count-min sketch data structure.

count-min count min increment frequency probabilistic random bloom filter heavy hitter sparse stream algorithm

detect-pitch - Detects the pitch of an audio snippet

•    Javascript

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Detects the pitch of a signal using the autocorrelation method. Detects the pitch of signal by computing the period by autocorrelation.

pitch frequency detection audio processing

abacus - Counter Data structure for Golang using CountMin Sketch with a fixed amount of memory

•    Go

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Abacus let you count item frequencies in big datasets with a fixed amount of memory. Unlike a regular counter it trades off accuracy for memory. This is useful for particular tasks, for example in NLP/ML related tasks you might want to count millions of items however approximate counts are good enough.

count minsketch counter cm frequency word probabilistic

kanji-frequency - Kanji usage frequency data collected from various sources

•    Javascript

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Kanji usage frequency data collected from various sources

kanji data japanese japanese-language data-visualization kanji-frequency frequency-lists corpus corpus-linguistics cjk cjk-characters frequency charts

libwxfreq - libwxfreq is a generic high performance frequency limitation library

•    C++

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libwxfreq is a generic high performance frequency limitation library

frequency

react-slider-kit - react-slider-kit is going to be a comprehensive solution to slider feature in react

•    Javascript

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react-slider-kit is going to be a comprehensive solution to slider feature in react. This component was originally inspired by dribble concept design The Range Slider Component. React-Slider-Kit is bundled as a combination of multiple components, and by default the single slider is imported.

react slider range range-slider price frequency kit react-slider-kit react-rangeslider react-input-range sliderkit slider-kit react-slider rangeslider input price-range 2d chart

HandySwift - Handy Swift features that didn't make it into the Swift standard library.

•    Swift

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The goal of this library is to provide handy features that didn't make it to the Swift standard library (yet) due to many different reasons. Those could be that the Swift community wants to keep the standard library clean and manageable or simply hasn't finished discussion on a specific feature yet. If you like this, please also checkout HandyUIKit for handy UI features that we feel should have been part of the UIKit frameworks in the first place.

sortedarray delay random extension sample frequency