sine topic
sectors-without-number
A random, revised edition compliant, stars without number sector generator
WaveView
:surfer: WaveView 一个水波纹动画控件视图，支持波纹数，波纹振幅，波纹颜色，渐变色，波纹速度，波纹方向等属性完全可配。
minfft
A small and fast Discrete Fourier Transform library
A-World-of-Circles
WWDC 2017 Scholarship Recipient. A Swift Playgrounds Book that visually teaches the relationship between sines and circles.
MD_AD9833
Library for using a AD9833 Programmable Waveform Generator hardware by Analog Devices.
drlut
Online DSP Lookup Table Generator. (AKA: Sine wave LUT calculator)
SineWave
Sine wave library for Arduino. Produces a sine signal and passes the output to a PWM pin.