sinusoid
/ˈsʌɪnəsɔɪd
/noun
1 another term for sine curve.The Fourier transform decomposes or separates a waveform or function into sinusoids of different frequency which sum to the original waveform....
- Most transient signals, which are exponentially damped sinusoids, cannot be wavelet basis functions because of their nonzero mean.
- A digital tone generator produced a pure tone sinusoid, and the intensity envelope was visually adjusted to fit the envelope of a representative call of the population.
2 Anatomy A small irregularly shaped blood vessel found in certain organs, especially the liver.One patient had sickle cell anemia and showed sickled red blood cells in the dilated sinusoids....
- In the liver, larvae move freely in the sinusoids.
- Occasionally, the spindle cells invaded the sinusoids, replacing the normal endothelium.
Derivatives
sinusoidal
- Many standard curves occur as sinusoidal spirals.
- Visual observations of hair bundle motion showed sinusoidal or nearly sinusoidal motion.
- If you're not familiar with the Fourier transform, its purpose is to decompose a function into sinusoidal basis functions.
sinusoidally
- Modulating the current density periodically with a pseudo-sine wave generates the sinusoidally varying porosity gradient that creates the rugate filter.
- Seven subjects walked on a programmable treadmill both at constant and oscillating speeds, set to sinusoidally change between the two limits in 3 seconds.
- The light can be pulsed, sinusoidally modulated, or unmodulated, depending on the requirements for speed, cost, and resolution.
Origin
Early 19th century: from French sinusoïde, from Latin sinus (see sinus).