SP - Sinebell Apodization (nmrPipe function)

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Overview

Sine-bell apodization used in nmrPipe is defined i-th point as follows:

$f(i) = \sin\left( \frac{\pi \cdot off + \pi \cdot (off-end) \cdot i}{tSize-1} \right)^{pow}$

where value of $o f f$ corresponds to value of -off parameter, $e n d$ - to -end parameter, $p o w$ - to -pow parameter. $t S i z e$ is automatically read from the data file (it's header). Meanings of parameters are described below.

Parameters

parameter	type and range of values	meaning
-off	real number, $\in [0,1]$	starting offset if sine bell in units of $π$
-end	real number, $\in (-off,1]$	ending offset if sine bell in units of $π$
-pow	real number, $\in (-\infty,\infty)$ , but typical values are 1.0 and 2.0	exponent of the apodization function
-c,-start,-size,-one,-hdr,-inv	extra parameters that apply to all available window functions; -c is the most frequently used one