@uppy/utils/lib/emaFilter.d.ts

Shared utility functions for Uppy Core and plugins maintained by the Uppy team.

/**
 * Low-pass filter using Exponential Moving Averages (aka exponential smoothing)
 * Filters a sequence of values by updating the mixing the previous output value
 * with the new input using the exponential window function
 *
 * @param newValue the n-th value of the sequence
 * @param previousSmoothedValue the exponential average of the first n-1 values
 * @param halfLife value of `dt` to move the smoothed value halfway between `previousFilteredValue` and `newValue`
 * @param dt time elapsed between adding the (n-1)th and the n-th values
 * @returns the exponential average of the first n values
 */
export default function emaFilter(newValue: number, previousSmoothedValue: number, halfLife: number, dt: number): number;
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