Linear interpolation filter

1. What is an interpolation filter?
2. What is linear interpolation smoothing?
3. What is linear interpolation method?
4. Is interpolation a low pass filter?

What is an interpolation filter?

The interpolation filter contains an L-fold expander followed by a lowpass FIR filter H(z). The L-fold expander inserts L−1 zeroes between consecutive samples to the original signal x(n) and changes the sampling frequency f_s of the original signal x(n) to a new sampling frequency Lf_s.

What is linear interpolation smoothing?

Linear interpolation (also known as Lerp) is a method to find unknown values between two known points. The unknown values are approximated through Linear interpolation by connecting these two known points with a straight line.

What is linear interpolation method?

Linear interpolation is a method of curve fitting using linear polynomials to construct new data points within the range of a discrete set of known data points. Formula of Linear Interpolation. y = y 1 + ( x − x 1 ) ( y 2 − y 1 ) x 2 − x 1.

Is interpolation a low pass filter?

Interpolation is a two step process: upsampling followed by low pass filtering.