SDR.FilterDesign

Filter design and plotting of frequency responses.

Sinc Function

sinc

Arguments

:: (Floating n, Vector v n)

=> Int

The length. Must be odd.

-> n

The cutoff frequency (from 0 to 1)

-> v n

Compute a sinc function

Windows

hanning

Arguments

:: (Floating n, Vector v n)

=> Int

The length of the window

-> v n

Compute a Hanning window.

hamming

Arguments

:: (Floating n, Vector v n)

=> Int

The length of the window

-> v n

Compute a Hamming window.

blackman

Arguments

:: (Floating n, Vector v n)

=> Int

The length of the window

-> v n

Compute a Blackman window.

Convenience Functions

windowedSinc

Arguments

:: (Floating n, Vector v n)

=> Int

The length

-> n

The cutoff frequency (from 0 to 1)

-> (Int -> v n)

The window function

-> v n

Frequency Response Plot

plotFrequency

Arguments

:: [Double]

The filter coefficients

-> IO ()

Given filter coefficients, plot their frequency response and save the graph as "frequency_response.png".