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Structs

struct WindowTypes

Traits: AnyType, UnknownDestructibility

Functions

(Functions that are not associated with a Struct)

fn bessel_i0

Calculate the modified Bessel function of the first kind, order 0 (I₀). Uses polynomial approximation for accurate results.

Signature

bessel_i0(x: Float64) -> Float64

Arguments

Name Type Default Description
x Float64 — Input value

Returns

Type: Float64

fn kaiser_window

Create a Kaiser window of length n with shape parameter beta.

Signature

kaiser_window(size: Int64, beta: Float64) -> List[Float64]

Arguments

Name Type Default Description
size Int64 — —
beta Float64 — Shape parameter that controls the trade-off between main lobe width and side lobe level
- beta = 0: rectangular window
- beta = 5: similar to Hamming window
- beta = 6: similar to Hanning window
- beta = 8.6: similar to Blackman window

Returns

Type: List DynamicVector[Float64] containing the Kaiser window coefficients

fn build_sinc_table

Build a sinc function lookup table.

Signature

build_sinc_table(size: Int64, ripples: Int64 = 4) -> List[Float64]

Arguments

Name Type Default Description
size Int64 — Number of points in the table
ripples Int64 4 Number of ripples/lobes on each side of the main lobe

Returns

Type: List List containing the sinc function values

fn hann_window

Generate a Hann window of length n.

Signature

hann_window(n: Int64) -> List[Float64]

Arguments

Name Type Default Description
n Int64 — Length of the window

Returns

Type: List

fn hamming_window

Generate a Hamming window of length n.

Signature

hamming_window(n: Int64) -> List[Float64]

Arguments

Name Type Default Description
n Int64 — —

Returns

Type: List

fn blackman_window

Generate a Blackman window of length n. Args: n: Length of the window Returns: List containing the Blackman window values

Signature

blackman_window(n: Int64) -> List[Float64]

Arguments

Name Type Default Description
n Int64 — —

Returns

Type: List

fn sine_window

Generate a Sine window of length n. Args: n: Length of the window Returns: List containing the Sine window values

Signature

sine_window(n: Int64) -> List[Float64]

Arguments

Name Type Default Description
n Int64 — —

Returns

Type: List

fn pan_window

Generate a SIMD[DType.float64, 2] quarter cosine window for panning. value 0 is for the left channel, value 1 is for the right channel. 0 = cos(0) = 1.0 (full left) 1 = cos(pi/2) = 0.0 (no left)

Signature

pan_window(size: Int64) -> List[SIMD[DType.float64, 2]]

Arguments

Name Type Default Description
size Int64 — Length of the window

Returns

Type: List

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