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✨ signal: complete _filter_design, fix and improve _czt #378

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merged 2 commits into from
Dec 24, 2024
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✨ signal: complete _filter_design, fix and improve _czt #378

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ae75907
🩹 `signal`: fix and improve `czt` and `zoom_fft`
jorenham Dec 24, 2024
0faf861
✨ `signal`: complete `_filter_design`
jorenham Dec 24, 2024
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67 changes: 44 additions & 23 deletions scipy-stubs/signal/_czt.pyi
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Original file line number Diff line number Diff line change
@@ -1,55 +1,76 @@
from typing import TypeAlias
from typing import Any, Final, TypeAlias

import numpy as np
import optype as op
import optype.numpy as onp

__all__ = ["CZT", "ZoomFFT", "czt", "czt_points", "zoom_fft"]

_Float: TypeAlias = np.float64 | np.float32
_Complex: TypeAlias = np.complex128 | np.complex64
_Complex: TypeAlias = np.complex128 | np.clongdouble

###

# TODO: make generic on `_Complex`
class CZT:
def __init__(self, /, n: int, m: int | None = None, w: onp.ToComplex | None = None, a: onp.ToComplex = 1 + 0j) -> None: ...
w: Final[onp.ToComplex]
a: Final[onp.ToComplex]
m: Final[int | np.integer[Any]]
n: Final[int | np.integer[Any]]

def __init__(
self,
/,
n: onp.ToJustInt,
m: onp.ToJustInt | None = None,
w: onp.ToComplex | None = None,
a: onp.ToComplex = 1 + 0j,
) -> None: ...
def __call__(self, /, x: onp.ToComplexND, *, axis: int = -1) -> onp.ArrayND[_Complex]: ...
def points(self, /) -> onp.ArrayND[_Complex]: ...
def points(self, /) -> onp.Array1D[_Complex]: ...

class ZoomFFT(CZT):
w: complex
a: complex

m: int
n: int

f1: onp.ToFloat
f2: onp.ToFloat
fs: onp.ToFloat

def __init__(
self,
/,
n: int,
fn: onp.ToFloat | onp.ToFloatND,
m: int | None = None,
n: onp.ToJustInt,
fn: onp.ToFloat | onp.ToFloat1D,
m: onp.ToJustInt | None = None,
*,
fs: onp.ToFloat = 2,
endpoint: bool = False,
endpoint: onp.ToBool = False,
) -> None: ...

def czt_points(m: int, w: onp.ToComplex | None = None, a: onp.ToComplex = ...) -> onp.ArrayND[_Complex]: ...
#
def _validate_sizes(n: onp.ToJustInt, m: onp.ToJustInt | None) -> int | np.integer[Any]: ...

#
def czt_points(
m: onp.ToJustInt,
w: onp.ToComplex | None = None,
a: onp.ToComplex = 1 + 0j,
) -> onp.Array1D[_Complex]: ...

#
def czt(
x: onp.ToComplexND,
m: int | None = None,
m: onp.ToJustInt | None = None,
w: onp.ToComplex | None = None,
a: onp.ToComplex = 1 + 0j,
*,
axis: int = -1,
axis: op.CanIndex = -1,
) -> onp.ArrayND[_Complex]: ...

#
def zoom_fft(
x: onp.ToComplexND,
fn: onp.ToFloatND | onp.ToFloat,
m: int | None = None,
m: onp.ToJustInt | None = None,
*,
fs: int = 2,
endpoint: bool = False,
axis: int = -1,
) -> onp.ArrayND[_Float | _Complex]: ...
fs: onp.ToFloat = 2,
endpoint: onp.ToBool = False,
axis: op.CanIndex = -1,
) -> onp.ArrayND[_Complex]: ...
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