[audio] rm kaiser window in audio get_window function && rm audio utils (#47469)

* rm kaiser window in audio window function

* rm paddle audio utils which is redundant

* rm kaiser in test_audio_functions.py

python/paddle/audio/functional/window.py

@@ -231,16 +231,6 @@ def _tukey(
     return _truncate(w, needs_trunc)
 
 
-@window_function_register.register()
-def _kaiser(
-    M: int, beta: float, sym: bool = True, dtype: str = 'float64'
-) -> Tensor:
-    """Compute a Kaiser window.
-    The Kaiser window is a taper formed by using a Bessel function.
-    """
-    raise NotImplementedError()
-
-
 @window_function_register.register()
 def _gaussian(
     M: int, std: float, sym: bool = True, dtype: str = 'float64'
@@ -346,7 +336,7 @@ def get_window(
     """Return a window of a given length and type.
 
     Args:
-        window (Union[str, Tuple[str, float]]): The window function applied to the signal before the Fourier transform. Supported window functions: 'hamming', 'hann', 'kaiser', 'gaussian', 'general_gaussian', 'exponential', 'triang', 'bohman', 'blackman', 'cosine', 'tukey', 'taylor'.
+        window (Union[str, Tuple[str, float]]): The window function applied to the signal before the Fourier transform. Supported window functions: 'hamming', 'hann', 'gaussian', 'general_gaussian', 'exponential', 'triang', 'bohman', 'blackman', 'cosine', 'tukey', 'taylor'.
         win_length (int): Number of samples.
         fftbins (bool, optional): If True, create a "periodic" window. Otherwise, create a "symmetric" window, for use in filter design. Defaults to True.
         dtype (str, optional): The data type of the return window. Defaults to 'float64'.
@@ -363,7 +353,7 @@ def get_window(
             cosine_window = paddle.audio.functional.get_window('cosine', n_fft)
 
             std = 7
-            gussian_window = paddle.audio.functional.get_window(('gaussian',std), n_fft)
+            gaussian_window = paddle.audio.functional.get_window(('gaussian',std), n_fft)
     """
     sym = not fftbins
 

python/paddle/audio/utils/__init__.py

-# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License"
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.

python/paddle/audio/utils/error.py

-# Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-__all__ = ['ParameterError']
-
-
-class ParameterError(Exception):
-    """Exception class for Parameter checking"""
-
-    pass

python/paddle/tests/test_audio_functions.py

@@ -178,13 +178,6 @@ class TestAudioFuncitons(unittest.TestCase):
         np.testing.assert_array_almost_equal(
             window_scipy_exp, window_paddle_exp.numpy(), decimal=5
         )
-        try:
-            window_paddle = paddle.audio.functional.get_window(
-                ("kaiser", 1.0), self.n_fft
-            )
-        except NotImplementedError:
-            pass
-
         try:
             window_paddle = paddle.audio.functional.get_window("hann", -1)
         except ValueError: