/**

* @license

* Copyright 2019 Google LLC. 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.

* =============================================================================

*/

import {Tensor1D} from '../../tensor';

import {op} from '../operation';

import {cosineWindow} from '../signal_ops_util';

/**

* Generate a Hann window.

*

* See: https://en.wikipedia.org/wiki/Window_function#Hann_and_Hamming_windows

*

* ```js

* tf.signal.hannWindow(10).print();

* ```

* @param The length of window

*

* @doc {heading: 'Operations', subheading: 'Signal', namespace: 'signal'}

*/

function hannWindow_(windowLength: number): Tensor1D {

return cosineWindow(windowLength, 0.5, 0.5);

}

export const hannWindow = /* @__PURE__ */ op({hannWindow_});