@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
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JavaScript
/**
* @license
* Copyright 2020 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 * as tf from '../../index';
import { ALL_ENVS, describeWithFlags } from '../../jasmine_util';
import { expectArraysClose } from '../../test_util';
describeWithFlags('hannWindow', ALL_ENVS, () => {
it('length=3', async () => {
const ret = tf.signal.hannWindow(3);
expectArraysClose(await ret.data(), [0, 1, 0]);
});
it('length=7', async () => {
const ret = tf.signal.hannWindow(7);
expectArraysClose(await ret.data(), [0, 0.25, 0.75, 1, 0.75, 0.25, 0]);
});
it('length=6', async () => {
const ret = tf.signal.hannWindow(6);
expectArraysClose(await ret.data(), [0., 0.25, 0.75, 1., 0.75, 0.25]);
});
it('length=20', async () => {
const ret = tf.signal.hannWindow(20);
expectArraysClose(await ret.data(), [
0., 0.02447176, 0.09549153, 0.20610738, 0.34549153,
0.5, 0.65450853, 0.79389274, 0.9045085, 0.97552824,
1., 0.97552824, 0.9045085, 0.7938925, 0.65450835,
0.5, 0.34549144, 0.20610726, 0.09549153, 0.02447173
]);
});
});
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