| andrew@webrtc.org | 325cff0 | 2014-10-01 17:42:18 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
| Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 11 | #include "common_audio/window_generator.h" |
| andrew@webrtc.org | 325cff0 | 2014-10-01 17:42:18 +0000 | [diff] [blame] | 12 | |
| 13 | #include <cstring> |
| 14 | |
| Mirko Bonadei | 92ea95e | 2017-09-15 06:47:31 +0200 | [diff] [blame] | 15 | #include "test/gtest.h" |
| andrew@webrtc.org | 325cff0 | 2014-10-01 17:42:18 +0000 | [diff] [blame] | 16 | |
| 17 | namespace webrtc { |
| 18 | |
| 19 | TEST(WindowGeneratorTest, KaiserBesselDerived) { |
| 20 | float window[7]; |
| 21 | |
| 22 | memset(window, 0, sizeof(window)); |
| 23 | |
| 24 | WindowGenerator::KaiserBesselDerived(0.397856f, 2, window); |
| 25 | ASSERT_NEAR(window[0], 0.707106f, 1e-6f); |
| 26 | ASSERT_NEAR(window[1], 0.707106f, 1e-6f); |
| 27 | ASSERT_NEAR(window[2], 0.0f, 1e-6f); |
| 28 | ASSERT_NEAR(window[3], 0.0f, 1e-6f); |
| 29 | ASSERT_NEAR(window[4], 0.0f, 1e-6f); |
| 30 | ASSERT_NEAR(window[5], 0.0f, 1e-6f); |
| 31 | ASSERT_NEAR(window[6], 0.0f, 1e-6f); |
| 32 | |
| 33 | WindowGenerator::KaiserBesselDerived(0.397856f, 3, window); |
| 34 | ASSERT_NEAR(window[0], 0.598066f, 1e-6f); |
| 35 | ASSERT_NEAR(window[1], 0.922358f, 1e-6f); |
| 36 | ASSERT_NEAR(window[2], 0.598066f, 1e-6f); |
| 37 | ASSERT_NEAR(window[3], 0.0f, 1e-6f); |
| 38 | ASSERT_NEAR(window[4], 0.0f, 1e-6f); |
| 39 | ASSERT_NEAR(window[5], 0.0f, 1e-6f); |
| 40 | ASSERT_NEAR(window[6], 0.0f, 1e-6f); |
| 41 | |
| 42 | WindowGenerator::KaiserBesselDerived(0.397856f, 6, window); |
| 43 | ASSERT_NEAR(window[0], 0.458495038865344f, 1e-6f); |
| 44 | ASSERT_NEAR(window[1], 0.707106781186548f, 1e-6f); |
| 45 | ASSERT_NEAR(window[2], 0.888696967101760f, 1e-6f); |
| 46 | ASSERT_NEAR(window[3], 0.888696967101760f, 1e-6f); |
| 47 | ASSERT_NEAR(window[4], 0.707106781186548f, 1e-6f); |
| 48 | ASSERT_NEAR(window[5], 0.458495038865344f, 1e-6f); |
| 49 | ASSERT_NEAR(window[6], 0.0f, 1e-6f); |
| 50 | } |
| 51 | |
| 52 | TEST(WindowGeneratorTest, Hanning) { |
| 53 | float window[7]; |
| 54 | |
| 55 | memset(window, 0, sizeof(window)); |
| 56 | |
| 57 | window[0] = -1.0f; |
| 58 | window[1] = -1.0f; |
| 59 | WindowGenerator::Hanning(2, window); |
| 60 | ASSERT_NEAR(window[0], 0.0f, 1e-6f); |
| 61 | ASSERT_NEAR(window[1], 0.0f, 1e-6f); |
| 62 | ASSERT_NEAR(window[2], 0.0f, 1e-6f); |
| 63 | ASSERT_NEAR(window[3], 0.0f, 1e-6f); |
| 64 | ASSERT_NEAR(window[4], 0.0f, 1e-6f); |
| 65 | ASSERT_NEAR(window[5], 0.0f, 1e-6f); |
| 66 | ASSERT_NEAR(window[6], 0.0f, 1e-6f); |
| 67 | |
| 68 | window[0] = -1.0f; |
| 69 | window[2] = -1.0f; |
| 70 | WindowGenerator::Hanning(3, window); |
| 71 | ASSERT_NEAR(window[0], 0.0f, 1e-6f); |
| 72 | ASSERT_NEAR(window[1], 1.0f, 1e-6f); |
| 73 | ASSERT_NEAR(window[2], 0.0f, 1e-6f); |
| 74 | ASSERT_NEAR(window[3], 0.0f, 1e-6f); |
| 75 | ASSERT_NEAR(window[4], 0.0f, 1e-6f); |
| 76 | ASSERT_NEAR(window[5], 0.0f, 1e-6f); |
| 77 | ASSERT_NEAR(window[6], 0.0f, 1e-6f); |
| 78 | |
| 79 | window[0] = -1.0f; |
| 80 | window[5] = -1.0f; |
| 81 | WindowGenerator::Hanning(6, window); |
| 82 | ASSERT_NEAR(window[0], 0.0f, 1e-6f); |
| 83 | ASSERT_NEAR(window[1], 0.345491f, 1e-6f); |
| 84 | ASSERT_NEAR(window[2], 0.904508f, 1e-6f); |
| 85 | ASSERT_NEAR(window[3], 0.904508f, 1e-6f); |
| 86 | ASSERT_NEAR(window[4], 0.345491f, 1e-6f); |
| 87 | ASSERT_NEAR(window[5], 0.0f, 1e-6f); |
| 88 | ASSERT_NEAR(window[6], 0.0f, 1e-6f); |
| 89 | } |
| 90 | |
| 91 | } // namespace webrtc |