1 /* 2 * Copyright 2019 Google LLC 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #ifndef ANDROID_FXLAB_ECHOEFFECT_H 17 #define ANDROID_FXLAB_ECHOEFFECT_H 18 19 #include "DelayLineEffect.h" 20 #include "utils/WhiteNoise.h" 21 22 23 template <class iter_type> 24 class EchoEffect: public DelayLineEffect<iter_type> { 25 public: EchoEffect(float feedback,float delay_ms)26 EchoEffect(float feedback, float delay_ms): 27 DelayLineEffect<iter_type> {1, 0, feedback, 28 static_cast<int>(delay_ms * SAMPLE_RATE / 1000), 29 0, 30 std::function<float()>{[](){return 0.0;}}} 31 {} 32 }; 33 #endif //ANDROID_FXLAB_ECHOEFFECT_H 34