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48 lines
1.5 KiB
48 lines
1.5 KiB
/*
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* Copyright 2010 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.levien.synthesizer.core.model.modules;
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import com.levien.synthesizer.core.model.FrequencyProvider;
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import com.levien.synthesizer.core.model.SignalProvider;
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import com.levien.synthesizer.core.model.SynthesisTime;
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/**
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* Module to modify the output of a frequency provider.
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*/
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public class Tuner implements FrequencyProvider {
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/**
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* Creates a Tuner module to wrap source.
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* @param input - The base log frequency.
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* @param shift - The amount to alter it.
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*/
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public Tuner(FrequencyProvider input, SignalProvider shift) {
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input_ = input;
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shift_ = shift;
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}
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public double getLogFrequency(SynthesisTime time) {
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double input = input_.getLogFrequency(time);
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double shift = shift_.getValue(time);
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return input + shift;
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}
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// The wrapped frequency provider to take as input.
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private FrequencyProvider input_;
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// The amount to alter the signal.
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private SignalProvider shift_;
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}
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