/* * Copyright (C) 2010 The Android Open Source Project * * 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. */ #ifndef GENERATE_SINUSOID_H #define GENERATE_SINUSOID_H /* Return a sinusoid of frequency freq Hz and amplitude ampl in output of length numOutput. If ramp > 0.0, taper the ends of the signal with a half-raised-cosine function. It is up to the caller to delete[] output. If this call fails due to unreasonable arguments, numOutput will be zero, and output will be NULL. Note that the duration of the up/down ramps will be within the specified duration. Note that if amplitude is specified outside of the numerical range of int16, the signal will be clipped at +- 32767. */ void generateSinusoid(float freq, float duration, float sampleRate, float amplitude, float ramp, int* numOutput, short** output); #endif // GENERATE_SINUSOID_H