You can do this with OpenAL.
You will need to create an array containing PCM encoded data that represents the desired result, and then call alBufferData () on your array with the desired frequency and sample format. See page 21 OpenAL Developer's Guide for the format required by alBufferData ().
For example, the following code reproduces a 100 Hz tone.
#include <iostream> #include <cmath> #include <al.h> #include <alc.h> #include <AL/alut.h> #pragma comment(lib, "OpenAL32.lib") #pragma comment(lib, "alut.lib") int main(int argc, char** argv) { alutInit(&argc, argv); alGetError(); ALuint buffer; alGenBuffers(1, &buffer); { // Creating a buffer that hold about 1.5 seconds of audio data. char data[32 * 1024]; for (int i = 0; i < 32 * 1024; ++i) { // get a value in the interval [0, 1) over the length of a second float intervalPerSecond = static_cast<float>(i % 22050) / 22050.0f; // increase the frequency to 100hz float intervalPerHundreth = fmod(intervalPerSecond * 100.0f, 1.0f); // translate to the interval [0, 2PI) float x = intervalPerHundreth * 2 * 3.14159f; // and then convert back to the interval [0, 255] for our amplitude data. data[i] = static_cast<char>((sin(x) + 1.0f) / 2.0f * 255.0f); } alBufferData(buffer, AL_FORMAT_MONO8, data, 32 * 1024, 22050); } ALuint source; alGenSources(1, &source); alSourcei(source, AL_BUFFER, buffer); alSourcePlay(source); system("pause"); alSourceStop(source); alDeleteSources(1, &source); alDeleteBuffers(1, &buffer); alutExit(); return 0; }