语音信号处理之（二）基音周期估计（Pitch Detection）-赢咖4注册

aihot 2017-04-27 08:03:28 OpenCV | 查看评论

/************* 读取并显示输入波部分启动 ***************/

int sampleRate;

int dataLength = wav2allsample(wavFile, data, sampleRate);

if (!dataLength)

{

cout <<"Reading wav file error!"<<endl;

return -1;

}

Mat originalWave;

wav2image(originalWave, data, 0, dataLength, 400);

line(originalWave, Point(0, originalWave.rows * 0.5), Point(originalWave.cols, originalWave.rows * 0.5), Scalar(0, 0, 255), 2);

imshow("originalWave", originalWave);

// 写入数据

writeFile<<"Filename: "<<wavFile<<endl<<"SampleRate: "<<sampleRate<<"Hz"<<endl<<"dataLength: "<<dataLength<<endl;

cout<<"Press space key to continue"<<endl;

while (waitKey(30) != ' ');

/************* 读取并显示输入波段结束 ***************/

/******** 计算能量来分离声音和声音部分开始*********/

int nodeCount = 0;

// 总和必须是双重类型

vector<double> energyTmp;

double maxEnergy(0);

while(nodeCount < (dataLength - nodesPerFrame))

{

double sum(0);

for (int i = nodeCount; i < (nodeCount + nodesPerFrame); i++)

{

sum += (double)data[i] * data[i];

}

if (sum > maxEnergy)

{

maxEnergy = sum;