Exemple #1
0
Fichier : mfcc.c Projet : imace/nnt
/** @function
********************************************************************************
<PRE>
函数名: voiceToMFCC()
功能: 得到语音的MFCC参数组
用法:
参数:
[IN] pRawVoice: 原始语音数据
[IN] iSampleNum: 语音样本数
[OUT] MFCC: 指向存放MFCC参数组的指针,大小为MFCC[帧数][20]
[IN] train_frame_num: 训练帧帧数
返回:
TRUE: 成功提取
FALSE: 提取失败
调用: PreEmphasis(), JudgeTrainFrame(), FrameMultiHamming(), FrameToMFCC()
主调函数:
备注: 提供给外层的接口
</PRE>
*******************************************************************************/
BOOL voiceToMFCC(BYTE * pRawVoice, int iSampleNum, double ** MFCC, int train_frame_num)
{
    double * pDiffVoice = NULL;
    double * pDiff = NULL;
    VOICEFRAME * pVoiceFrame = NULL; // 指向可用的训练帧


    //pDiffVoice = (double *)malloc(iSampleNum * sizeof(double));
	pDiffVoice = (double *)calloc(iSampleNum, sizeof(double));
	if (!pDiffVoice)
	{
		xprint("pDiffVoice");
		return FALSE;
	}
    PreEmphasis(pRawVoice, iSampleNum, pDiffVoice);    // 预增强
    pDiff = JudgeTrainFrame2(pDiffVoice, iSampleNum, train_frame_num);
    if (!pDiff)    // 判断静寂语音
    {
		//xprint("Error: It`s silent voice!");
        free(pDiffVoice);
        return FALSE;
    }

	pVoiceFrame = (VOICEFRAME *)malloc(train_frame_num * sizeof(VOICEFRAME));
    FrameMultiHamming(pDiff, pVoiceFrame, train_frame_num);  // 得到频域帧
    free(pDiff);
    FrameToMFCC(pVoiceFrame, MFCC, train_frame_num); // 从帧得到MFCC参数组

	free(pVoiceFrame);
    free(pDiffVoice);
    return TRUE;
}
Exemple #2
0
/** @function
********************************************************************************
<PRE>
函数名: voiceToMFCC()
功能: 得到语音的MFCC参数组
用法:
参数:
[IN] pRawVoice: 原始语音数据
[IN] iSampleNum: 语音样本数
[OUT] MFCC: 指向存放MFCC参数组的数组指针,大小为MFCC[帧数][20]
返回:
TRUE: 成功提取
FALSE: 提取失败
调用: PreEmphasis(), JudgeTrainFrame(), FrameMultiHamming(), FrameToMFCC()
主调函数:
备注: 提供给外层的接口
</PRE>
*******************************************************************************/
BOOL voiceToMFCC(BYTE * pRawVoice, int iSampleNum, double MFCC[GOOD_FRAME_NUM][D])
{
    double * pDiffVoice = NULL;
    double * pDiff = NULL;
    VOICEFRAME pVoiceFrame[GOOD_FRAME_NUM] = {{NULL}};    //指向可用的训练帧


    pDiffVoice = (double *)malloc(iSampleNum * sizeof(double));
	if (!pDiffVoice)
	{
		return FALSE;
	}
    PreEmphasis(pRawVoice, iSampleNum, pDiffVoice);    //预增强
    pDiff = JudgeTrainFrame2(pDiffVoice, iSampleNum);
    //pDiff = pDiffVoice;
    if (!pDiff)    //判断静寂语音
    {
#ifdef _DEBUG
		printf("Error: It`s silent voice!\n");
#endif // _DEBUG
        free(pDiffVoice);
        return FALSE;
    }

    FrameMultiHamming(pDiff, pVoiceFrame);  //得到频域帧
    free(pDiff);
    FrameToMFCC(pVoiceFrame, MFCC);   //从帧得到MFCC参数组

    free(pDiffVoice);
    return TRUE;
}