C输出Wav文件没有产生任何声音

我试图创建一个C代码，产生10秒的C音符。但它似乎输出.wav文件没有产生任何声音。C输出Wav文件没有产生任何声音

我还是新的C编程，这将是有益的，如果你能指出我的错误。

#include <stdio.h> 
#include <math.h> 
#include <stdlib.h> 
#include <string.h> 
#include <unistd.h> 

//music note 
#define C 261.6256 

#define TIME 10 
#define POINT 20 
#define AMP 10000 
#define c 5 

//wav file header 
typedef struct 
{ 
    char ChuckID[4]; 
    unsigned long ChuckSize; 
    char format[4]; 
    char subChunk1ID[4]; 
    unsigned long SubChunk1Size; 
    unsigned short AudioFormat; 
    unsigned short NumChannels; 
    unsigned long SampleRate; 
    unsigned long ByteRate; 
    unsigned short block_allign; 
    unsigned short bits_per_sample; 
    char data[4]; 
    unsigned long data_size; 

    /*char riff_tag[4]; 
    int  riff_length; 
    char wave_tag[4]; 
    char fmt_tag[4]; 
    int  fmt_length; 
    short audio_format; 
    short num_channels; 
    int  sample_rate; 
    int  byte_rate; 
    short block_align; 
    short bits_per_sample; 
    char data_tag[4]; 
    int  data_length;*/ 
} wavheader; 

int main(int argc, char **argv) 
{ 
    wavheader wave = {"RIFF",1764036,"WAVE","fmt",16,1,1,44100,176400,4,32,"data",1764000}; 

    float data; 
    float f = C; 
    int fs = 44100; 
    int k; 
    float *buff; 

    FILE *out_file = fopen("ongaku.wav","w"); 
    buff = (float*)malloc(sizeof(float)*fs*TIME); 

    for (k = 0; k<(int)(TIME*fs); k++) 
    { 
     data=AMP*sin(2*M_PI*f*k/fs); 
     //printf("%f\n",data); 
    } 

    fwrite(buff,sizeof(float),fs*TIME,out_file); 

    return 0; 
}

来源

2014-12-26 ヲヲヲ

您还没有向文件或任何数据写入“buff”。 –

我有这个工作的8位数据，但不成功，12位/ 16位更不用说float数据。有一两件事是重要的，是不是在头硬编码的缓冲区大小。其他需要注意的字节序（我碰巧不是需要调整），以及结构包装（同上）。 12位数据时，我的BPS/8使用也将来到脱胶。

#include <stdio.h> 
#include <math.h> 
#include <stdlib.h> 

#define FREQ 261.6256 // C 
//#define FREQ 440.0  // A 
#define M_PI 3.14159265358979323846 
#define TIME 10 
#define AMP  64.0  // don't use max volume 
#define MID  128.0  // 8-bit is range 0..255 
//#define MID 0.0   // 16-bit is range -32767.. 32767 
#define BPS  8 
#define CHANNS 1 
#define RATE 44100 

//wav file header 
typedef struct { 
    char ChuckID[4]; 
    unsigned long ChuckSize; 
    char format[4]; 
    char subChunk1ID[4]; 
    unsigned long SubChunk1Size; 
    unsigned short AudioFormat; 
    unsigned short NumChannels; 
    unsigned long SampleRate; 
    unsigned long ByteRate; 
    unsigned short block_allign; 
    unsigned short bits_per_sample; 
    char data[4]; 
    unsigned long data_size; 
} wavheader; 

int main(int argc, char **argv) 
{ 
    int k, samples = RATE * TIME; 
    double data; 
    FILE *out_file; 
    unsigned char *buff; 
    wavheader wave = { 
     "RIFF", 
     36 + samples * CHANNS * BPS/8, 
     "WAVE", 
     "fmt ",   // "fmt" was error in OP 
     16, 
     1, 
     CHANNS, 
     RATE, 
     RATE * CHANNS * BPS/8, 
     CHANNS * BPS/8, 
     BPS, 
     "data", 
     samples * CHANNS * BPS/8 
     }; 

    buff = malloc(BPS/8 * samples); 
    out_file = fopen("ongaku.wav","w"); 
    fwrite(&wave, sizeof(wave), 1, out_file); 
    for (k=0; k<samples; k++) { 
     data = MID + AMP * sin(2 * M_PI * FREQ * TIME * k/(double)samples); 
     buff[k] = (unsigned char)floor(data+0.5); 
    } 
    fwrite(buff, BPS/8, samples, out_file); 
    fclose (out_file); 
    free (buff); 
    return 0; 
}

来源

2014-12-26 14:46:28

谢谢...我的工作：d –

@Kamilin感谢。我发现使用最大幅度创造了令人不快的声音。对不起，我不知道为什么我不能让16位工作。 –

把一些数据放入buff，我猜你的数据变量是保存该值。而后，如果一切正常，使用

fflush(out_file);

或使用

fclose(out_file);

来源

2014-12-26 12:33:31 Codeek

C输出Wav文件没有产生任何声音

回答

相关问题