输入wav文件次要格局在于文件头
WaveHeader header = new WaveHeader(sun);//sun为文件字节数//length field = size of the content (PCMSize) + size of the header field (excluding the first 4 bytes of the identifier RIFF and the fileLength itself 4 bytes)header.fileLength = sun + (44 - 8);header.FmtHdrLeth = 16;header.BitsPerSample = 16;header.Channels = 6;//通道数header.FormatTag = 0x0001;header.SamplesPerSec = 4000000; //采样率header.BlockAlign = (short)(header.Channels * header.BitsPerSample / 8);header.AvgBytesPerSec = header.BlockAlign * header.SamplesPerSec;header.DataHdrLeth = sun;byte[] h = header.getHeader();assert h.length == 44; //WAV standard, the header should be 44 bytes 去掉44就是pcm
其次输入多个通道数据数据格式
for(int i=0;i<bytes.length;i+2){ out.write(byte1,i,i+2);//1号通道 数据为2个字节数据 out.write(byte1,i,i+2);//2号通道 out.write(byte1,i,i+2);//3号通道}//顺次轮巡输入数据可造成多个通道为1个wav文件
多通道数据格式
单通道数据格式为
InputStream fis = new FileInputStream(src[0]);// Calculate the length byte[] buf = new byte[1024 * 4]; int size = fis.read(buf); int PCMSize = 0; while (size != -1) { PCMSize += size; size = fis.read(buf); } fis.close(); // Fill in the parameters, bit rate and so on. Here is the 16-bit mono 8000 hz WaveHeader header = new WaveHeader(PCMSize); //length field = size of the content (PCMSize) + size of the header field (excluding the first 4 bytes of the identifier RIFF and the fileLength itself 4 bytes) header.fileLength = PCMSize + (44 - 8); header.FmtHdrLeth = 16; header.BitsPerSample = 16; header.Channels = 1; header.FormatTag = 0x0001; header.SamplesPerSec = 4000000; //采样率 header.BlockAlign = (short)(header.Channels * header.BitsPerSample / 8); header.AvgBytesPerSec = header.BlockAlign * header.SamplesPerSec; header.DataHdrLeth = PCMSize; byte[] h = header.getHeader(); assert h.length == 44; //WAV standard, the header should be 44 bytes 去掉44就是pcm byte[] b = new byte[10]; FileOutputStream fs = new FileOutputStream(src[1]); fs.write(h); FileInputStream fiss = new FileInputStream(src[0]); byte[] bb = new byte[10]; int len = -1; while((len = fiss.read(bb))>0) { fs.write(bb, 0, len); } fs.close(); fiss.close();