下载对应的jar包网址:http://www.sauronsoftware.it/projects/jave/download.php JAVE 1.0.2即可
代码如下:
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class PcmToWav {
public static void testPcmWav() throws IOException{
String src = "d://synth.pcm";
FileInputStream fis = new FileInputStream(src);
FileOutputStream fos = new FileOutputStream("D://synth.wav");
//计算长度
int PCMSize = 0;
byte[] buf = new byte[1024 * 4];
int size = fis.read(buf);
while (size != -1) {
PCMSize += size;
size = fis.read(buf);
}
fis.close();
//填入参数,比特率等等。这里用的是16位单声道 8000 hz
WaveHeader header = new WaveHeader(100);
//长度字段 = 内容的大小(PCMSize) + 头部字段的大小(不包括前面4字节的标识符RIFF以及fileLength本身的4字节)
header.fileLength = PCMSize + (44 - 8);
header.fmtHdrLeth = 16;
header.bitsPerSample = 16;
header.channels = 1;
header.formatTag = 0x0001;
header.avgBytesPerSec = 8000;
header.blockAlign = (short)(header.channels * header.bitsPerSample / 8);
header.avgBytesPerSec = header.blockAlign * header.avgBytesPerSec;
header.dataHdrLeth = PCMSize;
byte[] h = header.getHeader();
assert h.length == 44; //WAV标准,头部应该是44字节
//write header
fos.write(h, 0, h.length);
//write data stream
fis = new FileInputStream(src);
size = fis.read(buf);
while (size != -1) {
fos.write(buf, 0, size);
size = fis.read(buf);
}
fis.close();
fos.close();
System.out.println("Convert OK!");
}
public static void main(String[] args) {
try {
testPcmWav();
} catch (IOException e) {
e.printStackTrace();
}
}
}
所需WaveHeader类代码如下:
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class WaveHeader {
public char fileID[] = { 'R', 'I', 'F', 'F' };
public int fileLength;
public char wavTag[] = { 'W', 'A', 'V', 'E' };
public char fmtHdrID[] = { 'f', 'm', 't', ' ' };
public int fmtHdrLeth = 16;
public short formatTag = 1;
public short channels = 1;
public short sampleRate = 16000;
public short bitsPerSample = 16;
public short blockAlign = (short)(channels * bitsPerSample / 8);
public int avgBytesPerSec = blockAlign * sampleRate;
private char dataHdrID[] = { 'd', 'a', 't', 'a' };
public int dataHdrLeth;
public WaveHeader (int fileLength){
this.fileLength = fileLength + (44 - 8);
dataHdrLeth = fileLength;
}
public WaveHeader (int fileLength, short channels, short sampleRate, short bitsPerSample){
this.fileLength = fileLength + (44 - 8);
dataHdrLeth = fileLength;
this.channels = channels;
this.sampleRate = sampleRate;
this.bitsPerSample = bitsPerSample;
blockAlign = (short)(channels * bitsPerSample / 8);
avgBytesPerSec = blockAlign * sampleRate;
}
public byte[] getHeader() throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
WriteChar(bos, fileID);
WriteInt(bos, fileLength);
WriteChar(bos, wavTag);
WriteChar(bos, fmtHdrID);
WriteInt(bos, fmtHdrLeth);
WriteShort(bos, formatTag);
WriteShort(bos, channels);
WriteInt(bos, sampleRate);
WriteInt(bos, avgBytesPerSec);
WriteShort(bos, blockAlign);
WriteShort(bos, bitsPerSample);
WriteChar(bos, dataHdrID);
WriteInt(bos, dataHdrLeth);
bos.flush();
byte[] r = bos.toByteArray();
bos.close();
return r;
}
private void WriteShort(ByteArrayOutputStream bos, int s)
throws IOException {
byte[] mybyte = new byte[2];
mybyte[1] = (byte) ((s << 16) >> 24);
mybyte[0] = (byte) ((s << 24) >> 24);
bos.write(mybyte);
}
private void WriteInt(ByteArrayOutputStream bos, int n) throws IOException {
byte[] buf = new byte[4];
buf[3] = (byte) (n >> 24);
buf[2] = (byte) ((n << 8) >> 24);
buf[1] = (byte) ((n << 16) >> 24);
buf[0] = (byte) ((n << 24) >> 24);
bos.write(buf);
}
private void WriteChar(ByteArrayOutputStream bos, char[] id) {
for (int i = 0; i < id.length; i++) {
char c = id[i];
bos.write(c);
}
}
}