java pcm重采样
时间: 2023-07-31 08:04:59 浏览: 50
Java中可以使用javax.sound.sampled库来进行PCM重采样。下面是一个简单的示例代码:
```java
import javax.sound.sampled.*;
import java.io.*;
public class PCMResampler {
public static void main(String[] args) throws Exception {
// 读取原始PCM数据
AudioInputStream originalStream = AudioSystem.getAudioInputStream(new File("original.pcm"));
AudioFormat originalFormat = originalStream.getFormat();
byte[] originalData = originalStream.readAllBytes();
originalStream.close();
// 配置重采样参数
AudioFormat targetFormat = new AudioFormat(44100, 16, 1, true, false);
AudioInputStream targetStream = AudioSystem.getAudioInputStream(targetFormat, new AudioInputStream(new ByteArrayInputStream(originalData), originalFormat, originalData.length / originalFormat.getFrameSize()));
// 写入重采样后的PCM数据
FileOutputStream outputStream = new FileOutputStream(new File("resampled.pcm"));
byte[] buffer = new byte[4096];
int bytesRead;
while ((bytesRead = targetStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
}
targetStream.close();
outputStream.close();
}
}
```
这段代码将读取一个原始的PCM文件,然后使用AudioFormat来指定目标采样率、位深度、声道数和字节序等参数。之后使用AudioSystem.getAudioInputStream方法创建一个新的AudioInputStream对象,该对象会对原始数据进行重采样,最终输出到一个文件中。