用java写一个音频的卷积滤波混响算法
时间: 2023-05-28 20:06:58 浏览: 52
这是一个基于Java的音频卷积滤波混响算法的示例:
```java
import javax.sound.sampled.*;
import java.io.*;
public class ConvolutionReverb {
private byte[] impulseResponse;
private AudioInputStream audioInputStream;
private AudioFormat audioFormat;
public ConvolutionReverb(String impulseResponseFile, AudioInputStream audioInputStream) {
try {
this.impulseResponse = loadAudioFile(impulseResponseFile);
this.audioInputStream = audioInputStream;
this.audioFormat = audioInputStream.getFormat();
} catch (IOException | UnsupportedAudioFileException e) {
e.printStackTrace();
}
}
public void process() {
byte[] audioBytes = loadAudioBytes(audioInputStream);
byte[] outputBytes = new byte[audioBytes.length + impulseResponse.length - 1];
for (int i = 0; i < audioBytes.length; i++) {
for (int j = 0; j < impulseResponse.length; j++) {
if (i - j >= 0) {
outputBytes[i] += (audioBytes[i - j] * impulseResponse[j]);
}
}
}
AudioInputStream outputAudioInputStream = new AudioInputStream(new ByteArrayInputStream(outputBytes), audioFormat, outputBytes.length);
try {
AudioSystem.write(outputAudioInputStream, AudioFileFormat.Type.WAVE, new File("output.wav"));
} catch (IOException e) {
e.printStackTrace();
}
}
private byte[] loadAudioFile(String fileName) throws IOException, UnsupportedAudioFileException {
File file = new File(fileName);
AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(file);
return loadAudioBytes(audioInputStream);
}
private byte[] loadAudioBytes(AudioInputStream audioInputStream) {
byte[] audioBytes = new byte[(int) (audioInputStream.getFrameLength() * audioInputStream.getFormat().getFrameSize())];
try {
audioInputStream.read(audioBytes);
} catch (IOException e) {
e.printStackTrace();
}
return audioBytes;
}
}
```
这个类的构造函数需要传入一个混响脉冲响应音频文件的路径和一个音频输入流。然后,`process()`方法将对输入音频流进行卷积滤波,使用混响脉冲响应对音频进行处理后,将输出保存到一个名为“output.wav”的文件中。
使用示例:
```java
import javax.sound.sampled.*;
import java.io.*;
public class Main {
public static void main(String[] args) {
try {
AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File("input.wav"));
ConvolutionReverb convolutionReverb = new ConvolutionReverb("impulse-response.wav", audioInputStream);
convolutionReverb.process();
} catch (IOException | UnsupportedAudioFileException e) {
e.printStackTrace();
}
}
}
```
这个示例将读取一个名为“input.wav”的音频文件,并将其与名为“impulse-response.wav”的混响脉冲响应音频文件进行卷积滤波。输出将保存到名为“output.wav”的文件中。