我用java做反相声音。(反相是反射波.x坐标没有改变,但y坐标是颠倒的。)
在反射声波之前,我必须从声音中获取字节数组(或int数组)。
我从笔记本电脑的麦克风听到声音。
这是我的 CODE (我有原始代码,在网络中将声音录制为文件。我修改了一点)
public class NoiseController extends Thread{
private TargetDataLine line;
private AudioInputStream audioInputStream;
public NoiseController(TargetDataLine line) {
this.line = line;
this.audioInputStream = new AudioInputStream(line);
}
public void start() {
line.start();
super.start();
}
public void stopRecording() {
line.stop();
line.close();
}
public void run() {
try {
int packet;
while((packet = audioInputStream.read()) != -1)
System.out.println(packet);
}
catch(IOException ioe) {
ioe.getStackTrace();
}
}
public static void main(String[] args) {
AudioFormat audioFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100.0F, 16, 2, 4, 44100.0F, false);
DataLine.Info info = new DataLine.Info(TargetDataLine.class, audioFormat);
TargetDataLine targetDataLine = null;
try {
targetDataLine = (TargetDataLine)AudioSystem.getLine(info);
targetDataLine.open(audioFormat);
}
catch(LineUnavailableException lue) {
out("unable to get a recording line");
lue.printStackTrace();
System.exit(-1);
}
AudioFileFormat.Type targetType = AudioFileFormat.Type.WAVE;
NoiseController recorder = new NoiseController(targetDataLine);
System.out.println(targetDataLine);
System.out.println(targetType);
out("Press ENTER to start the recording.");
try {
System.in.read();
}
catch(IOException ioe) {
ioe.printStackTrace();
}
recorder.start();
out("Recording...");
out("Press ENTER to stop the recording.");
try {
System.in.read();
System.in.read();
}
catch(IOException ioe) {
ioe.getStackTrace();
}
recorder.stopRecording();
out("Recording stopped.");
}
private static void out(String msg) {
System.out.println(msg);
}
}
但是,录制时控制台不会打印任何内容... 它只显示
com.sun.media.sound.DirectAudioDevice$DirectTDL@25154f_
WAVE
Press ENTER to start the recording.
Recording...
Press ENTER to stop the recording.
Recording stopped.
如果我像run()
AudioSystem.write(stream, fileType, out);
而不是
int packet;
while((packet = audioInputStream.read()) != -1)
System.out.println(packet);
程序保存wav文件。
我的课程有什么问题?
答案 0 :(得分:0)
你没有像Uwe Allner所说的那样打印Exception。
我也尝试纠正它,我认为结果必须是这样的:
public class NoiseController extends Thread {
private final TargetDataLine line;
private final AudioInputStream audioInputStream;
public NoiseController(final TargetDataLine line) {
this.line = line;
this.audioInputStream = new AudioInputStream(line);
}
@Override
public void start() {
line.start();
super.start();
}
public void stopRecording() {
line.stop();
line.close();
try {
audioInputStream.close();
} catch (final IOException e) {
e.printStackTrace();
}
}
@Override
public void run() {
try {
final int bufferSize = 1024;
int read = 0;
final byte[] frame = new byte[bufferSize];
while ((read = audioInputStream.read(frame)) != -1 && line.isOpen()) {
// only the first read bytes are valid
System.out.println(Arrays.toString(frame));
}
} catch (final IOException ioe) {
ioe.printStackTrace();
}
}
public static void main(final String[] args) {
final AudioFormat audioFormat = new AudioFormat(AudioFormat.Encoding.PCM_SIGNED, 44100.0F, 16, 2, 4, 44100.0F, false);
final DataLine.Info info = new DataLine.Info(TargetDataLine.class, audioFormat);
TargetDataLine targetDataLine = null;
try {
targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
targetDataLine.open(audioFormat);
} catch (final LineUnavailableException lue) {
out("unable to get a recording line");
lue.printStackTrace();
System.exit(-1);
}
final AudioFileFormat.Type targetType = AudioFileFormat.Type.WAVE;
final NoiseController recorder = new NoiseController(targetDataLine);
System.out.println(targetDataLine);
System.out.println(targetType);
out("Press ENTER to start the recording.");
try {
System.in.read();
} catch (final IOException ioe) {
ioe.printStackTrace();
}
recorder.start();
out("Recording...");
out("Press ENTER to stop the recording.");
try {
System.in.read();
System.in.read();
} catch (final IOException ioe) {
ioe.printStackTrace();
}
recorder.stopRecording();
out("Recording stopped.");
}
private static void out(final String msg) {
System.out.println(msg);
}
}