Java语音服务器不工作

我正在尝试制作语音服务器，服务器正在抛出此错误“javax.sound.sampled.LineUnavailableException：行格式为PCM_SIGNED 8000.0 Hz，8位，单声道，1字节/帧，不支持。” 。 这是我的代码， 提前谢谢你

public class VoiceUser extends Thread { // CHAT USER private ObjectOutputStream clientOutput; public VoiceUser(Socket sv) { try { System.out.println("VSTART"); clientOutput = new ObjectOutputStream(sv.getOutputStream()); outputArray.add(clientOutput); } catch (IOException e) { System.out.println("Can't create stable connection between server and client"); } } public void run() { try { AudioFormat af = new AudioFormat(8000.0f,8,1,true,false); DataLine.Info info = new DataLine.Info(TargetDataLine.class, af); TargetDataLine microphone = (TargetDataLine)AudioSystem.getLine(info); microphone.open(af); microphone.start(); int bytesRead = 0; byte[] soundData = new byte[1]; while(bytesRead != -1) { bytesRead = microphone.read(soundData, 0, soundData.length); System.out.println(soundData.length); if(bytesRead >= 0) { for(ObjectOutputStream o : outputArray) { o.write(soundData, 0, bytesRead); } } } } catch (IOException | LineUnavailableException e) { e.printStackTrace(); } } }